Transcript
FEATURES
PIN CONNECTION DIAGRAM OUT A 1 TOP VIEW (Not to Scale)
V+
7
OUT B
6
–IN B
5
+IN B
The ADA4177-2 and ADA4177-4 operate over the −40°C to +125°C industrial temperature range. The ADA4177-1 and the ADA4177-2 are available in an 8-lead SOIC package and an 8-lead MSOP package. The ADA4177-4 is available in a 14-lead TSSOP and a 14-lead SOIC package. 12 10 8 VSY = ±15V
6 4 2 0 –2 –4 –6
–10 –50
–30
–10
10
30
VIN (V)
50
12282-446
–8
GENERAL DESCRIPTION
Figure 2. Overvoltage Current Limiting, Voltage Follower Configuration
Table 1. Evolution of Protected Input Op Amps by Generation1 Gen. 1, OVP (10 V) OP191 OP291 OP491
1
Rev. C
+IN A 3
8
Applications for this amplifier include sensor signal conditioning (such as thermocouples, RTDs, and strain gages), process control front-end amplifiers, and precision diode power measurement in optical and wireless transmission systems.
Wireless base station control circuits Optical network control circuits Instrumentation Sensors and controls Thermocouples, resistor thermal detectors (RTDs), strain gages, shunt current measurements Precision filters
The inputs of the ADA4177-1, ADA4177-2, and ADA4177-4 set a new standard in precision amplifier robustness, providing input protection against signal excursions 32 V beyond either supply, as well as 70 dB of rejection for electromagnetic interference (EMI) at 1000 MHz.
ADA4177-2
Figure 1. ADA4177-2
APPLICATIONS
The ADA4177-1 single channel, ADA4177-2 dual channel, and ADA4177-4 quad channel amplifiers feature low offset voltage (2 µV typical) and drift (1 µV/°C maximum), low input bias current, low noise, and low current consumption (500 µA typical). Outputs are stable with capacitive loads of more than 1000 pF with no external compensation.
–IN A 2
V– 4
INPUT BIAS CURRENT (mA)
Low offset voltage: 60 µV maximum at 25°C (8-lead and 14-lead SOIC) Low offset voltage drift: 1 µV/°C maximum (8-lead and 14-lead SOIC) Low input bias current: 1 nA maximum at 25°C Low voltage noise density: 8 nV/√Hz typical at 1 kHz Large signal voltage gain (AVO): 100 dB minimum over full supply voltage and operating temperature Input overvoltage protection to 32 V above and below the supply voltage rail Integrated EMI filter 70 dB typical rejection at 1000 MHz 90 dB typical rejection at 2400 MHz Rail-to-rail output swing Low supply current: 500 µA typical per amplifier Wide bandwidth Gain bandwidth product (AV = +100): 3.5 MHz typical Unity-gain crossover (AV = +1): 3.5 MHz typical −3 dB bandwidth (AV = +1): 6 MHz typical Dual-supply operation Specified at ±5 V to ±15 V, operates over ±2.5 V to ±18 V Unity-gain stable No phase reversal
12282-001
Data Sheet
OVP and EMI Protected, Precision, Low Noise and Bias Current Op Amps ADA4177-1/ADA4177-2/ADA4177-4
Gen. 2, OVP (25 V) ADA4091-2 ADA4091-4 ADA4092-4
Gen. 3, OVP (32 V) ADA4096-2 ADA4096-4
Gen. 4 EMI Filters AD8657 AD8659 AD8546 AD8548 ADA4661-2 ADA4666-2
Gen. 5, OVP (32 V) + EMI ADA4177-1 ADA4177-2 ADA4177-4
Gen. stands for Generation.
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ADA4177-1/ADA4177-2/ADA4177-4
Data Sheet
TABLE OF CONTENTS Features .............................................................................................. 1
Theory of Operation ...................................................................... 24
Applications ....................................................................................... 1
Applications Information .............................................................. 25
General Description ......................................................................... 1
Active Overvoltage Protection ................................................. 25
Pin Connection Diagram ................................................................ 1
Limiting Overvoltage Current Out of the Positive Supply Pin .. 26
Revision History ............................................................................... 2
EMI Protection ........................................................................... 27
Specifications..................................................................................... 3
Self Heating ................................................................................. 27
Electrical Characteristics, ±5 V .................................................. 3 Electrical Characteristics, ±15 V ................................................ 5
Using the ADA4177-1/ADA4177-2/ADA4177-4 as a Comparator ................................................................................. 27
Absolute Maximum Ratings ....................................................... 7
Output Phase Reversal ............................................................... 28
Maximum Power Dissipation ..................................................... 7
Proper Printed Circuit Board (PCB) Layout .......................... 28
Thermal Resistance ...................................................................... 7
Outline Dimensions ....................................................................... 29
ESD Caution .................................................................................. 7
Ordering Guide .......................................................................... 31
Pin Configurations and Function Descriptions ........................... 8 Typical Performance Characteristics ........................................... 11
REVISION HISTORY 4/15—Rev. B to Rev. C Added ADA4177-1 ............................................................. Universal Deleted Figure 2; Renumbered Sequentially................................. 1 Change to Table 1 ............................................................................. 1 Added Figure 5, Figure 6, and Table 7; Renumbered Sequentially ....................................................................................... 9 Changes to Figure 16, Figure 17, Figure 19, and Figure 20 ...... 12 Changes to Figure 26 ...................................................................... 14 Changes to Figure 34, Figure 35, Figure 37, and Figure 39 ...... 16 Changes to Figure 46, Figure 47, Figure 49, and Figure 50 ...... 17 Changes to Figure 59 and Figure 62............................................. 19 Changes to Figure 63, Figure 65, Figure 66, and Figure 68 ...... 20 Changes to Figure 69 and Figure 72............................................. 21 Changes to Figure 75 and Figure 78............................................. 22 Added Figure 77 and Figure 80 .................................................... 22 Added Figure 81 to Figure 83 ....................................................... 23 Changes to Theory of Operation Section .................................... 24 Changes to Input Protection Circuit Section and Limiting Overvoltage Current Out of the Positive Supply Pin Section ... 26 Changes to Using the ADA4177-1/ADA4177-2/ADA4177-4 as a Comparator Section .................................................................... 27 Changes to Ordering Guide .......................................................... 31 1/15—Rev. A to Rev. B Added ADA4177-4 ............................................................. Universal Reorganized Layout ............................................................ Universal
