PRODUCT DESCRIPTION
The AD6650 is a diversity, IF to baseband receiver for GSM/EDGE. This narrow band receiver consists of an integrated DVGA, IF-to-baseband I&Q demodulators, low pass filtering, and a dual wideband ADC. The chip can accommodate IF input frequencies from 70 MHz to 300 MHz. This receiver architecture is designed such that only one external SAW filter(one for main and one for diversity) is required in the entire Rx signal path to meet GSM/EDGE blocking requirements.
Digital decimation and filtering circuitry is embedded on chip to generate serial output I&Q data streams. The decimating filters remove unwanted signals and noise outside the channel of interest. In addition, programmable RAM Coefficient filters allow anti-aliasing, matched filtering, and static equalization functions to be combined in a single, cost effective filter.
The AD6650 is part of a complete GSM/EDGE receive and transmit chipset. Other components in this chipset are: RF to IF amplifier/mixers, receive and transmit frequency hopping synthesizers, and a baseband to IF transmit modulator and ramping chip.

FEATURES
   Digital VGA
   I & Q Demodulators
   Active Low Pass Filters
   Dual Wideband ADC
   Programmable Decimation and Channel Filters
   Phase Locked Loop Circuitry
   Serial Data Output Ports
   IF Frequencies 70-300MHz
   10 dB Noise Figure
   +24 dBm Input IP2
   -13 dBm Input IP3
   3.3 Volt I/O and CMOS Core
   I2C and Microprocessor Interface
   JTAG Boundary Scan

APPLICATIONS
   GSM/EDGE Single Carrier and Diversity Receivers
   Micro and Pico Cell Systems
   Wireless Local Loop
   Smart Antenna Systems
   Software Radios
   In Building Wireless Telephony