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Description

The RF2690 is an integrated complete IF AGC amplifier and quadrature demodulator designed for the receive section of W-CDMA applications. It is designed to amplify received IF signals, while providing 70dB of gain control range, a total of 90dB gain, and demodulation to base band I and Q signals.

This circuit is designed as part of RFMD’s single mode W-CDMA chipset, which includes the RF9678 as modulator and IF AGC and the RF2638 as upconvertor. The IC is manufactured on an advanced 25GHz FTSilicon Bi-CMOS process, and is packaged in a 20-pin, 4mmx4mm, leadless chip carrier.
Schematic

Features : 

• Digitally Controlled Power Down Mode

• 2.7V to 3.3V Operation

• Digital LO Quadrature Divide-by-4

• IF AGC Amp with 70dB Gain Control

• 80dB Maximum Voltage Gain