Product Description

The RF2689 is an integrated complete IF AGC amplifier and quadrature demodulator designed for the receive section of W-CDMA and GSM/DCS applications. It is designed to amplify received IF signals, while providing 70dB of gain control range, a total of 90dB gain, and demodulate to baseband I and Q signals. This circuit is designed as part of RFMD’s multimode W-CDMA/GSM/DCS chipset, which also includes the RF2688 W-CDMA/GSM/DCS transmit modulator and IF AGC/Upconverter. The IC is manufactured on an advanced 25GHz FT Silicon Bi-CMOS process, and is packaged in a 20-pin, 4mmx4mm, leadless chip carrier.

Features

• Digitally Controlled Power Down Mode

• 2.7V to 3.3V Operation

• Digital LO Quadrature Divide-by-8

• IF AGC Amp with 70dB Gain Control

• 80dB Maximum Voltage Gain

Typical Applications

• Multimode W-CDMA/GSM/DCS/EDGE

• W-CDMA Systems

• GSM Systems