Alternative Parts


Features and Benefits

  • High performance
    • True differential analog input range: ±VREF
      • 0 V to VREF with VREF between 2.5 V to 5 V
      • Easy to drive with the ADA4941-1 or ADA4940-1
    • Throughput: 1 MSPS
      • Zero latency architecture
    • 18-bit resolution with no missing codes
    • INL: ±1 LSB typical, ±2 LSB maximum
    • Dynamic range: 99 dB, VREF = 5 V
    • SNR: 98 dB at fIN = 1 kHz, VREF = 5 V
    • THD: −119 dB at fIN = 1 kHz, VREF = 5 V
    • SINAD: 97 dB at fIN = 1 kHz, VREF = 5 V
  • Low power dissipation
    • Single-supply 2.5 V operation with 1.8 V, 2.5 V, 3 V, and 5 V logic interface
    • 4 mW at 1 MSPS (VDD only)
    • 7 mW at 1 MSPS (total)
    • 70 μW at 10 kSPS
  • Proprietary serial interface
    • SPI-/QSPI™/ MICROWIRE™-/DSP-compatible1
  • Ability to daisy-chain multiple ADCs and busy indicator
  • 10-lead MSOP and 3 mm × 3 mm 10-lead LFCSP
  • Wide operating temperature range: −40°C to +85°C

Product Details

The AD7982 is an 18-bit, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD. The AD7982 contains a low power, high speed, 18-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, the AD7982 samples the voltage difference between the IN+ and IN− pins. The voltages on these pins usually swing in opposite phases between 0 V and VREF. The reference voltage, VREF, is applied externally and can be set independent of the supply voltage, VDD. Its power scales linearly with throughput.

The serial peripheral interface (SPI)-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. The AD7982 is compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate VIO supply.

The AD7982 is available in a 10-lead MSOP or a 10-lead LFCSP with operation specified from −40°C to +85°C.


  • Automated test equipment
  • Data acquisition systems
  • Medical instruments
  • Machine automation

Product Lifecycle icon-recommended 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 (2)

Documentation & Resources

  • View All (23)
  • Data Sheets (1)
  • Application Notes (3)
  • User Guides (2)
  • Tested Product Combinations (1)
  • Technical Books (1)
  • Tutorials (3)
  • Product Selection Guide (1)
  • Circuit Note (3)
  • Technical Articles (8)
  • Technical Articles

    Tools & Simulations

    Precision ADC Driver Tool

    The Precision ADC Driver Tool is a web application that simulates the performance of precision ADC and driver combinations. Potential issues with driver selection, kickback settling, and distortion are flagged, and design tradeoffs can be quickly evaluated. Simulations and calculations include system noise, distortion, and settling of the ADC input

    Precision ADC Driver Tool

    IBIS Models

    AD7982 IBIS Models

    Reference Designs (3)

    Product Recommendations

    AD7982 Companion Parts

    Recommended Digital Isolators

    • For SPI Interface, lowest power, 2.5 kVrms isolation: ADUM1401.
    • For SPI Interface, enhanced system-level ESD performance, 2.5 kVrms isolation: ADUM3401.
    • For SPI Interface, smallest package, low voltage I/O (1.8 V to 5.5 V): ADUM3481.
    • For SPI Interface, low power, 5.0 kVrms isolation: ADUM4401.

    Recommended External Voltage References

    • For low drift, low noise and high current output applications: ADR435.
    • For low drift, low noise, low power: ADR4550.
    • For low drift, low noise and low dropout: ADR445.
    • For driving the voltage reference input: AD8031, AD8655.

    Recommended Driver Amplifiers

    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.

    PCN-PDN Information

    Sample & Buy

    Ordering FAQs

    See our Ordering FAQs for answers to questions about online orders, payment options and more.


    Buy Now Pricing

    (**) Displayed Buy Now Price and Price Range is based on small quantity orders.


    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

    Please see the latest communication from our CCO regarding lead times.



    Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact with any questions regarding this Sample Site.

    Price Table Help


    Evaluation Boards

    Pricing displayed is based on 1-piece.

    Up to two boards can be purchased through To order more than two, please purchase through one of our listed distributors.

    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.