RF2125PCBA datasheet(5/6 Pages) RFMD

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RF2125

Rev A7 010112

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.

1.2

1.4

1.6

1.8

2.2

2.4

2.6

Frequency (GHz)

RF2125 Gain

DB(|S[2,1]|)

Vcc=6.5V, Icc=200mA

DB(GMax)

Vcc=6.5V, Icc=200mA

DB(|S[2,1]|)

Vcc=5.0V, Icc=50mA

DB(GMax)

Vcc=5.0V, Icc=50mA

1.5

2.5

FREQUENCY (GHz)

RF2125 S12

-37

-36

-35

-34

-33

DB(|S[1,2]|)

10.0

5.0

4.0

-0.2

-0

RF2125 Input / Output Impedance, Class A bias

Swp Max

2.5GHz

Swp Min

1GHz

S11

S22

1GHz

2.5 GHz

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