Added Figure 2; Renumbered Sequentially ...................................1 Changes to Features and General Description Section ................1 Changes to Table 2.............................................................................3 Changes to Table 3.............................................................................5 Changes to Table 5.............................................................................7 Added Figure 6, Figure 7, and Table 7; Renumbered Sequentially ................................................................................................ 9 Added Figure 10 and Figure 13 ............................................................. 10 Replaced Figure 15 and Figure 18......................................................... 11 Added Figure 14, Figure 16, Figure 17,and Figure 19....................... 11 Changes to Figure 20, Figure 21, Figure 23, and Figure 24.............. 12 Changes to Figure 32 and Figure 33 ..................................................... 14 Changes to Figure 38 and Figure 41 ..................................................... 15 Changes to Figure 58 and Figure 61 ..................................................... 18 Changes to Figure 62, Figure 65, and Figure 66................................. 19 Changes to Figure 69 and Figure 72 ..................................................... 20 Change to Figure 87 Caption ........................................................ 25 Updated Outline Dimensions ....................................................... 27 Added Figure 93 and Figure 94 .................................................... 28 Changes to Ordering Guide .......................................................... 29 10/14—Rev. 0 to Rev. A Changes to Large Signal Voltage Gain Parameter, Test Conditions/Comments Column, Table 3 .......................................5 10/14—Revision 0: Initial Version
Rev. C | Page 2 of 31
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4
SPECIFICATIONS ELECTRICAL CHARACTERISTICS, ±5 V VSY = ±5.0 V, VCM = 0 V, TA = 25°C, unless otherwise noted. Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage 8-Lead SOIC and 14-Lead SOIC
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
2
60 120 120 200 150 300
µV µV µV µV µV µV
40 110
µV µV
1 1.6 +1 +2 +0.75 +1.5 +3.5
1 1 4 100
µV/°C µV/°C nA nA nA nA V mA mA dB dB dB dB dB dB pF pF MΩ GΩ
25
V V V V V V V V mA
36 48 0.11
mA mA Ω
VOS −40°C < TA < +125°C
8-Lead MSOP
3 −40°C < TA < +125°C
14-Lead TSSOP
3 −40°C < TA < +125°C
Offset Voltage Matching 8-Lead SOIC 8-Lead MSOP Offset Voltage Drift 8-Lead SOIC and 14-Lead SOIC 8-Lead MSOP and 14-Lead TSSOP Input Bias Current
ΔVOS/ΔT
−40°C < TA < +125°C
IB −40°C < TA < +125°C
Input Offset Current
IOS −40°C < TA < +125°C
Input Voltage Range Overvoltage Current Limit1
IVR IOVP
Common-Mode Rejection Ratio
CMRR
Large Signal Voltage Gain
AVO
Input Capacitance Input Resistance OUTPUT CHARACTERISTICS Output Voltage High
Low
Output Current Short-Circuit Current Sourcing Sinking Closed-Loop Output Impedance
CINDM CINCM RDIFF RCM
VOH
VOL
IOUT ISC
ZOUT
5 V < VCM < 37 V −37 V < VCM < −5 V VCM = −3.5 V to +3.5 V −40°C < TA < +125°C RL = 2 kΩ, VOUT = −4.5 V to +4.5 V −40°C < TA < +125°C RL = 10 kΩ, VOUT = −4.5 V to +4.5 V −40°C < TA < +125°C Differential mode Common mode Differential mode Common mode
ILOAD = 1 mA −40°C < TA < +125°C ILOAD = 7 mA −40°C < TA < +125°C ILOAD = 1 mA −40°C < TA < +125°C ILOAD = 7 mA −40°C < TA < +125°C VDROPOUT < 1 V TA = 25°C
f = 1 kHz, AV = +1
Rev. C | Page 3 of 31
−1 −2 −0.75 −1.5 −3.5
122 120 108 100 115 110
−0.4 0.1
12 10 130 110 120
4.95 4.90 4.80 4.75 −4.95 −4.90 −4.80 −4.75
ADA4177-1/ADA4177-2/ADA4177-4 Parameter POWER SUPPLY Power Supply Rejection Ratio Supply Current per Amplifier DYNAMIC PERFORMANCE Slew Rate Settling Time To 0.1% To 0.01% Gain Bandwidth Product Unity-Gain Crossover −3 dB Closed-Loop Bandwidth Total Harmonic Distortion Plus Noise EMI Rejection of +IN x f = 1000 MHz f = 2400 MHz NOISE PERFORMANCE Voltage Noise Voltage Noise Density Current Noise Density 1
Data Sheet
Symbol
Test Conditions/Comments
Min
Typ
PSRR
VS = ±2.5 V to ±18 V −40°C < TA < +125°C VOUT = 0 V −40°C < TA < +125°C
125 120
145
ISY
SR tS
GBP UGC f−3 dB THD + N EMIRR
en p-p en in
500
Max
Unit
560 600
dB dB µA µA
RL = 2 kΩ
1.5
V/µs
VIN = 1 V step, RL = 2 kΩ, AV = −1 VIN = 1 V step, RL = 2 kΩ, AV = −1 VIN = 10 mV p-p, RL = 2 kΩ, AV = +100 VIN = 10 mV p-p, RL = 2 kΩ, AV = +1 VIN = 10 mV p-p, RL = 2 kΩ, AV = +1 VIN = 1 V rms, RL = 2 kΩ, AV = +1, f = 1 kHz VIN = 200 mV p-p
1.8 3.5 3.5 3.5 6 0.003
µs µs MHz MHz MHz %
70 90
dB dB
175 10 8 0.2
nV p-p nV/√Hz nV/√Hz pA/√Hz
0.1 Hz to 10 Hz f = 10 Hz f = 1 kHz f = 1 kHz
All inputs are stressed to 32 V beyond supplies for 500 ms. See Figure 71 for the typical input bias current vs. the input voltage over the overvoltage protected input range.
Rev. C | Page 4 of 31
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4
ELECTRICAL CHARACTERISTICS, ±15 V VSY = ±15 V, VCM = 0 V, TA = 25°C, unless otherwise noted. Table 3. Parameter INPUT CHARACTERISTICS Offset Voltage 8-Lead SOIC and 14-Lead SOIC
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
2
60 120 120 200 150 300
µV µV µV µV µV µV
40 110
µV µV
1 1.6 +1 +2 +0.75 +1.5 +13.5
1 1 4 130
µV/°C µV/°C nA nA nA nA V mA mA dB dB dB dB dB dB pF pF MΩ GΩ
25
V V V V V V V V mA
53 65 0.08
mA mA Ω
VOS −40°C < TA < +125°C
8-Lead MSOP
3 −40°C < TA < +125°C
14-Lead TSSOP
3 −40°C < TA < +125°C
Offset Voltage Matching 8-Lead SOIC 8-Lead MSOP Offset Voltage Drift 8-Lead SOIC and 14-Lead SOIC 8-Lead MSOP and 14-Lead TSSOP Input Bias Current
ΔVOS/ΔT
−40°C < TA < +125°C
IB −40°C < TA < +125°C
Input Offset Current
IOS −40°C < TA < +125°C
Input Voltage Range Overvoltage Current Limit1
IVR IOVP
Common-Mode Rejection Ratio
CMRR
Large Signal Voltage Gain
AVO
Input Capacitance Input Resistance OUTPUT CHARACTERISTICS Output Voltage High
Low
Output Current Short-Circuit Current Sourcing Sinking Closed-Loop Output Impedance
CINDM CINCM RDIFF RCM
VOH
VOL
IOUT ISC
ZOUT
15 V < VCM < 47 V −47 V < VCM < −15 V VCM = −13.5 V to +13.5 V −40°C < TA < +125°C RL = 2 kΩ, VOUT = −14.2 V to +14.2 V −40°C < TA < +125°C RL = 10 kΩ, VOUT = −14.5 V to +14.5 V −40°C < TA < +125°C Differential mode Common mode Differential mode Common mode
ILOAD = 1 mA −40°C < TA < +125°C ILOAD = 7 mA −40°C < TA < +125°C ILOAD = 1 mA −40°C < TA < +125°C ILOAD = 7 mA −40°C < TA < +125°C VDROPOUT < 1 V TA = 25°C
f = 1 kHz, AV = +1
Rev. C | Page 5 of 31
−1 −2 −0.75 −1.5 −13.5
128 125 110 103 118 110
−0.3 0.1
12 10 130 114 120
14.95 14.90 14.80 14.75 −14.95 −14.90 −14.80 −14.75
ADA4177-1/ADA4177-2/ADA4177-4 Parameter POWER SUPPLY Power Supply Rejection Ratio Supply Current per Amplifier DYNAMIC PERFORMANCE Slew Rate Settling Time To 0.1% To 0.01% Gain Bandwidth Product Unity-Gain Crossover −3 dB Closed-Loop Bandwidth Total Harmonic Distortion Plus Noise EMI Rejection of +IN x f = 1000 MHz f = 2400 MHz NOISE PERFORMANCE Voltage Noise Voltage Noise Density Current Noise Density MULTIPLE AMPLIFIERS CHANNEL SEPARATION 1
Data Sheet
Symbol
Test Conditions/Comments
Min
Typ
PSRR
VS = ±2.5 V to ±18 V −40°C < TA < +125°C VOUT = 0 V −40°C < TA < +125°C
125 120
145
ISY
SR tS
GBP UGC f−3 dB THD + N EMIRR
en p-p en in CS
500
Max
Unit
580 620
dB dB µA µA
RL = 2 kΩ
1.5
V/µs
VIN = 10 V p-p, RL = 2 kΩ, AV = −1 VIN = 10 V p-p, RL = 2 kΩ, AV = −1 VIN = 10 mV p-p, RL = 2 kΩ, AV = +100 VIN = 10 mV p-p, RL = 2 kΩ, AV = +1 VIN = 10 mV p-p, RL = 2 kΩ, AV = +1 VIN = 1 V rms, AV = +1, RL = 2 kΩ, f = 1 kHz VIN = 200 mV p-p
5.5 7.5 3.5 3.5 6 0.002
µs µs MHz MHz MHz %
70 90
dB dB
175 10 8 0.2 127
nV p-p nV/√Hz nV/√Hz pA/√Hz dB
0.1 Hz to 10 Hz f = 10 Hz f = 1 kHz f = 1 kHz f = 1 kHz
All inputs are stressed to 32 V beyond supplies for 500 ms. See Figure 74 for the typical input bias current vs. the input voltage over the overvoltage protected input range.
