Overview

Features and Benefits

  • 16-channel, dual, simultaneously sampled inputs
  • Independently selectable channel input ranges
    • True bipolar: ±10 V, ±5 V, ±2.5 V
  • Single 5 V analog supply and 2.3 V to 3.6 V VDRIVE supply
  • Fully integrated data acquisition solution
    • Analog input clamp protection
    • Input buffer with 1 MΩ analog input impedance
    • First-order antialiasing analog filter
    • On-chip accurate reference and reference buffer
    • Dual 14-bit SAR ADC
    • Throughput rate: 2× 1 MSPS per channel pair
    • Oversampling capability with digital filter
    • Flexible sequencer with burst mode
  • Flexible parallel/serial interface
    • SPI/QSPI/MICROWIRE/DSP compatible
    • Optional CRC error checking
  • Hardware/software configuration
  • Performance
    • 85.3 dB typical SNR at 500 kSPS (2× oversampling)
    • 85 dB typical SNR at 1 MSPS
    • −103 dB typical THD at ±10 V range
    • ±0.3 LSB INL (typical), ±0.99 LSB DNL (maximum)
    • 8 kV ESD analog input pins only
  • On-chip self detect function
  • 80-lead LQFP package

Product Details

The AD7617 is a 14-bit, DAS that supports dual simultaneous sampling of 16 channels. The AD7617 operates from a single +5 V supply and can accommodate ±10 V, ±5 V, and ±2.5 V true bipolar input signals while sampling at throughput rates up to 1 MSPS per channel pair with 85 dB signal-to-noise ratio (SNR). Higher SNR performance can be achieved with the on-chip oversampling mode (85.3 dB for an oversampling ratio (OSR) of 2).

The input clamp protection circuitry can tolerate voltages up to ±21 V. The AD7617 has 1 MΩ analog input impedance, regardless of sampling frequency. The single-supply operation, on-chip filtering, and high input impedance eliminate the need for driver op amps and external bipolar supplies.

The device contains analog input clamp protection, a dual, 14-bit charge redistribution successive approximation register (SAR) analog-to-digital converter (ADC), a flexible digital filter, a 2.5 V reference and reference buffer, and high speed serial and parallel interfaces. The AD7617 is serial peripheral interface (SPI)/QSPI/DSP/MICROWIRE compatible.

Applications

  • Power line monitoring
  • Protective relays
  • Multiphase motor control
  • Instrumentation and control systems
  • Data acquisition systems (DASs)
     

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.

Evaluation Kits (1)

Software & Systems Requirements

Tools & Simulations

IBIS Models

Product Recommendations

AD7617 Companion Parts

Recommended External Voltage References

  • For low noise and high accuracy: ADR421.

Recommended Low Dropout Regulators and Switchers

  • For VCC (5V) and for VDRIVE (3.3V): AD7118.

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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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.