AD7175-2

24-BIT, 250 kSPS Sigma Delta ADC With 20μs Settling & True Rail To Rail Buffers
Manufactured by:

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.

Alternative Parts

Evaluation Kits

X +

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.

Tools & Simulations

X +

Reference Designs

X +

Product Recommendations

X +
AD7175-2 Companion parts

Recommended Digital Isolators

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

Recommended Power Solutions

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

Recommended Driver Amplifiers

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

Recommended External Multiplexers

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

Recommended External Voltage References

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

Design Resources

X +

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

Discussions

X+

Didn't find what you were looking for?

Sample & Buy

X+
Back
Check Inventory

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.


Price Table Help

 
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.