Rev. C | Page 6 of 31
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4
ABSOLUTE MAXIMUM RATINGS Table 4. Parameter Supply Voltage Input Voltage Differential Input Voltage Output Short-Circuit Duration to GND Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature, Soldering (10 sec)1 ESD Human Body Model (HBM)2 Field Induced Charged Device Model (FICDM)3 Machine Model (MM)
Rating 36 V VSY ± 32 V ±VSY See the Maximum Power Dissipation section −65°C to +150°C −40°C to +125°C −65°C to +150°C 300°C 4 kV 1250 V 200 V
The power dissipated in the package (PD) is the sum of the quiescent power dissipation and the power dissipated by the output stage transistor. It is calculated as follows: PD = (VSY × ISY) + (VSY − VOUT) × ILOAD where: VSY is the power supply rail. ISY is the quiescent current. VOUT is the output of the amplifier. ILOAD is the output load. Do not exceed the 150°C maximum junction temperature for the device. Exceeding the junction temperature limit can cause degradation in the parametric performance or even destroy the device. Refer to Technical Article MS-2251, Data Sheet Intricacies— Absolute Maximum Ratings and Thermal Resistances, for more information.
THERMAL RESISTANCE
1
IPC/JEDEC J-STS-020D applicable standard. ESDA/JEDEC JS-001-2011 applicable standard. 3 JESD22-C101 (ESD FICDM standard of JEDEC) applicable standard. 2
Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability.
MAXIMUM POWER DISSIPATION The ADA4177-1, ADA4177-2, and ADA4177-4 can drive a short-circuit output current of up to 65 mA. However, the usable output load current drive is limited by the maximum power dissipation allowed by the device package. The absolute maximum junction temperature is 150°C (see Table 4). The junction temperature can be estimated as follows:
Thermal resistance between junction and ambient (θJA) is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. Table 5. Thermal Resistance Package Type 8-Lead MSOP 8-Lead SOIC 14-Lead TSSOP 14-Lead SOIC
ESD CAUTION
TJ = PD × θJA + TA where: TJ is the die junction temperature. PD is the power dissipated in the package. θJA is the thermal resistance of the package. TA is the ambient temperature.
Rev. C | Page 7 of 31
θJA 190 158 240 115
θJC 44 43 43 36
Unit °C/W °C/W °C/W °C/W
ADA4177-1/ADA4177-2/ADA4177-4
Data Sheet
NIC 1
NIC
NIC 1
8
NIC
ADA4177-1
7
V+
–IN 2
ADA4177-1
7
V+
+IN 3
TOP VIEW (Not to Scale)
6
OUT
+IN 3
6
OUT
5
NIC
TOP VIEW (Not to Scale)
V– 4
5
NIC
V– 4
NOTES 1. NIC = NOT INTERNALLY CONNECTED.
12282-205
8
–IN 2
NOTES 1. NIC = NOT INTERNALLY CONNECTED.
Figure 3. 8-Lead MSOP Pin Configuration, ADA4177-1
Figure 4. 8-Lead SOIC Pin Configuration, ADA4177-1
Table 6. ADA4177-1 Pin Function Descriptions Pin No. 1, 5, 8 2 3 4 6 7
Mnemonic NIC −IN +IN V− OUT V+
12282-105
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Description Not Internally Connected. Inverting Input Channel. Noninverting Input Channel. Negative Supply Voltage. Output Channel. Positive Supply Voltage.
Rev. C | Page 8 of 31
ADA4177-1/ADA4177-2/ADA4177-4
OUT A 1
8
V+
–IN A 2
ADA4177-2
7
OUT B
–IN A 2
ADA4177-2
+IN A 3
TOP VIEW (Not to Scale)
6
–IN B
+IN A 3
5
+IN B
TOP VIEW (Not to Scale)
12282-004
V– 4
OUT A 1
V– 4
Table 7. ADA4177-2 Pin Function Descriptions Mnemonic OUT A −IN A +IN A V− +IN B −IN B OUT B V+
V+
7
OUT B
6
–IN B
5
+IN B
Figure 6. 8-Lead SOIC Pin Configuration, ADA4177-2
Figure 5. 8-Lead MSOP Pin Configuration, ADA4177-2
Pin No. 1 2 3 4 5 6 7 8
8
12282-005
Data Sheet
Description Output Channel A. Inverting Input Channel A. Noninverting Input Channel A. Negative Supply Voltage. Noninverting Input Channel B. Inverting Input Channel B. Output Channel B. Positive Supply Voltage.
Rev. C | Page 9 of 31
Data Sheet
OUT A
1
14
OUT D
OUT A 1
14
OUT D
–IN A
2
13
–IN D
–IN A 2
13
–IN D
ADA4177-4
12
+IN D
TOP VIEW (Not to Scale)
11
V–
10
+IN C
3
ADA4177-4
V+
4
TOP VIEW (Not to Scale)
+IN B
+IN A
12
+IN A 3
+IN D
V+ 4 11
V–
5
10
+IN C
–IN B 6
9
–IN C
–IN B
6
9
–IN C
OUT B 7
8
OUT C
OUT B
7
8
OUT C
12282-206
+IN B 5
Figure 8. 14-Lead SOIC Pin Configuration, ADA4177-4
Figure 7. 14-Lead TSSOP Pin Configuration, ADA4177-4
Table 8. ADA4177-4 Pin Function Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Mnemonic OUT A −IN A +IN A V+ +IN B −IN B OUT B OUT C −IN C +IN C V− +IN D −IN D OUT D
12282-207
ADA4177-1/ADA4177-2/ADA4177-4
Description Output Channel A. Inverting Input Channel A. Noninverting Input Channel A. Positive Supply Voltage. Noninverting Input Channel B. Inverting Input Channel B. Output Channel B. Output Channel C. Inverting Input Channel C. Noninverting Input Channel C. Negative Supply Voltage. Noninverting Input Channel D. Inverting Input Channel D. Output Channel D.
Rev. C | Page 10 of 31
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4
TYPICAL PERFORMANCE CHARACTERISTICS Ambient temperature (TA) = 25°C unless otherwise noted. 80
80
NUMBER OF AMPLIFIERS
60 50 40 30 20
60 50 40 30
0
VOS (µV)
Figure 9. Input Offset Voltage (VOS) Distribution, VSY = ±5 V, 8-Lead SOIC
Figure 12. Input Offset Voltage (VOS) Distribution, VSY = ±15 V, 8-Lead SOIC
60
60 VSY = ±15V MSOP
VSY = ±5V MSOP 50
30
20
40
30
20
0
0
VOS (µV)
12282-400
10
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90 100
10
VOS (µV)
Figure 10. Input Offset Voltage (VOS) Distribution, VSY = ±5 V, 8-Lead MSOP
12282-401
40
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90 100
NUMBER OF AMPLIFIERS
50
Figure 13. Input Offset Voltage (VOS) Distribution, VSY = ±15 V, 8-Lead MSOP
300
300 VSY = ±15V SOIC
VSY = ±5V SOIC 250
200
150
100
200
150
100
0
0
VOS (µV)
12282-503
50
–50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50
50
Figure 11. Input Offset Voltage (VOS) Distribution, VSY = ±5 V, 14-Lead SOIC
VOS (µV)
Figure 14. Input Offset Voltage (VOS) Distribution, VSY = ±15 V, 14-Lead SOIC
Rev. C | Page 11 of 31
