描述 Description

The W3030 is a monolithic integrated circuit that provides most of the receive path functions required to meet the IS-136 (and IS-54) standard. The W3030 converts FM or digitally modulated IF carriers up to 200 MHz and provides required IF gain and separate baseband detectors for the two modulation modes.

特性 Features

■ Proven double conversion architecture:

- First IF capability: 10 MHz to over 1000 MHz

- Second IF capability: 0.2 MHz to 2.0 MHz

■ Dual second IF amplifiers and demodulators:

- Analog-mode limiting amplifier and FM quadrature detector

- Digital-mode linear AGC amplifiers with dual-mixer I & Q quadrature demodulator

■ Accurate, onboard local oscillator phase splitter for digital quadrature demodulator

■ Four enable/powerdown modes, selectable from two digital control pins, allow operation with minimal supply current

■ Low supply current

■ Analog received signal strength indicator (RSSI) available

■ Analog AGC for digital-mode IF amplifiers

■ Over 100 dB combined voltage gain

Applications

■ IS-136 (North American dual-mode) cellular radio portable and mobile terminals

■ Cellular radio base stations

■ Digital satellite communications

■ Multisymbol signaling receivers