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AD9446BSVZ-801 Datasheet(PDF) 1 Page - Analog Devices |
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AD9446BSVZ-801 Datasheet(HTML) 1 Page - Analog Devices |
1 / 36 page 16-Bit, 80/100 MSPS ADC AD9446 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other 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 © 2005 Analog Devices, Inc. All rights reserved. FEATURES 100 MSPS guaranteed sampling rate (AD9446-100) 83.6 dBFS SNR with 30 MHz input (3.8 V p-p input, 80 MSPS) 82.6 dBFS SNR with 30 MHz input (3.2 V p-p input, 80 MSPS) 89 dBc SFDR with 30 MHz input (3.2 V p-p input, 80 MSPS) 95 dBFS 2-tone SFDR with 9.8 MHz and 10.8 MHz (100 MSPS) 60 fsec rms jitter Excellent linearity DNL = ±0.4 LSB typical INL = ±3.0 LSB typical 2.0 V p-p to 4.0 V p-p differential full-scale input Buffered analog inputs LVDS outputs (ANSI-644 compatible) or CMOS outputs Data format select (offset binary or twos complement) Output clock available 3.3 V and 5 V supply operation APPLICATIONS MRI receivers Multicarrier, multimode cellular receivers Antenna array positioning Power amplifier linearization Broadband wireless Radar Infrared imaging Communications instrumentation GENERAL DESCRIPTION The AD9446 is a 16-bit, monolithic, sampling analog-to-digital converter (ADC) with an on-chip track-and-hold circuit. It is optimized for performance, small size, and ease of use. The product operates up to a 100 MSPS, providing superior SNR for instrumentation, medical imaging, and radar receivers employing baseband (<100 MHz) IF frequencies. The ADC requires 3.3 V and 5.0 V power supplies and a low voltage differential input clock for full performance operation. No external reference or driver components are required for many applications. Data outputs are CMOS or LVDS compatible (ANSI-644 compatible) and include the means to reduce the overall current needed for short trace distances. FUNCTIONAL BLOCK DIAGRAM CMOS OR LVDS OUTPUT STAGING CLOCK AND TIMING MANAGEMENT AGND DRGND DRVDD VREF CLK+ VIN+ AD9446 VIN– CLK– DCO AVDD1 AVDD2 DCS MODE DFS OUTPUT MODE T/H BUFFER 16 PIPELINE ADC 2 32 2 OR D15 TO D0 REF REFB SENSE REFT Figure 1. Optional features allow users to implement various selectable operating conditions, including input range, data format select, and output data mode. The AD9446 is available in a Pb-free, 100-lead, surface-mount, plastic package (100-lead TQFP/EP) specified over the industrial temperature range −40°C to +85°C. PRODUCT HIGHLIGHTS 1. True 16-bit linearity. 2. High performance: outstanding SNR performance for baseband IFs in data acquisition, instrumentation, magnetic resonance imaging, and radar receivers. 3. Ease of use: on-chip reference and high input impedance track-and-hold with adjustable analog input range and an output clock simplifies data capture. 4. Packaged in a Pb-free, 100-lead TQFP/EP package. 5. Clock duty cycle stabilizer (DCS) maintains overall ADC performance over a wide range of clock pulse widths. 6. OR (out-of-range) outputs indicate when the signal is beyond the selected input range. |
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