12282-504
NUMBER OF AMPLIFIERS
250
–50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50
NUMBER OF AMPLIFIERS
12282-403
0
12282-402
10
–50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50
20
VOS (µV)
NUMBER OF AMPLIFIERS
VSY = ±15V SOIC
70
10
–50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50
NUMBER OF AMPLIFIERS
70
90 VSY = ±5V SOIC
ADA4177-1/ADA4177-2/ADA4177-4
Data Sheet 80
60 50 40 30
50 40 30
10
0
0 12282-501
10
VOS (µV)
160
VSY = ±5V 8-LEAD SOIC, 14-LEAD SOIC
120 80
40
40 VOS (µV)
80
0
0
–40
–40
–80
–80
–120
–120
–25
–10
5
20
35
50
65
80
95
110
125
TEMPERATURE (°C)
–160 –40
12282-508
–160 –40
300
200
100
100 VOS (µV)
200
0
–200
–200
5
20
35
50
65
80
95
110
125
TEMPERATURE (°C)
12282-512
–100
–10
5
20
35
50
65
80
95
110
125
Figure 17. Input Offset Voltage (VOS) vs. Temperature, VSY = ±5 V, 8-Lead MSOP and 14-Lead TSSOP
VSY = ±15V 8-LEAD MSOP, 14-LEAD TSSOP
0
–100
–25
–10
Figure 19. Input Offset Voltage (VOS) vs. Temperature, VSY = ±15 V, 8-Lead SOIC and 14-Lead SOIC
VSY = ±5V 8-LEAD MSOP, 14-LEAD TSSOP
–300 –40
–25
TEMPERATURE (°C)
Figure 16. Input Offset Voltage (VOS) vs. Temperature, VSY = ±5 V, 8-Lead SOIC and 14-Lead SOIC 300
VSY = ±15V 8-LEAD SOIC, 14-LEAD SOIC
12282-511
120
Figure 18. Input Offset Voltage (VOS) Distribution, VSY = ±15 V, 14-Lead TSSOP
–300 –40
–25
–10
5
20
35
50
65
80
95
110
125
TEMPERATURE (°C)
Figure 20. Input Offset Voltage (VOS) vs. Temperature, VSY = ±15 V, 8-Lead MSOP and 14-Lead TSSOP
Rev. C | Page 12 of 31
12282-515
160
VOS (µV)
60
20
Figure 15. Input Offset Voltage (VOS) Distribution, VSY = ±5 V, 14-Lead TSSOP
VOS (µV)
70
20
VOS (µV)
VSY = ±15V TSSOP
12282-502
NUMBER OF AMPLIFIERS
70
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90 100
NUMBER OF AMPLIFIERS
80
90 VSY = ±5V TSSOP
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90 100
90
Data Sheet
80
VSY = ±5V 8-LEAD SOIC, 14-LEAD SOIC
70
70
60
60
NUMBER OF AMPLIFIERS
50 40 30 20
50 40 30 20 10
–0.30
–0.05
0.20
0.45
0.70
0.95
TCVOS (µV/°C)
0 –0.55
12282-513
0 –0.55
Figure 21. Temperature Coefficient of Offset Voltage (TCVOS), VSY = ±5 V, 8-Lead SOIC and 14-Lead SOIC
35
0.45
0.70
0.95
VSY = ±15V 8-LEAD MSOP, 14-LEAD TSSOP
30 NUMBER OF AMPLIFIERS
25 20 15 10
25 20 15 10 5
5
–0.30
–0.05
0.20
0.45
0.70
0.95
TCVOS (µV/°C)
Figure 22. Temperature Coefficient of Offset Voltage (TCVOS), VSY = ±5 V, 8-Lead MSOP and 14-Lead TSSOP 100
0 –0.55
12282-514
0 –0.55
100 80
60
60
VOS (µV)
AVERAGE 0 –20 AVERAGE – 3σ
–20
VCM (V)
1
2
3
4
5
–100 –15
12282-407
0
AVERAGE – 3σ
–40
–80
–1
AVERAGE + 3σ AVERAGE
–60
–2
0.95
0
–80
–3
0.70
20
–60
–4
0.45
VSY = ±15V
40
AVERAGE + 3σ
20
0.20
Figure 25. Temperature Coefficient of Offset Voltage (TCVOS), VSY = ±15 V, 8-Lead MSOP and 14-Lead TSSOP
VSY = ±5V
–40
–0.05
TCVOS (µV/°C)
80
40
–0.30
12282-517
NUMBER OF AMPLIFIERS
0.20
Figure 24. Temperature Coefficient of Offset Voltage (TCVOS), VSY = ±15 V, 8-Lead SOIC and 14-Lead SOIC
VSY = ±5V 8-LEAD MSOP, 14-LEAD TSSOP
30
VOS (µV)
–0.05
TCVOS (µV/°C)
35
–100 –5
–0.30
12282-516
10
40
VSY = ±15V 8-LEAD SOIC, 14-LEAD SOIC
Figure 23. Input Offset Voltage (VOS) vs. Common-Mode Voltage (VCM), VSY = ±5 V
–10
–5
0 VCM (V)
5
10
15
12282-408
NUMBER OF AMPLIFIERS
80
ADA4177-1/ADA4177-2/ADA4177-4
Figure 26. Input Offset Voltage (VOS) vs. Common-Mode Voltage (VCM), VS = ±15 V
Rev. C | Page 13 of 31
ADA4177-1/ADA4177-2/ADA4177-4
Data Sheet
5.00
15.00 VOL AT ILOAD = 1mA VOH AT ILOAD = 1mA
4.96 4.94
VOL AT ILOAD = 7mA
4.92
VOL AT ILOAD = 1mA
14.98
OUTPUT VOLTAGE SWING (V)
4.90 4.88 4.86 VOH AT ILOAD = 7mA 4.84 4.82
VOH AT ILOAD = 1mA
14.96 14.94
VOL AT ILOAD = 7mA
14.92 14.90 14.88 14.86
VOH AT ILOAD = 7mA 14.84 14.82
VSY = ±5V –25
0
25
50
75
100
125
TEMPERATURE (°C)
VSY = ±15V 14.80 –50 –25
12282-409
4.80 –50
25
0
75
50
100
12282-410
OUTPUT VOLTAGE SWING (V)
4.98
125
TEMPERATURE (°C)
Figure 27. Output Voltage Swing vs. Temperature, VSY = ±5 V
Figure 30. Output Voltage Swing vs. Temperature, VSY = ±15 V
300
450 VSY = ±5V
VSY = ±15V 400 NUMBER OF AMPLIFIERS
NUMBER OF AMPLIFIERS
250
200
150
100
350 300 250 200 150 100
50
12282-412
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
INPUT BIAS CURRENT (nA)
Figure 31. Input Bias Current Distribution, VSY = ±15 V
Figure 28. Input Bias Current Distribution, VSY = ±5 V 0.2
0.2
VSY = ±15V VCM = 0V
VSY = ±5V VCM = 0V
INPUT BIAS CURRENT (nA)
0
IB – I B+
–0.1 –0.2 –0.3
IB – 0 –0.1 –0.2 –0.3
0
25
50
75
100
125
TEMPERATURE (°C)
12282-413
–25
–0.5 –50
–25
0
25
50
75
100
125
TEMPERATURE (°C)
Figure 32. Input Bias Current (IB) vs. Temperature, VSY = ±15 V
Figure 29. Input Bias Current (IB) vs. Temperature, VSY = ±5 V
Rev. C | Page 14 of 31
12282-414
–0.4
–0.4 –0.5 –50
I B+
0.1
0.1
INPUT BIAS CURRENT (nA)
–0.8
12282-411
INPUT BIAS CURRENT (nA)
–1.0
0
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
0
–1.0
50
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4 10
0.6
0.2 –40°C +25°C +85°C +125°C
0 0
10
5
15
20
25
30
34
40
VSY (V)
0
OUTPUT DROPOUT VOLTAGE (mV)
10
1 0.001
–40°C +25°C +85°C +125°C 0.01
0.1
1
10
100
SINK CURRENT (mA)
OUTPUT DROPOUT VOLTAGE (mV)
10 –40°C +25°C +85°C +125°C 1
10
100
SOURCE CURRENT (mA)
12282-423
OUTPUT DROPOUT VOLTAGE (mV)
100
0.1
30
35
1k
100
10
10k
1k
0.01
25
–40°C +25°C +85°C +125°C 0.01
0.1
1
10
100
Figure 37. Output Dropout Voltage vs. Sink Current, VSY = ±15 V
VSY = ±5V
1 0.001
20
SINK CURRENT (mA)
Figure 34. Output Dropout Voltage vs. Sink Current, VSY = ±5 V 10k
15
VSY = ±15V
1 0.001
12282-421
OUTPUT DROPOUT VOLTAGE (mV)
10k
100
10
Figure 36. Offset Voltage (VOS) vs. Power Supply Voltage (VSY)
VSY = ±5V
1k
5
VSY (V)
Figure 33. Supply Current per Amplifier (ISY) vs. Power Supply Voltage (VSY) 10k
–5
–10
12282-406
0.1
0
12282-422
0.3
5
Figure 35. Output Dropout Voltage vs. Source Current, VSY = ±5 V
VSY = ±15V
1k
100
10 –40°C +25°C +85°C +125°C 1 0.001
0.01
0.1
1
10
100
