Overview

Features and Benefits

  • Oversampled successive approximation (SAR) architecture
  • High performance ac and dc accuracy, low power
    115.5 dB dynamic range, 32 kSPS (AD7767-2)
    112.5 dB dynamic range, 64 kSPS (AD7767-1)
    109.5 dB dynamic range, 128 kSPS (AD7767)
    −118 dB THD
  • Exceptionally low power
    8.5 mW, 32 kSPS (AD7767-2)
    10.5 mW, 64 kSPS (AD7767-1)
    15 mW, 128 kSPS (AD7767)
  • High dc accuracy
    24 bits, no missing codes (NMC)
    INL: ±3 ppm (typical), ±7.6 ppm (maximum)
  • Low temperature drift
    Zero error drift: 15 nV/°C
    Gain error drift: 0.4 ppm/°C
  • On-chip low-pass FIR filter
  • Linear phase response
    Pass-band ripple: ±0.005 dB
    Stop-band attenuation: 100 dB
  • 2.5 V supply with 1.8 V/2.5 V/3 V/3.6 V logic interface options
  • Flexible interfacing options
    Synchronization of multiple devices
    Daisy-chain capability
    Power-down function
  • Temperature range: −40°C to +105°C

Product Details

The AD7767/AD7767-1/AD7767-2 are high performance, 24-bit, oversampled SAR analog-to-digital converters (ADCs). The AD7767/AD7767-1/AD7767-2 combine the benefits of a large dynamic range and input bandwidth, consuming 15 mW, 10.5 mW, and 8.5 mW power, respectively, and are contained in a 16-lead TSSOP package.

Ideal for ultralow power data acquisition (such as PCI- and USB-based systems), the AD7767/AD7767-1/AD7767-2 provide 24-bit resolution. The combination of exceptional SNR, wide dynamic range, and outstanding dc accuracy make the AD7767/AD7767-1/AD7767-2 ideally suited for measuring small signal changes over a wide dynamic range. This is particularly suitable for applications where small changes on the input are measured on larger ac or dc signals. In such an application, the AD7767/AD7767-1/AD7767-2 accurately gather both ac and dc information.

The AD7767/AD7767-1/AD7767-2 include an on-board digital filter (complete with linear phase response) that acts to elimi-nate out-of-band noise by filtering the oversampled input voltage. The oversampled architecture also reduces front-end antialias requirements. Other features of the AD7767 include a SYNC/PD (synchronization/power-down) pin, allowing the synchronization of multiple AD7767 devices. The addition of an SDI pin provides the option of daisy chaining multiple AD7767 devices.

The AD7767/AD7767-1/AD7767-2 operate from a 2.5 V supply using a 5 V reference. The devices operate from −40°C to +105°C.

Applications

  • Low power PCI/USB data acquisition systems
  • Low power wireless acquisition systems
  • Vibration analysis
  • Instrumentation
  • High precision medical acquisition

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)

Product Recommendations

AD7767 Companion Parts

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Recommended Voltage References

Recommended Voltage Regulator

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.


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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.