Alternative Parts


Features and Benefits

  • 16-bit ADC family
  • Dual simultaneous sampling
  • Fully differential analog inputs
  • Throughput conversion rate
    • 1 MSPS for AD4680
    • 500 kSPS for AD4681
  • SNR (typical)
    • 92.5 dB, VREF = 3.3 V external
    • 100 dB with 8× OSR, RES = 1
  • On-chip oversampling function
  • Resolution boost function
  • INL (maximum) 1.5 LSBs
  • 2.5 V internal reference at 10 ppm/°C
  • High speed serial interface
  • −40°C to +125°C operation
  • 3 mm × 3 mm, 16-lead LFCSP
  • Wide common-mode range
  • Alert function

Product Details

The AD4680/AD4681 are 16-bit, pin-compatible, dual simultaneous sampling, high speed, low power, successive approximation register (SAR) analog-to-digital converters (ADCs) that operate from a 3.0 V to 3.6 V power supply and feature throughput rates of 1 MSPS for the AD4680 and 500 kSPS for the AD4681. The analog input type is differential, accepts a wide common-mode input voltage, and is sampled and converted on the falling edge of CS. Integrated on-chip oversampling blocks improve dynamic range and reduce noise at lower bandwidths. A buffered internal 2.5 V reference is included. Alternatively, an external reference up to 3.3 V can be used.

The conversion process and data acquisition use standard control inputs, allowing easy interfacing to microprocessors or digital signal processors (DSPs). The device is compatible with 1.8 V, 2.5 V, and 3.3 V interfaces using a separate logic supply. The AD4680/AD4681 are available in a 16-lead lead frame chip scale package (LFCSP) with operation specified from −40°C to +125°C.


  • Motor control position feedback
  • Motor control current sense
  • Sonar
  • Power quality
  • Data acquisition systems
  • Erbium doped fiber amplifier (EDFA) applications
  • Inphase (I) and quadrature (Q) demodulation

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Software & Systems Requirements

Tools & Simulations

IBIS Models

Product Recommendations

AD4680 Companion Parts

Recommended Driver Amplifiers

Recommended Low Dropout Regulators

Recommended Voltage Reference

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.

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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.



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