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AD9251 датащи(PDF) 1 Page - Analog Devices |
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AD9251 датащи(HTML) 1 Page - Analog Devices |
1 / 36 page 14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 1.8 V Dual Analog-to-Digital Converter AD9251 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. 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 ©2009 Analog Devices, Inc. All rights reserved. FEATURES 1.8 V analog supply operation 1.8 V to 3.3 V output supply SNR 74.3 dBFS at 9.7 MHz input 71.5 dBFS at 200 MHz input SFDR 93 dBc at 9.7 MHz input 80 dBc at 200 MHz input Low power 33 mW per channel at 20 MSPS 73 mW per channel at 80 MSPS Differential input with 700 MHz bandwidth On-chip voltage reference and sample-and-hold circuit DNL = ±0.45 LSB Serial port control options Scalable analog input: 1 V p-p to 2 V p-p differential Offset binary, gray code, or twos complement data format Optional clock duty cycle stabilizer Integer 1-to-8 input clock divider Data output multiplex option Built-in selectable digital test pattern generation Energy-saving power-down modes Data clock out with programmable clock and data alignment APPLICATIONS Communications Diversity radio systems Multimode digital receivers GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA I/Q demodulation systems Smart antenna systems Battery-powered instruments Hand held scope meters Portable medical imaging Ultrasound Radar/LIDAR FUNCTIONAL BLOCK DIAGRAM VIN+A VIN–A VREF SENSE VCM RBIAS VIN–B VIN+B ORA D0A D13A DCOA DRVDD ORB D13B D0B DCOB SDIO GND AVDD SCLK SPI PROGRAMMING DATA PDWN DFS CLK+ CLK– MODE CONTROLS DCS DUTY CYCLE STABILIZER SYNC DIVIDE 1TO 8 OEB CSB REF SELECT ADC ADC AD9251 Figure 1. PRODUCT HIGHLIGHTS 1. The AD9251 operates from a single 1.8 V analog power supply and features a separate digital output driver supply to accommodate 1.8 V to 3.3 V logic families. 2. The patented sample-and-hold circuit maintains excellent performance for input frequencies up to 200 MHz and is designed for low cost, low power, and ease of use. 3. A standard serial port interface supports various product features and functions, such as data output formatting, internal clock divider, power-down, DCO/DATA timing and offset adjustments, and voltage reference modes. 4. The AD9251 is packaged in a 64-lead RoHS compliant LFCSP that is pin compatible with the AD9268 16-bit ADC, the AD9258 14-bit ADC, the AD9231 12-bit ADC, and the AD9204 10-bit ADC, enabling a simple migration path between 10-bit and 16-bit converters sampling from 20 MSPS to 125 MSPS. |
Аналогичный номер детали - AD9251 |
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Аналогичное описание - AD9251 |
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