Alternative Parts

  • AD7172-4
    AD7172-4

    Lower Power and Lower Noise, faster Throughput, true Rail to Rail Buffers. Enhanced feature set.

  • AD7172-2
    AD7172-2

    Low Power, 24-Bit, 31.25 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers

  • AD7173-8
    AD7173-8

    Lower Power and Lower Noise, faster Throughput. Integrated Buffers and precision reference. Enhanced feature set.

  • AD7175-2
    AD7175-2

    24-Bit, 250 kSPS, Sigma-Delta ADC with 20 µs Settling and True Rail-to-Rail Buffers

  • AD7176-2
    AD7176-2

    24-Bit, 250 kSPS Sigma Delta ADC with 20 µs Settling

Overview

Features and Benefits

  • 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

Product Details

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

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Software & Systems Requirements

Tools & Simulations

Virtual Eval - BETA

Virtual Eval is a web application to assist designers in product evaluation of ADCs, DACs, and other ADI products. Using detailed models on Analog’s servers, Virtual Eval simulates crucial part performance characteristics within seconds. Configure operating conditions such as input tones and external jitter, as well as device features like gain or digital down-conversion. Performance characteristics include noise, distortion, and resolution, FFTs, timing diagrams, response plots, and more.

VirtualEval

Reference Designs (2)

Product Recommendations

AD7177-2 Companion Parts

Recommended Digital Isolators

  • For SPI Interface, smallest package, low voltage I/O (1.8 V to 5.5 V): ADUM3481.
  • For SPI Interface, low power, 5.0 kVrms isolation: ADUM4401.
  • For SPI Interface, lowest power, 2.5 kVrms isolation: ADUM1401.
  • For SPI Interface, enhanced system-level ESD performance, 2.5 kVrms isolation: ADUM3401.

Recommended Power Solutions

  • For voltage conversion which can double or invert voltages to help with power supply rail generation: ADM660.
  • For a low noise, high power supply rejection, positive supply voltage LDO: ADP7118.
  • For a low noise, high power supply rejection, negative supply voltage LDO: ADP7182.

Recommended Driver Amplifiers

  • For a single supply, ultralow noise, zero drift, rail to rail input and output amplifier: ADA4528-2.
  • For a high voltage, ultralow noise, zero drift, rail to rail output amplfier: ADA4522-2.

Recommended External Multiplexers

  • For low Ron, 4:1 channel multiplexer: ADG1404.
  • For low Ron with four differential inputs: ADG1409.

Recommended External Voltage References

  • For the family of low noise, low drift and high accuracy references: ADR445, ADR4550.

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

AD7177-2 Discussions

RE: AD7177-2, Missing conversions
15 week(s) ago in Precision ADCs
RE: AD7177-2, unstable channel registers
15 week(s) ago in Precision ADCs
RE: AD7177-2 low-frequency noise
15 week(s) ago in Precision ADCs
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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.