RTD to Voltage Reference Design Using Instrumentation Amplifier and Current Reference
TIPD193
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See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- RTD to Voltage Using Instrumentation Amplifier Design Guide
(PDF 1241 KB)
28 Apr 2015
-
TIPD193 Design File
(ZIP 896 KB)
02 Jun 2015
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.