Transcript
PB1T1A RF 1:1 Transformer
50Ω
1 to 500 MHz Functional Diagram
Applications
Features Good Phase Unbalance, 1 deg. typ
Impedance Matching
Surface Mount
Balanced Amplifier
4
1:1 Impedance Ratio
5
RoHS- compliant 1:1 transformer
3
6
Low Cost
2
Broadband
1 Function
Pin No.
Function
Pin No.
Primary
1
Secondary
4
The PB1T1A is a RoHS compliant 1:1 RF flux
Secondary CT
2
Not used
5
coupled transformer in a low cost, surface
Primary DOT
3
Secondary DOT
6
p Description
mount
packaging
and
broadband.
The
Applications include impedance matching and
Absolute Maximum Ratings
balanced amplifier. Also the PB1T1A is consist of single to differential mode. Transformer is
Parameter
Rating
RF Power
500 mW
DC Current
30mA
Operating Temperature
-40°C to 85°C
Storage Temperature
-55 to +125
surface mount packaging and is designed high temperature soldering reflow.
Specifications Parameters
Units
Freq.
Min.
Typ.
Max.
Frequency
MHz
1 – 500
ㅡ
ㅡ
ㅡ
Insertion Loss
dB
Amplitude Unbalance
dB
Phase Unbalance
Degrees
1 – 400
ㅡ
400 – 500 1 – 200
ㅡ
0.8 ㅡ
0.3
ㅡ
1.6
200 – 500
1 – 500
0.5
ㅡ
1
ㅡ
Test Conditions : T=25°C, 50ohm System, Measurement of the differential in phase between the two differential outputs. (measured from ±180°)
http://www.prewell.com 1
July 2008
PB1T1A RF 1:1 Transformer Typical i l Performance f Data Frequency
MHz
10
50
200
400
500
Insertion Loss
dB
0.47
0.46
0.23
0.14
0.74
Input Return Loss
dB
15.7
15.6
16.0
12.0
8.6
Amplitude Unbalance
dB
0.05
0.02
0.28
0.83
1.54
Phase Unbalance
Degrees
0.2
0
1
0.7
1
Input Return Loss 25
0.8
20
Return Loss (dB)
Insertion Loss (dB)
Insertion Loss 1.0
0.6 0.4
15 10
0.2 5
0.0 0
0
100
200
300
400
0
500
100
200
300
400
500
Frequency (MHz)
Frequency (MHz)
Outline Drawing (mm)
Schematic
PCB Footprint (mm) 2.54
1.65 7 62 7.62
2.54
http://www.prewell.com 2
July 2008
