AD7175-2

24-BIT, 250 kSPS Sigma Delta ADC With 20μs Settling & True Rail To Rail Buffers
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Product Details

The AD7175-2 is a 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 50 kSPS (20 μs) for fully settled data. The output data rates range from 5 SPS to 250 kSPS.

The AD7175-2 integrates key analog and digital signal condition-ing 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/60 Hz rejection at 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, or ±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 AD7175-2 is in a 24-lead TSSOP package. Note that, throughout this data sheet, the dual function pin names are referenced by the relevant function only.

APPLICATIONS

  • Process control: PLC/DCS modules
    Temperature and pressure measurement
  • Medical and scientific multichannel instrumentation
  • Chromatography

Product Lifecycle

checked 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

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EVAL-AD7175-2 Circuit Diagram

Product Details

The EVAL-AD7175-2SDZ is a fully featured evaluation kit for the AD7175-2. This board operates in stand alone mode or in conjunction with the System Development Platform, EVAL-SDP-CB1Z . When operated with the System Development Platform software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the System Development Platform . When operated in standalone mode the ADZS-BRKOUT-EX3 break out board is recommended for access to various control pins.

The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CB1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.

Design Resources

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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.

AD7175-2 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

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Reviews

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Overview

3 Reviews
3 out of 3 (100%) customers recommend this product.
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Most Helpful Review

by Aurel
An entirely remarkable product: fast, high accuracy, low noise, requires few external components, allows flexibility in power supply. Great results at 500 SPS in automatic weighing and filling machine. Straightforward programming , fast digital interface with CRC. This is barely scratching the surface, a lot of features still remain to be explored. Thank you AD!

Most Recent Review

by Kenichi
Details are under examination now. However, I think the device is the most suitable for the voltage measurement in minute heat flow sensing.

All Reviews

by Kenichi, 4 Feb 15
Heat flow sensing
Details are under examination now. However, I think the device is the most suitable for the voltage measurement in minute heat flow sensing.
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by Johnny, 9 Dec 14
Ad7175-2
Good performance. Not seen the benefits of the Sinc 3 filter. Not seen any tangible difference between the different data rates when the Enhanced filter is selected.
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by Aurel, 9 Dec 14
Amazing device-AD7175_2
An entirely remarkable product: fast, high accuracy, low noise, requires few external components, allows flexibility in power supply. Great results at 500 SPS in automatic weighing and filling machine. Straightforward programming , fast digital interface with CRC. This is barely scratching the surface, a lot of features still remain to be explored. Thank you AD!
Was this Helpful?Helpful(2)

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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.


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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.