SOURCE CURRENT (mA)
Figure 38. Output Dropout Voltage vs. Source Current, VSY = ±15 V
Rev. C | Page 15 of 31
12282-424
ISY (mA)
0.4
12282-419
OFFSET VOLTAGE (µV)
0.5
ADA4177-1/ADA4177-2/ADA4177-4 100
80
80
60
60
40
40
20
20 0
0
–60 –80 1k
60
40
40
20
20
–20 –40
–40
GAIN WITH CL = 0pF GAIN WITH CL = 100pF GAIN WITH CL = 200pF
–60
–60
10k
100k
1M
–80 100M
10M
FREQUENCY (Hz)
–20
–80 1k
–60
10k
–40
100k
1M
G = +10 20
G = +1
–20
G = +100
G = +10 20
G = +1
0
–20
10k
100k
1M
–40 1k
12282-427
–40 1k
10M
FREQUENCY (Hz)
10k
100k
1M
Figure 43. Closed-Loop Gain vs. Frequency, VSY = ±15 V
146
146 VSY = ±5V
VSY = ±15V 144
142
142
140
140
CMRR (dB)
144
138 136
138 136
134
134
132
132
–25
0
25
50
TEMPERATURE (°C)
75
100
125
130 –50
12282-429
130 –50
10M
FREQUENCY (Hz)
Figure 40. Closed-Loop Gain vs. Frequency, VSY = ±5 V
CMRR (dB)
–80 100M
10M
VSY = ±15V
40 CLOSED-LOOP GAIN (dB)
CLOSED-LOOP GAIN (dB)
GAIN WITH CL = 0pF GAIN WITH CL = 100pF GAIN WITH CL = 200pF
60
G = +100
0
–20
Figure 42. Open-Loop Gain and Phase vs. Frequency, VSY = ±15 V
VSY = ±5V
40
PHASE WITH CL = 0pF PHASE WITH CL = 100pF PHASE WITH CL = 200pF
FREQUENCY (Hz)
Figure 39. Open-Loop Gain and Phase vs. Frequency, VSY = ±5 V 60
0
0
PHASE WITH CL = 0pF PHASE WITH CL = 100pF PHASE WITH CL = 200pF
12282-428
–40
60
Figure 41. Common-Mode Rejection Ratio (CMRR) vs. Temperature, VSY = ±5 V
–25
0
25
50
TEMPERATURE (°C)
75
100
125
12282-430
–20
120 VSY = ±15V AV = –10 100 RL = 2kΩ TA = 25°C 80
PHASE (Degrees)
100
12282-425
OPEN-LOOP GAIN (dB)
80
120
12282-426
100
120
OPEN-LOOP GAIN (dB)
VSY = ±5V AV = –10 RL = 2kΩ TA = 25°C
PHASE (Degrees)
120
Data Sheet
Figure 44. Common-Mode Rejection Ratio (CMRR) vs. Temperature, VSY = ±15 V
Rev. C | Page 16 of 31
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4
1000
1000 VSY = ±5V
VSY = ±15V
100
100 AV = +100
AV = +10
AV = +1
0.1
0.1
0.01
0.01
0.001 0.0001
0.001
0.01
0.1
1
10
FREQUENCY (MHz)
0.001 0.0001
0.001
0.01
0.1
1
10
FREQUENCY (MHz)
Figure 45. Output Impedance (ZOUT) vs. Frequency, VSY = ±5 V
Figure 48. Output Impedance (ZOUT) vs. Frequency, VSY = ±15 V
3
12.5
VSY = ±5V VIN = 4V p-p AV = +1 RL = 2kΩ CL = 300pF
2
VSY = ±15V VIN = 20V p-p AV = +1 RL = 2kΩ CL = 300pF
10.0 7.5 5.0 VOUT (2.5V/DIV)
1 VOUT (1V/DIV)
AV = +1
1
12282-432
ZOUT (Ω)
AV = +10 1
AV = +100
10
12282-431
ZOUT (Ω)
10
0
–1
2.5 0 –2.5 –5.0 –7.5
–2
TIME (100µs/DIV)
–12.5 TIME (100µs/DIV)
Figure 46. Large Signal Transient Response, VSY = ±5 V
Figure 49. Large Signal Transient Response, VSY = ±15 V
0.10
0.10
VSY = ±5V VIN = 100mV p-p AV = +1 RL = 2kΩ CL = 1000pF
VSY = ±15V VIN = 100mV p-p AV = +1 RL = 2kΩ CL = 1000pF
0.05
VOUT (V)
0.05
0
–0.05
0
–0.10 TIME (100µs/DIV)
12282-435
–0.05
–0.10 TIME (100µs/DIV)
Figure 47. Small Signal Transient Response, VSY = ±5 V
Figure 50. Small Signal Transient Response, VSY = ±15 V
Rev. C | Page 17 of 31
12282-436
VOUT (V)
12282-434
12282-433
–10.0
–3
ADA4177-1/ADA4177-2/ADA4177-4 0.8 0.6 4 3
0.10
2
0.05 INPUT
1
0
12 10
0.2 8
INPUT 0
6 –0.2 4
–0.4
2
–0.6
OUTPUT
OUTPUT
0
0
12282-437
–0.8 –1
–0.10 TIME (10µs/DIV)
–1.0
–2 TIME (10µs/DIV)
Figure 51. Positive Overload Recovery, VSY = ±5 V 0.8
2 VSY = ±15V VIN = 225mV AV = –100 RL = 10kΩ CL = 35pF
0.6
0.10
–2
0.05
–3 INPUT
0
–4
–0.05
–5
INPUT VOLTAGE (V)
–1
0
OUTPUT
–2
0.5
–4
0.4
–6
0.3
–8
0.2
–10 –12
0.1
0
5
10
15
20
INPUT
–14
0
–6 25
12282-439
–0.10 –5
TIME (5µs/DIV)
OUTPUT VOLTAGE (V)
0.7
0
OUTPUT
0.15
–0.1 –5
10
5
0
15
20
–16 25
TIME (5µs/DIV)
Figure 52. Negative Overload Recovery, VSY = ±5 V
Figure 55. Negative Overload Recovery, VSY = ±15 V
145
140
VSY = ±5V VSY = ±15V
VSY = ±5V TO ±15V
120 140
CMRR (dB)
100
135
80 60 40
130
125 –50
–25
0
25
50
75
100
125
TEMPERATURE (°C)
0 0.1
1
10
100
1k
10k
FREQUENCY (kHz)
Figure 56. Common-Mode Rejection Ratio (CMRR) vs. Frequency, VSY = ±5 V and VSY = ±15 V
Figure 53. Power Supply Rejection Ratio (PSRR) vs. Temperature, VSY = ±5 V to ±15 V
Rev. C | Page 18 of 31
12282-455
20
12282-420
PSRR (dB)
INPUT VOLTAGE (V)
0.20
1
VSY = ±5V VIN = 75mV AV = –100 RL = 10kΩ CL = 35pF
OUTPUT VOLTAGE (V)
0.25
Figure 54. Positive Overload Recovery, VSY = ±15 V
12282-440
–0.05
14
0.4
INPUT VOLTAGE (V)
0.15
VSY = ±15V VIN = 225mV AV = –100 RL = 10kΩ CL = 35pF
5 OUTPUT VOLTAGE (V)
0.20
16
1.0
OUTPUT VOLTAGE (V)
VSY = ±5V VIN = 75mV AV = –100 RL = 10kΩ CL = 35pF
12282-438
6
0.25
INPUT VOLTAGE (V)
Data Sheet
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4
120
120
VSY = ±5V
100
VSY = ±15V
100 PSRR–
PSRR– 80
PSRR (dB)
PSRR+ 40
60 PSRR+ 40
20
20
0
0
1
10
100
1k
10k
FREQUENCY (kHz)
–20 0.1
12282-456
–20 0.1
100
50
40
VSY = ±15V AV = +1 RL = 2kΩ VIN = 100mV p-p OS–
OVERSHOOT (%)
OS+
20
30 OS+
20
10
10
0.1
1
10
LOAD CAPACITANCE (nF)
0 0.01
12282-458
0 0.01
Figure 58. Small Signal Overshoot vs. Load Capacitance, VSY = ±5 V 1.0
5
0.015
0.003
0
0.010
0.002
–5
0.001 OUTPUT
–1.5
0
–2.0
–0.001
–2.5
0.4
0.8
1.2
1.6
2.0
2.4
2.8
TIME (µs)
INPUT (V)
–1.0
0
0.020
0.004
0.005 OUTPUT
–10
0
–15
–0.005
–20
–0.002
–25
–0.003 3.2
–30
12282-548
INPUT (V)
10
OUTPUT (V)
VSY = ±5V VIN = 1V p-p RL = 2kΩ
–0.4
10
INPUT
0 –0.5
1
Figure 61. Small Signal Overshoot vs. Load Capacitance, VSY = ±15 V
0.005 INPUT
0.5
0.1
LOAD CAPACITANCE (nF)
Figure 59. Positive Settling Time to 0.1%, VSY = ±5 V
–0.010 VSY = ±15V VIN = 10V p-p RL = 2kΩ
–0.020 –2
–1
0
1
2
3
4
5
6
7
TIME (µs)
Figure 62. Positive Settling Time to 0.1%, VSY = ±15 V
Rev. C | Page 19 of 31
–0.015
8
12282-551
OVERSHOOT (%)
OS–
–3.0 –0.8
10k
Figure 60. Power Supply Rejection Ratio (PSRR) vs. Frequency, VSY = ±15 V
VSY = ±5V AV = +1 RL = 2kΩ VIN = 100mV p-p
30
1k
12282-459
40
10
FREQUENCY (kHz)
Figure 57. Power Supply Rejection Ratio (PSRR) vs. Frequency, VSY = ±5 V 50
1
12282-457
60
OUTPUT (V)
PSRR (dB)
80
ADA4177-1/ADA4177-2/ADA4177-4
0.020 INPUT
5
0.015
0
0.003
0
0.010
–0.5
0.002
–5
0.001 OUTPUT
0
–2.0
–0.4
0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
