Description

The CXA3174N is a 4-bit digital control variable gain amplifier suitable for the communications.

Features

• Gain control amplifier with the wide gain variable range

• Doubler circuit for the LO (local) signal eliminates need for the phase shifter

Functions

• IF signal gain control circuit

• I/Q quadrature demodulator

• Doubler circuit for the LO signal

• Gain control by the 4-bit digital data

• Power saving

Applications

GSM and PCS portable telephones