Reference Design to Extend Coin Cell Battery Run Time in Wireless Ultrasonic Gas Leak Detector


Design files


This reference design demonstrates a low-power wireless sensor which detects gas leaks by analyzing the ultrasonic spectrum for particular signatures. The system is designed to operate from a single Li-Primary coin cell and communicate wirelessly to a base station, which removes all requirements for wiring and enables easy installation. The design incorporates an ultra-low-power battery fuel gauge to accurately predict battery health and provide advance notice of upcoming end-of-life for scheduled battery replacement.

  • Accurate li-primary battery gauging enables extended lifetime and predictable maintenance
  • Uses multiple power domains to optimize system current consumption
  • System diagnostics available for precision power evaluation during development
  • Over three years of operation on coin cell battery ehen sensing every 30 seconds
  • Leak detection independent of gas type; does not require concentration of gas to contact sensor
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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.

TIDUCU1.PDF (3174 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement


Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDRVE4.PDF (1267 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

TPS61070Adjustable, 600-mA switch, 1200-kHz boost converter in ThinSOT-23 with power-saving mode

Data sheet: PDF | HTML
Audio CODECs

TLV320AIC3256Very Low-Power Stereo Codec with miniDSP and DirectPath™ HP Amplifier

Data sheet: PDF | HTML
Battery fuel gauges

BQ35100Battery fuel gauge for non-rechargeable batteries (lithium primary) and end-of-service monitor

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS731150-mA, high-accuracy, ultra-low-dropout voltage regulator with reverse current protection & enable

Data sheet: PDF | HTML

CSD13201W1012-V, N channel NexFET™ power MOSFET, single WLP 1 mm x 1 mm, 34 mOhm

Data sheet: PDF | HTML
Sub-1 GHz wireless MCUs

CC1310SimpleLink™ 32-bit Arm Cortex-M3 Sub-1 GHz wireless MCU with 128kB Flash

Data sheet: PDF | HTML

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Technical documentation

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Type Title Date
* Design guide Extend Coin Cell Battery Run Time in Wireless Ultrasonic Gas Leak Detector Dec. 01, 2017

Related design resources

Hardware development

BQ35100EVM-795 bq35100 Lithium Primary Cell Evaluation Module Using End-of-Service Monitor Gas Gauging LAUNCHXL-CC1310 CC1310 LaunchPad™ development kit for sub-1-GHz SimpleLink™ wireless MCU

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