AD7177-2
Info : RECOMMENDED FOR NEW DESIGNS
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AD7177-2

32-Bit, 10 kSPS, Sigma-Delta ADC with 100 µs Settling and True Rail-to-Rail Buffers

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $17.25
Features
  • 32-bit data output
  • Fast and flexible output rate: 5 SPS to 10 kSPS
  • Channel scan data rate of 10 kSPS/channel (100 µs settling)
  • Performance specifications
    • 19.1 noise free bits at 10 kSPS
    • 20.2 noise free bits at 2.5 kSPS
    • 24.6 noise free bits at 5 SPS
    • INL: ±1 ppm of FSR
  • 85 dB filter rejection of 50 Hz and 60 Hz with 50 ms settling
  • User configurable input channels
    • 2 fully differential channels or 4 single-ended channels
    • Crosspoint multiplexer
  • On-chip 2.5 V reference (±2 ppm/°C drift)
  • True rail-to-rail analog and reference input buffers
  • Internal or external clock
  • See data sheet for additional features
Additional Details
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The AD7177-2 is a 32-bit low noise, fast settling, multiplexed, 2-/4-channel (fully/pseudo differential) Σ-Δ analog-to-digital converter (ADC) for low bandwidth inputs. It has a maximum channel scan rate of 10 kSPS (100 µs) for fully settled data. The output data rates range from 5 SPS to 10 kSPS.

The AD7177-2 integrates key analog and digital signal conditioning blocks to allow users to configure an individual setup for each analog input channel in use. Each feature can be user selected on a per channel basis. Integrated true rail-to-rail buffers on the analog inputs and external reference inputs provide easy to drive high impedance inputs. The precision 2.5 V low drift (2 ppm/°C) band gap internal reference (with output reference buffer) adds embedded functionality to reduce external component count.

The digital filter allows simultaneous 50 Hz and 60 Hz rejection at a 27.27 SPS output data rate. The user can switch between different filter options according to the demands of each channel in the application. The ADC automatically switches through each selected channel. Further digital processing functions include offset and gain calibration registers, configurable on a per channel basis.

The device operates with a 5 V AVDD1 supply, or with ±2.5 V AVDD1/AVSS, and 2 V to 5 V AVDD2 and IOVDD supplies. The specified operating temperature range is −40°C to +105°C. The AD7177-2 is available in a 24-lead TSSOP package.

Applications

  • Process control: PLC/DCS modules
  • Temperature and pressure measurement
  • Medical and scientific multichannel instrumentation
  • Chromatography
Part Models 2
1ku List Price Starting From $17.25

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7177-2BRUZ
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AD7177-2BRUZ-RL7
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Product Lifecycle

PCN

Feb 16, 2016

- 16_0009

Change of MSL Rating for AD7172-2, AD7175-2, AD7176-2 & AD7177-2 TSSOP Devices

AD7177-2BRUZ

PRODUCTION

AD7177-2BRUZ-RL7

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Filter by Model

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Product Lifecycle

PCN

Feb 16, 2016

- 16_0009

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Change of MSL Rating for AD7172-2, AD7175-2, AD7176-2 & AD7177-2 TSSOP Devices

AD7177-2BRUZ

PRODUCTION

AD7177-2BRUZ-RL7

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

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EVAL-AD7177-2

AD7177-2 Evaluation Board

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EVAL-AD7177-2

AD7177-2 Evaluation Board

AD7177-2 Evaluation Board

Features and Benefits

  • Full featured evaluation board for the AD7177-2
  • PC control in conjunction with the Analog Devices, Inc.,
    EVAL-SDP-CB1Z system demonstration platform (SDP)
  • PC software for control and data analysis (time domain)
  • Standalone capability

Product Detail

The EVAL-AD7177-2SDZ evaluation kit features the AD7177-2, a 32-bit, 10 kSPS analog-to-digital converter (ADC) with integrated rail-to rail-analog input buffers, on-board power supply regulation, and an external amplifier section for amplifier evaluation. A 7 V to 9 V ac-to-dc adapter is regulated to 5 V and 3.3 V, which supply the AD7177-2 and support components. 

The EVAL-AD7177-2SDZ evaluation board connectsto the USB port of a PC via the EVAL-SDP-CB1Z SDP controller board.

The AD7177-2 evaluation software fully configures the AD7177-2 device functionality via a user accessible register interface and provides dc time domain analysis in the form of waveform graphs, histograms, and associated noise analysis for ADC performance evaluation.

Full specifications for the AD7177-2 are available in the product data sheet, which should be consulted in conjunction with this user guide UG-849 when using the evaluation board.

Tools & Simulations

Tools & Simulations 4

Reference Designs

Reference Designs 1

PLC/DCS Quad Channel Voltage and Current Input Front End

PLC/DCS Quad Channel Voltage and Current Input with HART Compatibility

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PLC/DCS Quad Channel Voltage and Current Input with HART Compatibility

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Circuits from the lab

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PLC/DCS Quad Channel Voltage and Current Input with HART Compatibility

Features and Benefits

  • Quad Channel Voltage and Current Inputs 
  • Fully Isolated 
  • HART Compatibility
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