AD7173-8:  Low Power, 8-/16-Channel, 31.25 kSPS, 24-Bit, Highly Integrated Sigma-Delta ADC

Product Details

Product Status:Recommended for New Designs

The AD7173-8 is a fast settling, highly accurate, low power, 8-/ 16-channel, multiplexed ADC for low bandwidth input signals with integrated input buffers.

Integrated precision, 2.5 V, low drift (3.5 ppm/°C), band gap reference and integrated oscillator.

Eight flexible setups with configurability for output data rate, digital filter mode, offset/gain error correction, reference selection, buffer enables and more.

Sinc5 + sinc1 filter maximizes channel scan rate, and sinc3 filter maximizes resolution and enhanced 50 Hz/60 Hz rejection, with four selectable options to maximize rejection.

Integrated diagnostic features, including CRC, register checksum, temperature sensor, crosspoint multiplexer, burnout currents, and GPIOs/GPOs.

APPLICATIONS

  • Process control: PLC/DCS modules
    Voltage, current, temperature, and pressure measurement
    Flow meters
  • Medical and scientific multichannel instrumentation
  • Seismic instrumentation
  • Chemical analysis instrumentation: chromatography

FEATURES and BENEFITS

  • Low power, 8-/16-channel, highly integrated multiplexed analog-to-digital converter (ADC)
  • Integration
    Precision analog input buffers and reference input buffers
    2.5 V precision reference
    (3.5 ppm/°C)
    Cross point multiplexer (enable system diagnostic)
  • 8 full differential or 16 single-ended channels
    Clock oscillator
    GPIO and GPO pins with automatic external mux control
  • Fast and flexible output rate:
    1.25 SPS to 31.25 kSPS
  • Channel scan data rate: 6.21 kSPS/channel (161 μs settling)
  • Performance specifications
    17.5 noise free bits at 31.25 kSPS
    23 noise free bits at 1.25 SPS
    INL: ±3 ppm/FSR
  • 85 dB rejection of 50 Hz and 60 Hz with 50 ms settling
  • See datasheet for additional features

Functional Block Diagram for AD7173-8

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD7173-8 Filter Model  (xlsx, 324 kB) Design Tool XLSX

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.

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Price, packaging, availability

AD7173-8 Model Options
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.

AD7173-8SDZ Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD7173-8SDZ Status: Production Evaluation Board $89.00 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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