0
–15
–0.005
–0.002
–25
–0.003 3.2
–30
12282-552
–0.010
TIME (µs)
VSY = ±15V VIN = 10V p-p RL = 2kΩ
–0.020 –2
–1
2
3
4
5
6
7
8
TIME (µs)
VSY = ±5V VSY = ±15V VOLTAGE NOISE CORNER (nV/√Hz)
VSY = ±15V VSY = ±5V
AV = +1
100
10
1 100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 64. Voltage Noise Density vs. Frequency, VSY = ±5 V and VSY = ±15 V
16
12
8
4
0
12282-468
VOLTAGE NOISE DENSITY (nV/√Hz)
1
20
1k
80kHz >500kHz
1.0
1.5
2.0
2.5
3.0
VSY = ±15V RL = 2kΩ VIN = 1V rms
80kHz >500kHz
0.1
THD + N (%)
0.01
0.001
0.01
0.001
0.0001
0.1
1
10
FREQUENCY (kHz)
100
12282-470
0.0001
0.00001 0.01
0.5
Figure 67. Voltage Noise Corner vs. Frequency, VSY = ±5 V and VSY = ±15 V 1
VSY = ±5V RL = 2kΩ VIN = 1V rms
0
FREQUENCY (Hz)
0.1
THD + N (%)
0
Figure 66. Negative Settling Time 0.1%, VSY = ±15 V
Figure 63. Negative Settling Time to 0.1%, VSY = ±5 V
1
–0.015
12282-483
–3.0 –0.8
–10
–20
–0.001
–2.5
0.005 OUTPUT
0.00001 0.01
0.1
1
10
FREQUENCY (kHz)
Figure 68. THD + N vs. Frequency, VSY = ±15 V
Figure 65. THD + N vs. Frequency, VSY = ±5 V
Rev. C | Page 20 of 31
100
12282-471
–1.5
INPUT (V)
–1.0
OUTPUT (V)
0.004
0.5
INPUT (V)
10
0.005
OUTPUT (V)
VSY = ±5V VIN = 1V p-p RL = 2kΩ
INPUT
12282-555
1.0
Data Sheet
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4
1
1
VSY = ±5V RL = 2kΩ fIN = 1kHz
0.1
THD + N (%)
0.1
0.01
0.01
0.01
0.1
1
10
AMPLITUDE (V rms)
0.0001 0.001
12282-472
0.0001 0.001
0.1
1
10
AMPLITUDE (V rms)
Figure 69. THD + N vs. Amplitude, VSY = ±5 V
Figure 72. THD + N vs. Amplitude, VSY = ±15 V
VSY = ±5V
TIME (1s/DIV)
Figure 70. 0.1 Hz to 10 Hz Noise, VSY = ±5 V
Figure 73. 0.1 Hz to 10 Hz Noise, VSY = ±15 V
15.0 12.5
12282-465
12282-464
INPUT VOLTAGE (50nV/DIV)
INPUT VOLTAGE (50nV/DIV)
VSY = ±15V
TIME (1s/DIV)
12.5 VSY = ±5V
VSY = ±15V 10.0
10.0
INPUT BIAS CURRENT (mA)
7.5
7.5 5.0 2.5 0 –2.5 –5.0 –7.5
5.0 2.5 0 –2.5 –5.0 –7.5
–10.0
–10.0
–12.5
–12.5
–15.0 –40 –35 –30 –25 –20 –15 –10 –5
0
5
10 15 20 25 30 35 40
VIN (V)
12282-466
INPUT BIAS CURRENT (mA)
0.01
12282-473
0.001
0.001
Figure 71. Input Bias Current vs. Input Voltage (VIN) Including Input Overvoltage Range (Beyond VSY = ±5 V )
–15.0 –50
–40
–30
–20
–10
0
10
20
30
40
50
VIN (V)
Figure 74. Input Bias Current vs. Input Voltage (VIN) Including Input Overvoltage Range (Beyond VSY = ±15 V)
Rev. C | Page 21 of 31
12282-467
THD + N (%)
VSY = ±15V RL = 2kΩ fIN = 1kHz
ADA4177-1/ADA4177-2/ADA4177-4
Data Sheet
1000
3000
600
+125°C +85°C +25°C –40°C
2000 INPUT BIAS CURRENT (pA)
800 INPUT BIAS CURRENT (pA)
VSY = ±15V
VSY = ±5V +125°C +85°C +25°C –40°C
400 200 0 –200 –400 –600
1000
0
–1000
–1000
–5
–4
–3
–2
–1
0
1
2
3
4
–2000 –15
12282-480
–1000 5
COMMON-MODE VOLTAGE (V)
–90
5
10
15
VSY = ±15V VIN = 10V p-p AV = +1000 RL = 2kΩ
CHANNEL SEPARATION (dB)
–100
1
–110
–120
–130
0.01
0.1
1
10
100
FREQUENCY (kHz)
–150 0.01
0.1
1
10
100
FREQUENCY (kHz)
Figure 76. Current Noise Density vs. Frequency, VSY = ±5 V and VSY = ±15 V
12282-474
–140
12282-475
Figure 79. Channel Separation vs. Frequency, VSY = ±15 V
45
60 VSY = ±5V
VSY = ±15V 55 SOURCING CURRENT (mA)
40
35
30
25
45
40
35
–25
0
25
50
TEMPERATURE (°C)
75
100
125
30 –50
12282-600
20 –50
50
Figure 77. Output Short-Circuit Sourcing Current vs. Temperature, VSY = ±5 V
–25
0
25
50
TEMPERATURE (°C)
75
100
125
12282-601
CURRENT NOISE DENSITY (pA/√Hz)
0
Figure 78. Input Bias Current vs. Common-Mode Voltage (VCM) and Temperature, VSY = ±15 V
VSY = ±15V VSY = ±5V
0.1 0.001
SOURCING CURRENT (mA)
–5
COMMON-MODE VOLTAGE (V)
Figure 75. Input Bias Current vs. Common-Mode Voltage (VCM) and Temperature, VSY = ±5 V 10
–10
12282-481
–800
Figure 80. Output Short-Circuit Sourcing Current vs. Temperature, VSY = ±15 V
Rev. C | Page 22 of 31
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4 –30
–20
VSY = ±15V
VSY = ±5V
–40 SINKING CURRENT (mA)
–30
–35
–40
–60
–70
–45
–25
0
25
50
75
100
125
TEMPERATURE (°C)
–80 –50
12282-602
–50 –50
Figure 81. Output Short-Circuit Sinking Current vs. Temperature, VSY = ±5 V
1
0
–1
50
100
150
200
250
300
TIME (Seconds)
350
12282-604
–2
0
0
25
50
75
100
125
Figure 83. Output Short-Circuit Sinking Current vs. Temperature, VSY = ±15 V
2
–3
–25
TEMPERATURE (°C)
3
CHANGE IN VOS (µV)
–50
12282-603
SINKING CURRENT (mA)
–25
Figure 82. Offset Voltage Short-Term Drift
Rev. C | Page 23 of 31
ADA4177-1/ADA4177-2/ADA4177-4
Data Sheet
Rev. C | Page 24 of 31
OVP
OVP
gm
12282-449
N BIAS
The ADA4177-1, ADA4177-2, and ADA4177-4 are precision, bipolar op amps that integrate both input overvoltage protection (OVP) and input EMI filtering while maintaining a low 2 nA maximum bias current and a rail-to-rail output operation. Figure 84 shows a conceptual schematic of the main amplifier that uses super beta, bipolar input transistors and bias current cancellation to minimize the input bias current. The inputs are cascoded to protect the super beta input devices from damage during overvoltage conditions. The cascoded inputs feed into an active load that makes up the primary gain stage. A buffered transconductance (gm) stage converts a differential voltage to a differential current to drive the output stage. The rail-to-rail output can swing to 50 mV maximum (for example, the guaranteed room temperature limit for VOH is 14.95 V when the positive supply is 15 V) with a 1 mA load at 25°C.
P BIAS
THEORY OF OPERATION
Figure 84. Conceptual Schematic
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4
APPLICATIONS INFORMATION ACTIVE OVERVOLTAGE PROTECTION
Add External Clamping Diodes
The ADA4177-1/ADA4177-2/ADA4177-4 use active overvoltage protection to protect the device from damage when the inputs are driven to a voltage up to 32 V above the positive supply voltage or 32 V below the negative supply voltage. The ADA4177-1/ADA4177-2/ADA4177-4 not only protect the input from damage, but they also reduce the input noise.
