Transcript
Ordering number : ENA2033A
LA4537MC Monolithic Linear IC
Power Amplifier for 1.5V Headphone Stereos
http://onsemi.com
Features • Low current drain • 16Ω load drive capability • Excellent reduced voltage characteristics • Excellent power supply ripple rejection • Minimum number of external parts required (no input capacitor, feedback capacitor required) • Less harmonic interference in radio band • On-chip power switch function, muting function
Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Allowable power dissipation
Symbol VCC max
Conditions
Ratings
Quiescent
Pd max
Unit 4.5
V
290
mW
Operating temperature
Topr
−20 to +75
°C
Storage temperature
Tstg
−40 to +125
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Operating Conditions at Ta = 25°C Parameter
Symbol
Recommended supply voltage
VCC
Operating voltage range Recommended load resistance
Conditions
Ratings
Unit 1.5
V
VCC op
0.9 to 4.0
V
RL
16 to 32
Ω
Semiconductor Components Industries, LLC, 2013 May, 2013
12313NKPC CAV 20120301-S00005/32112SY No.A2033-1/8
LA4537MC Electrical Characteristics at Ta = 25°C, RL = 16Ω, Rg = 600Ω, See specified Test Circuit. Ratings Parameter
Symbol
Conditions
Unit min
Quiescent current
typ
max
ICCO1
VCC = 1.2V, quiescent
3.5
6.0
mA
ICCO2
VCC = 2.5V, pin 10 → GND
1.4
2.5
mA
ICCO3
VCC = 2.5V, pin 1 → GND
1.0
μA
31.5
dB
1.0
dB
1.5
%
Voltage gain
VG
VCC = 1.2V, f = 1kHz, VO = −20dBm
Voltage gain difference
ΔVG
VCC = 1.2V, f = 1kHz, VO = −20dBm
Total harmonic distortion
THD
VCC = 1.2V, f = 1kHz, PO = 0.5mW
Output power
PO
VCC = 1.5V, f = 1kHz, THD = 10%
5
8
mW
Crosstalk
CT
VCC = 1.2V, f = 100Hz, Rg = 1kΩ,
40
45
dB
SVRR
VO = −20dB VCC = 1.0V, f = 100Hz, Rg = 1kΩ,
40
46
dB
Ripple rejection
28.5
30.0
0.5
VR = −30dBm, BPF = 100Hz VCC = 2.5V, Rg = 1kΩ, BPF = 20Hz to 20kHz
55
80
μV
I1 (on)
VCC = 0.85V, V5 ≥ 0.5V
0.1
1.0
μA
Power off voltage sensitivity
V1 (off)
VCC = 0.85V, V5 ≤ 0.1V
Muting off current sensitivity
I10 (off)
VCC = 0.85V, V5 ≥ 0.5V
1.0
μA
Muting on voltage sensitivity
V10 (on)
VCC = 0.85V, V5 ≤ 0.1V
Output noise voltage
VNO
Power on current sensitivity
0.5
0.6 0.1
0.5
0.6
V
V
Note) The quiescent current is respresented by the current flowing into pin 6. The respective maximum currents flowing into pin 1 and pin 10 are calculated by (pin voltage -0.5) / 16 [V/kΩ] and the total current increases by these current values.
Package Dimensions unit : mm (typ) 3426 5.0
5 0.35 1.75 MAX
0.15
1.5
1.0
0.175
1
0.835
0.37
6.4
6
4.4
10
SANYO : SOIC10
No.A2033-2/8
LA4537MC Block Diagram
Test Circuit I1
I10 2
P/SW
3 1
LA4537MC
1
V1
1 1 P/SW
MT/SW 10
MT/SW
4
4
2
2
IN 1
3
PRE GND
4
IN 2
5
REF
Rg
OUT 1
9
POWER GND
8
OUT 2
7
2 V10
3
+
+
+
SG
VR
RL
1 2 Rg
RL
VCC
+
DC
VCC 6
RIPPLE
A ICC
Sample Application Circuit 1 (Standard)
LA4537MC ON
P/SW
OFF
VR SG 2
MT/SW 10
OFF
MT/SW
ON
VR
SG 1
1 P/SW
2
IN 1
3
PRE GND
4
IN 2
OUT 1
9
POWER GND
8
OUT 2
7
+
+
RL + +
5
REF
RL
+
VCC
VCC 6
No.A2033-3/8
LA4537MC Sample Application Circuit 2 (Output capacitor shared)
LA4537MC ON
P/SW
OFF
1 P/SW
MT/SW 10
OFF
MT/SW
ON RL
VR
VR SG 1
SG 2
2
IN 1
3
PRE GND
4
IN 2
OUT 1
9
POWER GND
8
OUT 2
7
+
RL +
+ 5
REF
+
VCC
VCC 6
No.A2033-4/8
3 2 1 7 5 3 2 0.1 0.1
2
3
5
7
2
1
3
5
7
Output power, PO -- mW
PO -- VCC
RL=16Ω fin=1kHz
THD -- PO
100 7 5 3 2
z
f in
10 7 5 3 2 1 7 5 3 2
8
8
6
THD=1% 4
2
3
5
7
2
1
3
5
7
Output power, PO -- mW
10
PO -- VCC
RL=32Ω fin=1kHz
THD=10%
10
fin= 10k Hz =1 kH z
