GENERAL DESCRIPTION

The AD6459 is a 3 V, low power receiver IF subsystem for operation at input frequencies as high as 500 MHz and IFs from 5 MHz up to 50 MHz. It is optimized for operation in GSM, DCS1800 and PCS1900 receivers. It consists of a mixer, an IF amplifier, I and Q demodulators, a phase-locked quadrature oscillator, a precise AGC subsystem, and a biasing system with external power-down.

FEATURES

Fully Compliant with Standard and Enhanced GSM Specification

–11 dBm Input 1 dB Compression Point

0 dBm Input Third Order Intercept

10 dB SSB Noise Figure (50 V)

DC-500 MHz RF and LO Bandwidths

Linear IF Amplifier

Linear-in-dB and Stable over Temperature

Voltage Gain Control

Quadrature Demodulator

On-Board Phase-Locked Quadrature Oscillator

Demodulates IFs from 5 MHz to 50 MHz

Low Power

8 mA at Midgain

2 μA Sleep Mode Operation

2.7 V to 5.5 V Operation

Interfaces to AD7013, AD7015 and AD6421 Baseband Converters

20-Lead SSOP