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  4. AD9940

Alternative Parts


Features and Benefits

  • 56 MSPS correlated double sampler (CDS) with 6 dB gain
  • On-chip horizontal and RG timing driver
  • Single-supply operation (2.7 V min )
  • Precision Timing™ core with 0.37 ns resolution at 56 MSPS
  • Low power CMOS: 105 mW at 2.7 V (115 mW at 3.0 V)
  • 48-lead LQFP and 48-lead LFCSP packages

Product Details

The AD9940 is a high speed, correlated double sampler for high speed digital imaging applications. Integrated with a programmable timing driver using the Precision Timing core, the AD9940 features a 56 MHz CDS amplifier with 6 dB of fixed gain, an internal voltage reference supply, and timing control for all the high speed clocks necessary for CCD imaging systems. The Precision Timing core allows adjustment of high speed clocks with a resolution of 0.37 ns. Output buffers are also included, providing drive strength for PCB traces and direct connection to an image signal processor such as the AD9941.

The AD9940 is ideal for applications that need to place the CDS and VGA/ADC circuits on separate PC boards. The fully differential outputs of the AD9940 provide good signal integ-rity when interfaced with the differential input AD9941. The AD9940 operates from a single 2.7 V power supply, typically dissipates 105 mW (excluding the H/RG drive current), and is packaged in 48-lead LQFP and 48-lead LFCSP packages.


  • Professional HDTV camcorders
  • Professional/high end digital cameras
  • Broadcast cameras
  • Industrial high speed cameras
  • High speed data-acquisition systems

Product Lifecycle icon-not-recommended Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
AD9940BCPZ Material Declaration Reliability Data 48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)
AD9940BCPZRL Material Declaration Reliability Data 48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)
AD9940BSTZ Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
AD9940BSTZRL Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
Wafer Fabrication Data

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Sample & Buy

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Buy Now Pricing

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List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

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