TI Home >   Semiconductors >   Design resources >   Reference designs >   RTD to Voltage Reference Design Using Instrumentation Amplifier and Current Reference

RTD to Voltage Reference Design Using Instrumentation Amplifier and Current Reference
TIPD193
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical documentation

Support & Training

Order Now


See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document

Description

This reference design translates resistance temperature detectors (RTD) resistance to a voltage level convenient for an ADC input. A precision current reference provides excitation and an instrumentation amplifier scales the signal. The design also uses a three wire RTD configuration to minimize errors due to wiring resistance.

Features
  •  Converts RTD resistance to voltage
  •  0 to 5V output across temperature range
  •  Eliminates lead resistance error
  •  Adjustable set with discrete resistors

See the Important Notice and Disclaimer covering reference designs and other TI resources.


  



Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Test Data

Get results faster with test and simulation data that's been verified.

Download Test Data


TI Devices (2)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
INA326  Precision, Low Drift, CMOS Instrumentation Amplifier  Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
REF200  Dual, 100-µA current source & sink  Voltage references  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA326 Download Download
REF200 Download Download
Download -

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical documentation

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guide (1)
Title Type Size (KB) Date
PDF 1241 28 Apr 2015
Design files (3)
Title Type Size (KB) Date
PDF 203 02 Jun 2015
PDF 24 02 Jun 2015
ZIP 896 02 Jun 2015

Support & training

TI E2E™ forums with technical support from TI engineers

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles