TIPD170

Single-Supply Strain Gauge in a Bridge Configuration Reference Design

TIPD170

Design files

Overview

This strain gauge reference design accurately measures the resistance of a strain gauge by being placed in a bridge configuration. The differential voltage of the bridge produced by variation in strain gauge resistance is amplified using the INA333. The bridge excitation voltage and INA333 reference voltage is supplied using the REF5025.

Features
  • Measured Uncalibrated Error = 0.953 %
  • Measured Calibrated Error = 0.0154 %
  • 5 V Single Supply
  • Output : 225 mV to 4.72 V
  • 2.5 V Reference Voltage
  • This strain gauge reference design includes theory, complete error analysis, component selection, simulation, PCB design, and measured data that correlates with theory, calculations, and simulation

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUB00.PDF (861 K)

Reference design overview and verified performance test data

TIDCBJ0.ZIP (442 K)

Detailed schematic diagram for design layout and components

TIDRJ68.PDF (183 K)

Detailed schematic diagram for design layout and components

TIDRJ69.PDF (112 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

Products

Includes TI products in the design and potential alternatives.

Instrumentation amplifiers

INA333Low-Power, Zero-Drift, Precision Instrumentation Amplifier

Data sheet document-pdfAcrobat PDF open-in-new HTML
Series voltage references

REF50252.5-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Design guide Single-Supply Strain Gauge in a Bridge Configuration Design Guide Nov. 02, 2015

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