Power control circuit

The power control loop consists of a power detector, a differential amplifier (part of CRFRT) and a buffer amplifier. The power detector is a combination of a directional coupler and a diode rectifier. The difference of the power control signal (TXC) and the detected signal is amplified and used for the output power control.

Parameter

Minimum

Typical / Nominal

Maximum

Unit / Notes

Supply voltage

4.7

V

Supply current

3

mA

Power control range

16

dB

Power control inaccuracy

+/- 1.0

dB

Dynamic range

46

50

dB

Input control voltage range

0.6

3.5

V

Output control voltage range

0

4

V

Output control current

3

mA

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