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AD7766:  24-Bit, 8.5 mW, 109 dB, 128/64/32 kSPS ADCs

Product Details


The AD7766/AD7766-1/AD7766-2 are high performance 24-bit oversampled SAR analog-to-digital converters (ADC). 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, all contained in a 16-lead TSSOP package.

Ideal for ultralow power data acquisition (such as PCI- and USB-based 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 include a SYNC/PD (synchronization/power-down) pin, allowing the synchronization of multiple AD7766 devices. The addition of an SDI pin provides the option of daisy chaining multiple AD7766 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

FEATURES and BENEFITS

  • 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
  • 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

Functional Block Diagram for AD7766

Design Tools,Models,Drivers & Software

Title Content Type File Type
CED1Z FPGA Project for AD7766-1 with Nios driver FPGA HDL HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products


Recommended Voltage References for the AD7766

Recommended Driver Amplifiers for the AD7766
  • When driving from a fully differential source, we recommend the ADA4841-1 or the AD8475.
  • When driving from a single-ended source, we recommend the ADA4941-1.
Recommended Voltage Regulator for the AD7766 Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD7766 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7766BRUZ Status: Production 16 ld TSSOP 16 Ind Tube, 96 $6.66 $6.02 Y  Material Info PCN Purchase Sample
AD7766BRUZ-1 Status: Production 16 ld TSSOP 16 Ind Tube, 96 $6.66 $6.02 Y  Material Info PCN Purchase
AD7766BRUZ-1-RL7 Status: Production 16 ld TSSOP 16 Ind Reel, 1000 - $6.02 Y  Material Info PCN Purchase
AD7766BRUZ-2 Status: Production 16 ld TSSOP 16 Ind Tube, 96 $6.66 $6.02 Y  Material Info PCN Purchase
AD7766BRUZ-2-RL7 Status: Production 16 ld TSSOP 16 Ind Reel, 1000 - $6.02 Y  Material Info PCN Purchase
AD7766BRUZ-RL7 Status: Production 16 ld TSSOP 16 Ind Reel, 1000 - $6.02 Y  Material Info PCN Purchase
Price Table Help

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.

AD7766/AD7766-1/AD7766-2 Evaluation Kit
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD7766-1EDZ Status: Production Evaluation Board $59.00 Yes -
EVAL-AD7766-2EDZ Status: Production Evaluation Board $59.00 Yes -
EVAL-AD7766EDZ Status: Production Evaluation Board $59.00 Yes -
EVAL-CED1Z Status: Production Evaluation Board $249.00 Yes -

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.

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