Overview

Features and Benefits

  • Download AD7766-2-KGD Data Sheet. Available as Known Good Die and fully guaranteed in data sheet specifications
  • Oversampled successive approximation (SAR) architecture
  • High performance ac and dc accuracy, low power
    • 115.5 dB dynamic range, 32 kSPS (AD7766-2)
    • 112.5 dB dynamic range, 64 kSPS (AD7766-1)
    • 109.5 dB dynamic range, 128 kSPS (AD7766)
    • −112 dB THD
  • Exceptionally low power
    • 8.5 mW, 32 kSPS (AD7766-2)
    • 10.5 mW, 64 kSPS (AD7766-1)
    • 15 mW, 128 kSPS (AD7766)
  • High dc accuracy
    • 24 bits, no missing codes (NMC)
    • INL: ±6 ppm (typical), ±15 ppm (maximum)
  • Low temperature drift
    • Zero error drift: 15 nV/°C
    • Gain error drift: 0.4 ppm/°C
  • See data sheet for additional features

Product Details

The AD7766/AD7766-1/AD7766-2 are high performance, 24-bit, oversampled SAR analog-to-digital converters (ADCs). The AD7766/AD7766-1/AD7766-2 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 USBbased systems), the AD7766/AD7766-1/AD7766-2 provide 24-bit resolution. The combination of exceptional SNR, wide dynamic range, and outstanding dc accuracy make the AD7766/AD7766-1/ AD7766-2 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 AD7766/AD7766-1/ AD7766-2 accurately gather both ac and dc information.

The AD7766/AD7766-1/AD7766-2 include an on-board digital filter (complete with linear phase response) that acts to eliminate out-of-band noise by filtering the oversampled input voltage. The oversampled architecture also reduces front-end antialias requirements. Other features of the AD7766/AD7766-1/AD7766-2 include a SYNC/PD (synchronization/power-down) pin, allowing the synchronization of multiple AD7766/AD7766-1/AD7766-2 devices. The addition of an SDI pin provides the option of daisy chaining multiple AD7766/AD7766-1/AD7766-2 devices.

The AD7766/AD7766-1/AD7766-2 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)

Software & Systems Requirements

Product Recommendations

AD7766 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

Discussions

AD7766 Discussions

RE: VREF rise time
17 week(s) ago in Precision ADCs
RE: AD7766-1 @ BF518 SPORT, data integrity issues
18 week(s) ago in Precision ADCs
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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.