Precision op amps have a low offset voltage (VOS) and a high common-mode rejection ratio (CMRR). Both of these characteristics simplify system calibration and minimize dynamic error. To maintain these specifications in the presence of electrostatic discharge (ESD) events, bipolar op amps often have internal clamp diodes and small limiting resistors in series with their inputs; however, these do not address fault conditions where the inputs exceed the rails. In these cases, the system designer commonly adds clamping diodes (D1 and D2) along with a series resistor (ROVP), as shown in Figure 86.
When an op amp does not have input overvoltage protection, moving the input voltage above or below the supply voltage can cause excessive input current, which can damage the op amp. To avoid this, add a series resistor at the input. To protect the op amp from a 30 V transient beyond either rail, limit the input current to 5 mA, and add a 6 kΩ series resistor to the input. However, a trade-off of adding the series resister is that it adds thermal noise. The 6 kΩ series resistor exhibits 10 nV/√Hz of thermal noise, which adds quadrature thermal noise from the resistor with the op amp noise. NTOTAL =
N OP AMP 2 + N RESISTOR 2
where: NOP AMP is the op amp noise. NRESISTOR is the thermal noise generated by the resistor. When the additional thermal noise from the series resistor is added to the thermal noise (8 nV/√Hz) of the ADA4177-1/ ADA4177-2/ADA4177-4, the 6 kΩ series resistor brings the total thermal noise to 12 nV/√Hz, which is a 70% increase in thermal noise. Figure 85 shows how noise from the additional source resistance adds to the total noise at the amplifier input; the higher the source resistance, the higher the total noise. Because the ADA4177-1/ADA4177-2/ADA4177-4 have integrated input protection for overvoltage conditions, the noise trade-off is avoided.
RF
D2
ROVP VIN
VOUT
D1
V–
Figure 86. Common Scheme for Protecting Precision Amplifier Inputs from Overvoltage Conditions
If the signal source at VIN is driven to one diode voltage beyond the op amp supplies, the fault current is limited by ROVP. Schottky diodes have a low forward knee voltage of 200 mV less than a typical small signal diode. Therefore, all overvoltage currents are shunted through the external diodes (D1 and D2). The reverse leakage current for a typical Schottky diode is extremely variable with the reverse voltage level. Therefore, as the noninverting input of the op amp swings, the D1 and D2 leakage currents do not match, and the differences pass through ROVP, creating a voltage drop. The voltage drop on ROVP appears as a variation in VOS, which can drastically reduce the CMRR performance. Because the ADA4177-1/ADA4177-2/ADA4177-4 have integrated input protection during overvoltage conditions, the degradation in performance is avoided.
Input Protection Circuit
18
TOTAL NOISE
The ADA4177-1/ADA4177-2/ADA4177-4 inputs provide overvoltage protection without the trade-offs encountered in the common design methods. The conceptual schematic of the input is shown in Figure 87.
16 14 RESISTOR NOISE
12
V+
10 8 ADA4177-2/ADA4177-4 NOISE
J1B
J2B
J1A
J2A
6 4
0 0
5000
10000
15000
20000
25000
30000
TOTAL SOURCE RESISTANCE
VIN2
V–
Figure 87. Conceptual Schematic of the Inputs of the ADA4177-1/ADA4177-2/ADA4177-4
Figure 85. Equivalent Thermal Noise vs. Total Source Resistance
Rev. C | Page 25 of 31
12282-442
VIN1
2 12282-445
EQUIVALENT THERMAL NOISE (nV/√Hz)
20
V+
12282-441
Common Protection Methods Add an External Series Input Resistor
ADA4177-1/ADA4177-2/ADA4177-4
Data Sheet
J1A, J1B, J2A, and J2B are depletion mode junction field effect transistors (JFETs) that replace the series resistance in the conventional protection scheme. Under normal operation, the input bias current of the ADA4177-1/ADA4177-2/ADA4177-4 flows through the J1A and J2A transistors without pinching off the channel. To achieve excellent noise performance, J1A and J2A must have a low on resistance (RDSON) of approximately 300 Ω. When either input exceeds the rail by more than a diode, large currents flow through either J1A or J2A, which causes the channels to pinch off and effectively raises their resistance. Figure 88 shows the positive overvoltage and negative overvoltage characteristics as the FET channel pinches.
LIMITING OVERVOLTAGE CURRENT OUT OF THE POSITIVE SUPPLY PIN Because the positive power supply of the system may be incapable of sinking the large overvoltage current of 8 mA (see Figure 88), care was taken to divide down this current into the positive rail during an overvoltage event. As shown in Figure 90, Q1L is a lateral PNP transistor that serves two purposes. First, the emitter base acts as a clamping diode to route the overvoltage current away from the V+ pin and to the V− pin. Second, it divides down this current via the beta of Q1L. At an emitter current of 8 mA, the beta of Q1L is approximately 8, which reduces the current injected into the positive supply by a factor of 8.
12
V+
10
J1B
Q1L
VSY = ±15V
6 4
+IN
J1A
2 0
Figure 90. Overvoltage Protection Circuitry
–2 –4 –6
–10 –50
–30
–10
10
30
50
VIN (V)
12282-500
–8
Figure 91 shows the positive and negative supply currents when the input voltage exceeds the supply voltages (and overvoltage condition). The current at the V+ terminal does not reverse direction during an overvoltage event because the current is directed to V− via the collector of Q1L. 8
Figure 88. Input Bias Current During Positive and Negative Overvoltage, VSY = ±15 V, Voltage Follower Configuration
300Ω AT 2V
6 4
SUPPLY CURRENT (mA)
Figure 89 shows how the JFET effective resistance increases exponentially as shown by the measurements at 2 V, 20 V, and 40 V overvoltage. Note that as the overvoltage increases from 2 V to 40 V, the resistance increases from 300 Ω to 3.5 kΩ (a factor of 11). 10
V–
12282-443
INPUT BIAS CURRENT (mA)
8
POSITIVE SUPPLY CURRENT
2 0 –2 –4 –6 –8 NEGATIVE SUPPLY CURRENT
3.5kΩ AT 40V
–12 –40
6
–30
–20
–10
0
10
INPUT DIFFERENTIAL (V)
20
30
40
12282-452
–10
2.2kΩ AT 20V
4
Figure 91. Supply Current vs. Input Differential, Circuit Configured at Unity Gain with V+ = +15 V and V− = −15 V
2
If negative overvoltage transients are expected, ensure that the negative voltage source driving V− can handle sourcing current without forcing current into the device and causing the supply voltage to change.
0
–2 2.5
7.5
12.5
17.5
22.5
27.5
32.5
37.5
42.5
VIN (V)
12282-454
OVERVOLTAGE (mV)
8
Figure 89. Overvoltage vs. Input Voltage (VIN), Voltage Follower Configuration
Rev. C | Page 26 of 31
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4
100 mV EMIRR = 20 × log ΔVOS
where: 100 mV is generally the peak-to-peak input used for the test. ΔVOS is the change in the op amp offset as a result of the input signal. Figure 92 shows the input EMI protection of the ADA4177-1/ ADA4177-2/ADA4177-4.
100
INPUT +IN VSY = ±15V RF POWER = –16dBm (50mV p-p)
WITH ONE INPUT IN OVERVOLTAGE 120 100 80 60 40
WITH TWO INPUTS IN OVERVOLTAGE
20 0 0
5
10
15
20
25
30
35
40
CONTINUOUS OVERVOLTAGE (V)
Figure 93. Maximum Operating Temperature vs. Continuous Overvoltage for One Input and Two Inputs (θJA = 150°C/W)
USING THE ADA4177-1/ADA4177-2/ADA4177-4 AS A COMPARATOR The ADA4177-1, ADA4177-2, and ADA4177-4 can be used as a comparator as long as relatively small input impedance can be tolerated. That is, the input differential pair is diode clamped but the overvoltage protection circuitry limits the differential. Figure 94 shows the input current vs. the input differential voltage with ±15 V supplies.
