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AD9218BST-80 Folha de dados(PDF) 1 Page - Analog Devices |
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AD9218BST-80 Folha de dados(HTML) 1 Page - Analog Devices |
1 / 28 page 10-Bit, 40/65/80/105 MSPS 3 V Dual Analog-to-Digital Converter AD9218 Rev. C 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 ©2006 Analog Devices, Inc. All rights reserved. FEATURES Dual 10-bit, 40 MSPS, 65 MSPS, 80 MSPS, and 105 MSPS ADC Low power: 275 mW at 105 MSPS per channel On-chip reference and track-and-hold 300 MHz analog bandwidth each channel SNR = 57 dB @ 41 MHz, Encode = 80 MSPS 1 V p-p or 2 V p-p analog input range each channel 3.0 V single-supply operation (2.7 V to 3.6 V) Power-down mode for single-channel operation Twos complement or offset binary output mode Output data alignment mode Pin compatible with the 8-bit AD9288 –75 dBc crosstalk between channels APPLICATIONS Battery-powered instruments Hand-held scopemeters Low cost digital oscilloscopes I and Q communications Ultrasound equipment FUNCTIONAL BLOCK DIAGRAM AD9218 REF TIMING ENCODE A / 10 / 10 / 10 / 10 GND AINA D9A TO D0A USER SELECT NO. 1 USER SELECT NO. 2 DATA FORMAT/ GAIN D9B TO D0B AINA AINB AINB REFINA REFINB REFOUT ENCODE B TIMING T/H T/H ADC ADC OUTPUT REGISTER OUTPUT REGISTER VD VDD Figure 1. GENERAL DESCRIPTION The AD9218 is a dual 10-bit monolithic sampling analog-to- digital converter with on-chip track-and-hold circuits. The product is low cost, low power, and is small and easy to use. The AD9218 operates at a 105 MSPS conversion rate with outstanding dynamic performance over its full operating range. Each channel can be operated independently. The ADC requires only a single 3.0 V (2.7 V to 3.6 V) power supply and a clock for full operation. No external reference or driver components are required for many applications. The digital outputs are TTL/CMOS compatible and a separate output power supply pin supports interfacing with 3.3 V or 2.5 V logic. The clock input is TTL/CMOS compatible and the 10-bit digital outputs can be operated from 3.0 V (2.5 V to 3.6 V) supplies. User-selectable options offer a combination of power-down modes, digital data formats, and digital data timing schemes. In power-down mode, the digital outputs are driven to a high impedance state. PRODUCT HIGHLIGHTS 1. Low Power. Only 275 mW power dissipation per channel at 105 MSPS. Other speed grades proportionally scaled down while maintaining high ac performance. 2. Pin Compatibility Upgrade. Allows easy migration from 8-bit to 10-bit devices. Pin compatible with the 8-bit AD9288 dual ADC. 3. Easy to Use. On-chip reference and user controls provide flexibility in system design. 4. High Performance. Maintains 54 dB SNR at 105 MSPS with a Nyquist input. 5. Channel Crosstalk. Very low at –75 dBc. 6. Fabricated on an Advanced CMOS Process. Available in a 48-lead low profile quad flat package (7 mm × 7 mm LQFP) specified over the industrial temperature range (−40°C to +85°C). |
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Descrição semelhante - AD9218BST-80 |
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