RF2125 查看數據表（PDF） - RF Micro Devices
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RF2125 Datasheet PDF : 6 Pages
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RF2125
The data below is valid only under small-signal conditions. The device needs to be biased in Class A, with the out-
put power below the 1-dB compression point. For large signal operation this data may be used as a starting point,
but further tuning to optimize performance will be required.
Voltage and idle current have only very limited effect on the input and output impedances, hence only one plot is
shown, valid for VCC =5 to 7V, and ICC=50 to 250mA.
2
RF2125 Gain
26
24
DB(|S[2,1]|)
Vcc=6.5V, Icc=200mA
22
20
DB(GMax)
Vcc=6.5V, Icc=200mA
18
16
DB(|S[2,1]|)
Vcc=5.0V, Icc=50mA
14
12
DB(GMax)
Vcc=5.0V, Icc=50mA
10
8
6
4
2
0
1
1.2
1.4
1.6
1.8
2
2.2
2.4
2.6
Frequency (GHz)
RF2125 Input / Output Impedance, Class A bias
Swp Max
2.5GHz
2.5 GHz
S11
2.5 GHz
S22
3.0
4.0
5.0
1 GHz
10.0
-33
DB(|S[1,2]|)
-34
-35
-36
RF2125 S12
1 GHz
-0.2
-0.4
-37
1
1.5
2
2.5
FREQUENCY (GHz)
Swp Min
1GHz
Rev A7 010112
2-65
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