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RTD to Voltage Reference Design Using Instrumentation Amplifier and Current Reference

(ACTIVE) TIPD193

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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

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




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 Reference  Sample & Buy Not Available

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1241 28 Apr 2015 853
Design files (2)
Title Abstract Type Size (KB) Date Views
PDF 203 02 Jun 2015 41
PDF 24 02 Jun 2015 577
Related Tools & Software

Software (1)



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