80
60
40
8 6
20
1000
Figure 92. EMI Rejection Ratio Peak Voltage vs. Frequency
SELF HEATING During an overvoltage condition, the ADA4177-1/ADA4177-2/ ADA4177-4 dissipate heat according to the thermal resistance (θJA) of the package it is in, which, in turn, heats up the die. Ensure that the specified operating junction temperature does not exceed 150°C for device protection. Extended overtemperature exposure can cause some operating specifications to shift outside of their guaranteed limits. As shown in Figure 88, the ADA4177-1/ADA4177-2/ADA4177-4 inputs sink by approximately 8 mA at 15 V overvoltage. In that condition, the ADA4177-1/ADA4177-2/ADA4177-4 dissipate 120 mW of power. If the package has a θJA of 100°C/W, the junction temperature rises by approximately 12°C over the ambient temperature of the package and junction. In such a case, derate the ambient operating temperature by 12°C (125°C minus 12°C) for an absolute maximum operating temperature of 113°C. When the junction temperature exceeds the absolute maximum junction temperature of 125°C, add an additional series
2 0 –2 –4 –6 –8 –20
–15
–10
–5
0
5
10
15
20
INPUT DIFFERENTIAL (V)
12282-451
100 FREQUENCY (MHz)
INPUT CURRENT (mA)
4
0 10
12282-453
EMI REJECTION RATIO PEAK VOLTAGE (dB)
120
140
12282-447
The ADA4177-1/ADA4177-2/ADA4177-4 inputs are also protected from high frequency EMI. In an op amp with no EMI protection, signals not within the bandwidth of the op amp couple into sensitive amplifier inputs and become rectified as they travel through the amplifier, eventually appearing as ac feedthrough on top of a dc offset. When an input filter is not provided, these offsets can be quite large. These offsets are referred to as the electromagnetic interference rejection ratio (EMIRR). The amplifier EMIRR is defined as
resistance to the inputs to further decrease the overvoltage current. Figure 93 shows the maximum operating temperature vs. the continuous overvoltage at θJA = 150°C/W. MAXIMUM OPERATING TEMPERATURE (°C)
EMI PROTECTION
Figure 94. Input Current vs. Input Differential with ±15 V Supplies
Figure 95 shows the input and output of a comparator circuit referenced to ground using the ADA4177-1, ADA4177-2, or ADA4177-4. The supply voltages are ±5 V. The −INx input is grounded and a positive input is stepped to ±1 V. Both the positive and negative recovery is approximately 4 µs.
Rev. C | Page 27 of 31
ADA4177-1/ADA4177-2/ADA4177-4
Data Sheet PROPER PRINTED CIRCUIT BOARD (PCB) LAYOUT The ADA4177-1, ADA4177-2, and ADA4177-4 are high precision devices. To ensure optimum performance at the PCB level, take care in the design of the board layout. To avoid leakage currents, maintain a clean and moisture free board surface. Coating the surface creates a barrier to moisture accumulation and reduces parasitic resistance on the board.
Figure 95. ADA4177-1/ADA4177-2/ADA4177-4 Used as a Comparator with ±5 V Supplies and a ±1 V Input Step, Voltage Follower Configuration
OUTPUT PHASE REVERSAL Phase reversal is defined as a change in polarity in the amplifier transfer function. Many op amps exhibit phase reversal when the voltage applied to the input is greater than the maximum common-mode voltage. In some instances, this phase reversal can cause permanent damage to the amplifier. In feedback loops, it can result in system lockups or equipment damage. The ADA4177-1, ADA4177-2, and ADA4177-4 are immune to phase reversal problems even at input voltages beyond the power supply settings.
Keeping supply traces short and properly bypassing the power supplies minimizes the power supply disturbances caused by the output current variation, such as when driving an ac signal into a heavy load. Connect bypass capacitors as closely as possible to the device supply pins. Stray capacitances are a concern at the outputs and the inputs of the amplifier. Keep the signal traces at least 5 mm from supply lines to minimize coupling. A variation in temperature across the PCB can cause a mismatch in the Seebeck voltages at solder joints and other points where dissimilar metals are in contact, resulting in thermal voltage errors. To minimize these thermocouple effects, orient resistors so that heat sources warm both ends equally. Ensure, where possible, that input signal paths contain matching numbers and types of components, to match the number and type of thermocouple junctions. For example, dummy components such as zero value resistors can be used to match real resistors in the opposite input path. Place matching components in close proximity to each other, and orient them in the same manner. Ensure that leads are of equal length so that thermal conduction is in equilibrium. Keep heat sources on the PCB as far away from amplifier input circuitry as is practical. The use of a ground plane is highly recommended. A ground plane reduces EMI noise and maintains a constant temperature across the circuit board.
Figure 96. Output Showing No Phase Reversal in Overvoltage Condition
Rev. C | Page 28 of 31
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4
OUTLINE DIMENSIONS 3.20 3.00 2.80
8
3.20 3.00 2.80
5.15 4.90 4.65
5
1
4
PIN 1 IDENTIFIER 0.65 BSC 0.95 0.85 0.75
15° MAX 1.10 MAX 0.80 0.55 0.40
0.23 0.09
6° 0°
0.40 0.25
10-07-2009-B
0.15 0.05 COPLANARITY 0.10
COMPLIANT TO JEDEC STANDARDS MO-187-AA
Figure 97. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters
5.00 (0.1968) 4.80 (0.1890)
1
5 4
1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 0.10 SEATING PLANE
6.20 (0.2441) 5.80 (0.2284)
1.75 (0.0688) 1.35 (0.0532)
0.51 (0.0201) 0.31 (0.0122)
0.50 (0.0196) 0.25 (0.0099)
45°
8° 0° 0.25 (0.0098) 0.17 (0.0067)
1.27 (0.0500) 0.40 (0.0157)
COMPLIANT TO JEDEC STANDARDS MS-012-AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
Figure 98. 8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches)
Rev. C | Page 29 of 31
012407-A
8
4.00 (0.1574) 3.80 (0.1497)
ADA4177-1/ADA4177-2/ADA4177-4
Data Sheet
5.10 5.00 4.90
14
8
4.50 4.40 4.30
6.40 BSC 1
7
PIN 1 0.65 BSC 1.20 MAX
0.15 0.05 COPLANARITY 0.10
0.20 0.09
0.30 0.19
0.75 0.60 0.45
8° 0°
SEATING PLANE
061908-A
1.05 1.00 0.80
COMPLIANT TO JEDEC STANDARDS MO-153-AB-1
Figure 99. 14-Lead Thin Shrink Small Outline Package [TSSOP] (RU-14) Dimensions shown in millimeters
8.75 (0.3445) 8.55 (0.3366) 8
14 1
7
1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0039) COPLANARITY 0.10
0.51 (0.0201) 0.31 (0.0122)
6.20 (0.2441) 5.80 (0.2283)
0.50 (0.0197) 0.25 (0.0098)
1.75 (0.0689) 1.35 (0.0531) SEATING PLANE
45°
8° 0° 0.25 (0.0098) 0.17 (0.0067)
1.27 (0.0500) 0.40 (0.0157)
COMPLIANT TO JEDEC STANDARDS MS-012-AB CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
Figure 100. 14-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-14) Dimensions shown in millimeters and (inches)
Rev. C | Page 30 of 31
060606-A
4.00 (0.1575) 3.80 (0.1496)
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4
ORDERING GUIDE Model1 ADA4177-1ARMZ ADA4177-1ARMZ-R7 ADA4177-1ARMZ-RL ADA4177-1ARZ ADA4177-1ARZ-R7 ADA4177-1ARZ-RL ADA4177-2ARMZ ADA4177-2ARMZ-R7 ADA4177-2ARMZ-RL ADA4177-2ARZ ADA4177-2ARZ-R7 ADA4177-2ARZ-RL ADA4177-4ARUZ ADA4177-4ARUZ-R7 ADA4177-4ARUZ-RL ADA4177-4ARZ ADA4177-4ARZ-R7 ADA4177-4ARZ-RL 1
Temperature Range −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C
Package Description 8-Lead Mini Small Outline Package [MSOP] 8-Lead Mini Small Outline Package [MSOP] 8-Lead Mini Small Outline Package [MSOP] 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Mini Small Outline Package [MSOP] 8-Lead Mini Small Outline Package [MSOP] 8-Lead Mini Small Outline Package [MSOP] 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Standard Small Outline Package [SOIC_N] 14-Lead Thin Shrink Small Outline Package [TSSOP] 14-Lead Thin Shrink Small Outline Package [TSSOP] 14-Lead Thin Shrink Small Outline Package [TSSOP] 14-Lead Standard Small Outline Package [SOIC_N] 14-Lead Standard Small Outline Package [SOIC_N] 14-Lead Standard Small Outline Package [SOIC_N]
Z = RoHS Compliant Part.
©2014–2015 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D12282-0-4/15(C)
Rev. C | Page 31 of 31
Package Option RM-8 RM-8 RM-8 R-8 R-8 R-8 RM-8 RM-8 RM-8 R-8 R-8 R-8 RU-14 RU-14 RU-14 R-14 R-14 R-14
Branding A3E A3E A3E
A36 A36 A36
