AD7641

18-Bit, 2 MSPS SAR ADC
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Product Details

The AD7641 is a 18-bit, 2 MSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates from a single 2.5 V power supply. The part contains a high-speed 18-bit sampling ADC, an internal conversion clock, an internal reference buffer, error correction circuits, and both serial and parallel system interface ports. It features a very high sampling rate mode (Warp) and a fast mode (Normal) for asynchronous conversion rate applications.

The AD7641 is hardware factory calibrated and comprehensively tested to ensure ac parameters such as signal-to-noise ratio (SNR) and total harmonic distortion (THD) in addition to the more traditional dc parameters of gain, offset and linearity.

Operation is specified from −40°C to +85°C.

Applications

  • Medical instruments
  • High dynamic data acquisition
  • Instrumentation
  • Spectrum analysis
  • ATE

Product Lifecycle

checked Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits

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Product Details

The EVAL-AD7641EDZ is a fully featured evaluation Kit for the AD7641. This board operates in stand alone mode or in conjunction with the Converter Evaluation and Development board, EVAL-CED1Z . When operated with the Converter Evaluation and Development board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the Converter Evaluation and Development board.

Documentation

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Product Recommendations

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AD7641 Companion parts

Recommended Driver Amplifiers

  • For a fully differential attenuating precision amplifier , we recommend the AD8475 .
  • For single-ended to differential driver applications , we recommend the AD8139 or the ADA4930-1 .
  • For low bias current, low frequency
  • For low noise, low distortion, low power , we recommend the ADA4841-1 .
  • For low noise, high gain bandwidth , we recommend the AD8021, ADA4899-1 or the AD8022 .

Recommended External Voltage References

  • For external reference buffer , we recommend the AD8031 or the AD8032 .
  • For low noise, low temperature drift , we recommend the ADR421, ADR431 or the AD780 .
  • For low power , we recommend the ADR291 .
  • For lowest cost , we recommend the AD1582 .

Reference Materials

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Design Resources

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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.

AD7641 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

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The USA 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. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.