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AD6655 Dataheets PDF



Part Number AD6655
Manufacturers Analog Devices
Logo Analog Devices
Description IF Diversity Receiver
Datasheet AD6655 DatasheetAD6655 Datasheet (PDF)

IF Diversity Receiver AD6655 FEATURES SNR = 74.5 dBc (75.5 dBFS) in a 32.7 MHz BW at 70 MHz @ 150 MSPS SFDR = 80 dBc to 70 MHz @ 150 MSPS 1.8 V analog supply operation 1.8 V to 3.3 V CMOS output supply or 1.8 V LVDS output supply Integer 1-to-8 input clock divider Integrated dual-channel ADC Sample rates up to 150 MSPS IF sampling frequencies to 450 MHz Internal ADC voltage reference Integrated ADC sample-and-hold inputs Flexible analog input range: 1 V p-p to 2 V p-p ADC clock duty cycle stabil.

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IF Diversity Receiver AD6655 FEATURES SNR = 74.5 dBc (75.5 dBFS) in a 32.7 MHz BW at 70 MHz @ 150 MSPS SFDR = 80 dBc to 70 MHz @ 150 MSPS 1.8 V analog supply operation 1.8 V to 3.3 V CMOS output supply or 1.8 V LVDS output supply Integer 1-to-8 input clock divider Integrated dual-channel ADC Sample rates up to 150 MSPS IF sampling frequencies to 450 MHz Internal ADC voltage reference Integrated ADC sample-and-hold inputs Flexible analog input range: 1 V p-p to 2 V p-p ADC clock duty cycle stabilizer 95 dB channel isolation/crosstalk Integrated wideband digital downconverter (DDC) 32-bit complex, numerically controlled oscillator (NCO) Decimating half-band filter and FIR filter Supports real and complex output modes Fast attack/threshold detect bits Composite signal monitor Energy-saving power-down modes APPLICATIONS Communications Diversity radio systems Multimode digital receivers (3G) TD-SCDMA, WiMax, WCDMA, CDMA2000, GSM, EDGE, LTE I/Q demodulation systems Smart antenna systems General-purpose software radios Broadband data applications PRODUCT HIGHLIGHTS 1. Integrated dual, 14-bit, 150 MSPS ADC. 2. Integrated wideband decimation filter and 32-bit complex NCO. 3. Fast overrange detect and signal monitor with serial output. 4. Proprietary differential input maintains excellent SNR performance for input frequencies up to 450 MHz. 5. Flexible output modes, including independent CMOS, interleaved CMOS, IQ mode CMOS, and interleaved LVDS. 6. SYNC input allows synchronization of multiple devices. 7. 3-bit SPI port for register programming and register readback. FUNCTIONAL BLOCK DIAGRAM AVDD FD[0:3]A FD BITS/THRESHOLD DETECT DVDD DRVDD AD6655 I www.DataSheet4U.com VIN+A VIN–A SHA ADC CMOS/LVDS OUTPUT BUFFER Q LP/HP DECIMATING HB FILTER + FIR D13A D0A VREF SENSE CML RBIAS VIN–B SHA VIN+B ADC I MULTI-CHIP SYNC FD BITS/THRESHOLD DETECT REF SELECT Q LP/HP DECIMATING HB FILTER + FIR SIGNAL MONITOR 32-BIT TUNING NCO fADC /8 NCO DIVIDE 1 TO 8 DUTY CYCLE STABILIZER DCO GENERATION CLK+ CLK– DCOA DCOB CMOS OUTPUT BUFFER D13B D0B PROGRAMMING DATA SIGNAL MONITOR DATA SIGNAL MONITOR INTERFACE SPI AGND SYNC FD[0:3]B NOTES 1. PIN NAMES ARE FOR THE CMOS PIN CONFIGURATION ONLY; SEE FIGURE 10 FOR LVDS PIN NAMES. Figure 1. Rev. 0 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. Specifications subject to change without notice. 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 owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2007 Analog Devices, Inc. All rights reserved. 06709-001 SMI SMI SMI SDFS SCLK/ SDO/ PDWN OEB SDIO/ SCLK/ CSB DCS DFS DRGND AD6655 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Product Highlights ........................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 3 General Description ......................................................................... 4 Specifications..................................................................................... 5 ADC DC Specifications—AD6655BCPZ-80/ AD6655BCPZ-105......................................................................... 5 ADC DC Specifications—AD6655BCPZ-125/ AD6655BCPZ-150......................................................................... 6 ADC AC Specifications—AD6655BCPZ-80/ AD6655BCPZ-105......................................................................... 7 ADC AC Specifications—AD6655BCPZ-125/ AD6655BCPZ-150......................................................................... 8 Digital Specifications—AD6655BCPZ-80/ AD6655BCPZ-105......................................................................... 9 Digital Specifications—AD6655BCPZ-125/ AD6655BCPZ-150....................................................................... 11 Switching Specifications—AD6655BCPZ-80/ AD6655BCPZ-105....................................................................... 13 Switching Specifications—AD6655BCPZ-125/ AD6655BCPZ-150....................................................................... 14 Timing Specifications ................................................................ 15 Absolute Maximum Ratings.......................................................... 18 Thermal Characteristics ........................................................


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