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AD6653 Dataheets PDF



Part Number AD6653
Manufacturers Analog Devices
Logo Analog Devices
Description IF Diversity Receiver
Datasheet AD6653 DatasheetAD6653 Datasheet (PDF)

IF Diversity Receiver AD6653 FEATURES SNR = 70.8 dBc (71.8 dBFS) in a 32.7 MHz BW at 70 MHz @ 150 MSPS SFDR = 83 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 stabi.

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IF Diversity Receiver AD6653 FEATURES SNR = 70.8 dBc (71.8 dBFS) in a 32.7 MHz BW at 70 MHz @ 150 MSPS SFDR = 83 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, 12-bit, 125 MSPS/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. AVDD VIN+A VIN–A SHA FUNCTIONAL BLOCK DIAGRAM FD[0:3]A DVDD FD BITS/THRESHOLD DETECT ADC I LP/HP DECIMATING HB FILTER + Q FIR DRVDD AD6653 D11A D0A CMOS/LVDS OUTPUT BUFFER VREF SENSE CML RBIAS REF SELECT VIN–B VIN+B SHA SIGNAL MONITOR ADC 32-BIT TUNING NCO Q LP/HP DECIMATING HB FILTER + I FIR fADC/8 NCO DIVIDE 1 TO 8 DUTY CYCLE STABILIZER DCO GENERATION PROGRAMMING DATA CMOS OUTPUT BUFFER MULTI-CHIP SYNC FD BITS/THRESHOLD SIGNAL MONITOR DETECT DATA SIGNAL MONITOR INTERFACE SPI CLK+ CLK– DCOA DCOB D11B D0B 06708-001 AGND SYNC FD[0:3]B SMI SMI SMI SDIO/ SCLK/ CSB SDFS SCLK/ SDO/ DCS DFS PDWN OEB NOTES 1. PIN NAMES ARE FOR THE CMOS PIN CONFIGURATION ONLY; SEE FIGURE 10 FOR LVDS PIN NAMES. DRGND 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. AD6653 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 ............................................................... 5 ADC AC Specifications ............................................................... 6 Digital Specifications ................................................................... 7 Switching Specifications .............................................................. 9 Timing Specifications ................................................................ 10 Absolute Maximum Ratings.......................................................... 13 Thermal Characteristics ............................................................ 13 ESD Caution................................................................................ 13 Pin Configurations and Function Descriptions ......................... 14 Equivalent Circuits ......................................................................... 18 Typical Performance Characteristics ........................................... 19 Theory of Operation ...................................................................... 24 ADC Architecture ...................................................................... 24 Analog Input Considerations.................................................... 24 Voltage Refe.


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