RF9957 Datasheet - RF Micro Devices

RF9957 CDMA/FM RECEIVE AGC AND DEMODULATOR

The RF9957 is an integrated complete IF AGC amplifier and Quadrature Demodulator designed for the receive section of dual-mode CDMA/FM cellular and PCS applications. It is designed to amplify received IF signals, while providing 100dB of gain control range, and demodulate to baseband I and Q signals.

RF9957 Features

* Supports Dual Mode Operation (CDMA and FM) FL+ GC 23 19

* Digitally Controlled Power Down Mode

* 2.7V to 3.3V Operation 16 Q OUT+ 15 Q OUT- CDMA IN+ 4 CDMA IN- 5 IN SEL 14 FM IN+ 8 FM IN- 9 Input Select Gain Control

* Quadrature LO Divider

* IF AGC A

RF9957_RFMicroDevices.pdf