The DAQ on a Stick Renesas Strain Gauge is one of a series of reference designs highlighting Renesas’ precision products with different microcontrollers. This reference design is a self-contained demo showing a complete signal chain solution using Renesas precision parts and a Renesas microcontroller. The complete reference design is conveniently housed in a USB stick form factor. This compact design draws power through the USB port and uses a graphical user interface (GUI) to display the real-time voltage readings from a bridge strain gauge or a user supplied sensor. The board image to the right shows the data acquisition (DAQ) on a stick connected to an external foil strain gauge.

The image below shows a simplified schematic of the strain gauge design. The design uses Renesas’ ISL28134 chopper amplifier, ISL22316 digitally controlled potentiometer (DCP), ISL43840 dual 4-channel multiplexer (Mux) configured as a differential Mux, ISL21010 4.096V voltage reference, ISL21010 3.3V voltage reference, the ISL26102 24-bit Delta-Sigma converter, and the R5F10JBC (RL78/G1C) microcontroller.

Key Features

  • Self-contained demo platform
  • 24-bit ADC with programmable sample rate
  • Zero-drift amplifiers
  • Real-time graphing on the GUI
  • Programmable gains available for user supplied sensors

Software and Tools

The installation application includes the following items:

  • GUI software
  • Desktop shortcut for easy access
  • Application note and schematics

Strain Gauge with Op Amp Reference Design

DAQ on a Stick with Strain Gauge

Related Products

Chopper Amplifier

Digitally Controlled Potentiometer

Differential Mux

4.096V Voltage Reference

3.3V Voltage Reference

24-bit Delta-Sigma Converter

(RL78/G1C) Microcontroller

User Guide

TitleTypeLast Updated DateSize
RTKA-BDGSTKEV2Z Evaluation Board User’s Manual
PDF 09 Jul 2019 721 KB


TitleTypeLast Updated DateSize
ISL21010 Datasheet
Micropower Voltage Reference
PDF 19 Apr 2019 3.43 MB
ISL22316 Datasheet
Low Noise, Low Power I2C® Bus, 128 Taps
PDF 19 Jul 2018 1017 KB
ISL26102, ISL26104 Datasheet
Low-Noise 24-bit Delta SIgma ADC
PDF 19 Jul 2018 1.31 MB
ISL28134 Datasheet
5V Ultra Low Noise, Auto-Zero Rail-to-Rail Precision Op Amp
PDF 12 Mar 2020 1.78 MB
ISL43840 Datasheet
Low-Voltage, Single Supply and Dual Supply, Dual 4 to 1 Differential Mulitpexer, Analog Switches with Enable
PDF 19 Jul 2018 748 KB
RL78/G1C Data Sheet
PDF 20 Sep 2016 1.49 MB

TitleTypeLast Updated DateSize
RTKA-BDGSTKEV2Z Software Installer
Software installer for the DAQ on a Stick Strain Gauge
EXE 13 Jul 2019 14.78 MB

WEEE Questionnaire: The WEEE Return Questionnaire is intended for the return of EEEs supplied by Renesas Electronics Europe to its customers in the European Union only.

Disclaimer: THIS MATERIAL IS PROVIDED “AS-IS” FOR EVALUATION PURPOSES ONLY. RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (collectively, “Renesas”) DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION, FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY. Renesas provides evaluation platforms and design proposals to help our customers to develop products. However, factors beyond Renesas' control, including without limitation, component variations, temperature changes and PCB layout, could significantly affect the product performance. It is the user’s responsibility to verify the actual circuit performance.