Micropower Electrochemical Gas Sensor Amplifier Reference Design
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Key Document


This reference design consists of a micropower “Potentistat” type electrochemical sensor circuit for battery operated portable or long-life portable or fixed remote location devices. Using a nanopower amplifier and reference circuit allows the circuit to function continuously and independently of the monitoring processor to keep the sensor biased to avoid lengthy start-up settling times.

  •  Potentiometric type amplifier adaptable for many electrochemical cell applications
  •  Accommodates biased and unbiased sensors
  •  Adaptable to many two and three terminal electrochemical cell applications
  •  Micropower (<1uA) total amplifier circuit supply current for long battery life
  •  Booster-Pack compatible PCB format for use with MSP430 LaunchPad development platform

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
HDC1080  ±2% low-power digital humidity and temperature sensor  Sensors  Sample & Buy View Design Kits & Evaluation Modules
LPV802  Dual Channel 320nA Nanopower Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
REF1112  1-µA, 3-pin SOT-23 10-ppm/°C shunt voltage reference  Voltage references  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
HDC1080 Download Download
LPV802 Download
REF1112 Download Download

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Technical documentation

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Datasheet (1)
Title Type Size (KB) Date
PDF 1432 16 Nov 2016
User guide (1)
Title Type Size (KB) Date
PDF 1135 13 Nov 2017
Design files (6)
Title Type Size (KB) Date
ZIP 209 29 Sep 2016
ZIP 622 29 Sep 2016
PDF 269 29 Sep 2016
PDF 56 29 Sep 2016
PDF 42 29 Sep 2016
PDF 101 29 Sep 2016
More literature (1)
Title Type Size (KB) Date
ZIP 1314 29 Sep 2016
Related Tools & Software

Hardware development (1)

Name Part Number Tool Type
MSP430FR6989 LaunchPad Development Kit  MSP-EXP430FR6989  Development kit 

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