Alternative Parts


Features and Benefits

  • Fast 16-Bit ADC 200 kSPS Throughput Rate
  • Single 5 V Supply Operation
  • Power Dissipation 100 mW Max
  • Power-Down Mode 50 µW
  • High Speed Serial Interface
  • Choice of External or Internal 2.5 V Reference
  • Input Ranges:
    Unipolar; 0 V–10 V, 0 V–5 V and 0 V–4 V Bipolar;  ±10 V, ±5 V and ±3.3 V
  • On-Chip Clock
  • 20-Lead Skinny DIP or SOIC Package
  • 28-Lead Skinny SSOP Package

Product Details

The AD977 / AD977A is a high speed, low power 16-bit A/D converter that operates from a single 5 V supply. The AD977A has a throughput rate of 200 kSPS whereas the AD977 has a throughput rate of 100 kSPS. Each part contains a successive approximation, switched capacitor ADC, an internal 2.5 V reference, and a high speed serial interface. The ADC is factory calibrated to minimize all linearity errors. The AD977 / AD977A is specified for full scale bipolar input ranges of ±10 V, ±5 V and ±3.3 V, and unipolar ranges of 0 V to 10 V, 0 V to 5 V and 0 V to 4 V.

The AD977 / AD977A is comprehensively tested for ac parameters such as SNR and THD, as well as the more traditional dc parameters of offset, gain and linearity.


  1. Fast Throughput
    The AD977 / AD977A is a high speed, 16-bit ADC based on a factory calibrated switched capacitor architecture.
  2. Single-Supply Operation
    The AD977 / AD977A operates from a single 5 V supply and dissipates only 100 mW max.
  3. Comprehensive DC and AC Specifications
    In addition to the traditional specifications of offset, gain and linearity, the AD977 / AD977A is fully tested for SNR and THD.

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.

PCN-PDN Information

Sample & Buy

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.

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