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AD6650PCB Folha de dados(PDF) 1 Page - Analog Devices |
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AD6650PCB Folha de dados(HTML) 1 Page - Analog Devices |
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1 / 28 page  PrJ 02/27/03 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective companies. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved. a Diversity IF to Baseband GSM/EDGE Narrowband Receiver Preliminary Technical Data AD6650 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 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. Figure 1. AD6650 Functional Block Diagram |
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