Alternative Parts

  • AD7124-8

    Lower power and lower noise, completed signal chain integration with diagnostic features for functional safety, easier evaluation and reduced design time


Features and Benefits

  • 8-/10-Channel, High Resolution Σ-Δ ADCs
  • 24-Bit Resolution
  • Factory-Calibrated
  • Single Conversion Cycle Setting
  • Programmable Gain Front End
  • Simultaneous 50 Hz and 60 Hz Rejection
  • VREF Select ™ Allows Absolute and Ratiometric Measurement Capability
  • Operation Can Be Optimized for
    - Analog Performance (CHOP = 0) or - Channel Throughput (CHOP = 1)

Product Details

The AD7708/18 are complete analog front-ends for low frequency measurement applications. The AD7718 contains a 24-bit sigma delta ADC with PGA and can be configured as 4/5 fully-differential input channels or 8/10 pseudo-differential input channels. Two pins on the device are configurable as analog inputs or reference inputs. The AD7708 is a 16-bit version of the AD7718. Inputs signal ranges from 20mV to 2.56V can be directly converted using these ADCs. Signals can be converted directly from a transducer without the need for signal conditioning.

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 (1)

Software & Systems Requirements

Evaluation Software

Tools & Simulations

IBIS Models

AD7718 IBIS Model

Design Tools

Sigma-Delta ADC Tutorial

An interactive illustration showing the behavior of an idealized sigma-delta A/D converter.

Product Recommendations

AD7718 Companion Parts

Recommended Digital Isolators * For optocoupler alternatives, see our digital isolator selection tables

Recommended Voltage References

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

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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.

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.