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AD9481-PCB Datasheet(PDF) 1 Page - Analog Devices |
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AD9481-PCB Datasheet(HTML) 1 Page - Analog Devices |
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1 / 29 page  8-Bit, 250 MSPS 3.3 V A/D Converter AD9481 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: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. FEATURES DNL = ±0.35 LSB INL = ±0.26 LSB Single 3.3 V supply operation (3.0 V to 3.6 V) Power dissipation of 439 mW at 250 MSPS 1 V p-p analog input range Internal 1.0 V reference Single-ended or differential analog inputs De-multiplexed CMOS outputs Power-down mode Clock duty cycle stabilizer APPLICATIONS Digital oscilloscopes Instrumentation and measurement Communications Point-to-point radios Digital predistortion loops FUNCTIONAL BLOCK DIAGRAM D7A TO D0A VIN+ VIN– CLK+ CLK– VREF SENSE DCO+ DCO– AGND DRGND DRVDD AVDD AD9481 PDWN S1 CLOCK MGMT T AND H 8-BIT ADC PIPELINE CORE LOGIC REFERENCE PORT A 8 PORT B 8 8 DS+ DS– D7B TO D0B Figure 1. GENERAL DESCRIPTION The AD9481 is an 8-bit, monolithic analog-to-digital converter (ADC) optimized for high speed and low power consumption. Small in size and easy to use, the product operates at a 250 MSPS conversion rate, with excellent linearity and dynamic performance over its full operating range. To minimize system cost and power dissipation, the AD9481 includes an internal reference and track-and-hold circuit. The user only provides a 3.3 V power supply and a differential encode clock. No external reference or driver components are required for many applications. The digital outputs are TTL/CMOS-compatible with an option of twos complement or binary output format. The output data bits are provided in an interleaved fashion along with output clocks that simplifies data capture. The AD9481 is available in a Pb-free, 44-lead, surface-mount package (TQFP-44) specified over the industrial temperature range (−40°C to +85°C). PRODUCT HIGHLIGHTS 1. Superior linearity. A DNL of ±0.35 makes the AD9481 suitable for many instrumentation and measurement applications 2. Power-down mode. A power-down function may be exercised to bring total consumption down to 15 mW. 3. De-multiplexed CMOS outputs allow for easy interfacing with low cost FPGAs and standard logic. |
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