VCC=1.2V RL=32Ω
0.1 0.1
10
Output power, PO -- mW
12
Output power, PO -- mW
fin
Hz
10 7 5
Total harmonic distortion, THD -- %
3 2
=1 kH z
fin= 10k
Hz
VCC=1.2V RL=16Ω
f in = 100 H
THD -- PO
100 7 5
f i n= 100
Total harmonic distortion, THD -- %
LA4537MC
THD=10%
6
THD=1%
4
2
2
0 0.5
1
1.5
2
2.5
3
0 0.5
4
3.5
1
1.5
Supply voltage, VCC -- V
THD -- fin
10
2
VCC=0.9V
1
VCC=1.2V
7 5 3 2
0.1 0.01
200
Power dissipation, Pd -- mW
Total harmonic distortion, THD -- %
3
2 3
5 7 0.1
2 3
5 7 1
2 3
5 7 10
2 3
Frequency, fin -- kHz
V =3 C VC
5 =1. V CC
50
1
4
3.5
4
0.8
0.6
0.4
100
150
100
3.5
V
0
1
1.5
2
2.5
3
Supply voltage, VCC -- V
Pd -- PO
fin=1kHz RL=16Ω
3
PO=0.5mW fin=1kHz RL=16Ω
0.2 0.5
5 7100
Supply current, ICCOP -- mA
Total harmonic distortion, THD -- %
5
2.5
THD -- VCC
1.2
PO=0.5mW RL=16Ω
7
2
Supply voltage, VCC -- V
ICCOP -- PO
VCC=3V fin=1kHz RL=16Ω
80
60
40
20
0 1
2
3
5
7
10
2
3
Output power, PO -- mW/ch
5
7
100
1
2
3
5
7
10
2
3
Output power, PO -- mW/ch
5
7
100
No.A2033-5/8
LA4537MC Vg -- fin
Voltage gain, Vg -- dB
35
30
25
20 0.01
Output noise voltage, Vno -- µVrms
70
2 3
5 7 0.1
2 3
5 7 1
2 3
5 7 10
2 3
Frequency, fin -- kHz
60
55
1
1.5
2
2.5
3
3.5
27.5
CT -- fin
2
2.5
3
4
3.5
90
80
70
60
50
2
3
5 7 1
2
3
5 7 10
2
3
5 7 100
Signal source resistance, Rg -- kΩ
CT -- VCC
VO=-20dBm fin=100Hz Rg=1kΩ RL=16Ω
50
40
1.5
Vno -- Rg
55
VCC=1.2V VO=-20dBm Rg=1kΩ RL=16Ω
50
1
VCC=2.5V RL=16Ω
40 0.1
4
Crosstalk, CT -- dB
Crosstalk, CT -- dB
30
Supply voltage, VCC -- V
Supply voltage, VCC -- V 60
32.5
100
65
50 0.5
VO=-20dBm fin=1kHz RL=16Ω Cout=220µF
25 0.5
5 7 100
Vno -- VCC
Rg=1kΩ RL=16Ω
Vg -- VCC
35
VCC=1.2V VO=-20dBm RL=16Ω Cout=220µF
Output noise voltage, Vno -- µVrms
Voltage gain, Vg -- dB
40
45
40
30 0.01
5 7 0.1
2 3
5 7 1
2 3
5 7 10
2 3
Frequency, fin -- kHz
35 0.5
5 7100
2
2.5
3
4
3.5
VCC=1.2V RL=16Ω
7 5 3
On-time -- msec
60
1.5
AMP On-time -- Cref
1000
VCC=1.2V VO=-20dBm f=100Hz Rg=1kΩ RL=16Ω
1
Supply voltage, VCC -- V
CT -- Cref
70
Crosstalk, CT -- dB
2 3
50
40
2
100 7 5 3
30 2
20
10 1
2
3
5
7
10
2
Capacitance, Cref -- µF
3
5
7
100
1
2
3
5
7
10
2
Capacitance, Cref -- µF
3
5
7
100
No.A2033-6/8
LA4537MC SVRR -- Cref
70
VCC=1.0V VR=-30dBm Rg=1kΩ RL=16Ω
60
55
SVRR -- dB
SVRR -- dB
60
SVRR -- f
65
VCC=1.0V VR=-30dBm f=100Hz Rg=1kΩ RL=16Ω
50
50
45 40 40
30 2
1
55
5
7
2
10
3
5
Capacitance, Cref -- µF
7
SVRR -- VCC
VR=-30dBm f=100Hz Rg=1kΩ RL=16Ω
45
40
2 3
5 7 0.1
2 3
5 7 1
2 3
5 7 10
2 3
5 7 100
Frequency, f -- kHz
VMT -- fin
--85
50
SVRR -- dB
35 0.01
100
Mutting level, VMT -- dBm
60
3
VCC=0.9V Vin=-10dBm RL=16Ω V1=0.85V V10=0.3V
--90
Same characteristics during power-off mode
--95
--100
35
30 0.5
1
1.5
2
2.5
3
3.5
--105 0.01
4
Supply voltage, VCC -- V
--90
VMT -- VCC
Vin=-10dBm fin=100Hz RL=16Ω V1=0.85V V10=0.3V
9
Same characteristics during power-off mode
Quiescent current drain, ICCO -- mA
Mutting level, VMT -- dBm
--85
--95
--100
--105 0.5
5 7 0.1
5 7 1
2 3
5 7 10
2 3
5 7 100
ICCO -- VCC
V1=0.85V no load no signal
8
2 3
Frequency, fin -- kHz
7
te Mu
6
off
5 4 3
n Mute o
2 1 0
1
1.5
2
2.5
3
3.5
4
Supply voltage, VCC -- V 1
2 3
V1=0.85V V10=0.85V
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Supply voltage, VCC -- V
Pin voltage -- VCC REF (5pin)
Pin voltage -- V
0.8
OUT (7pin, 9pin)
0.6
0.4
0.2
0 0.5
1
1.5
2
2.5
3
3.5
4
Supply voltage, VCC -- V
No.A2033-7/8
LA4537MC
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PS No.A2033-8/8
