TIDA-00756
Always-on Low-power Gas Sensing with 10+ Year Coin Cell Battery Life Reference Design
TIDA-00756
Overview
This reference design uses nano-power operational amplifiers, comparators, system timers, temperature sensors and the SimpleLink™ ultra-low power 2.4-GHz wireless microcontroller (MCU) platform to demonstrate an ultra-low power carbon-monoxide detector implementation. These technologies lead to an extremely long battery life of over 10 years with a standard CR2032 lithium-ion coin-cell battery, which could be used for applications including gas detection or air quality monitoring. The carbon monoxide detector has sensitivity up to 1000 ppm with a standby current of 1.07 µA. The design guide includes techniques for system design, detailed test results and information to get the design up and running quickly.
Features
- Use of nano-power analog ultra-low-power design resulting in 10-year battery life from a single CR2032 coin cell
- Carbon monoxide gas sensor and analog logic always powered on to enable continuous monitoring and fast response times
- Bluetooth® Low Energy (BLE) wireless connectivity reduces installation costs and allows multiple sensors to communicate with a single host
- Self-check and end-of-life monitoring recognizes malfunctioning gas sensor and reports status every five minutes (configurable)
- Carbon-monoxide gas detection range of 0 to 1000 ppm with ±15% accuracy
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUBX8C.PDF (3087 K)
Reference design overview and verified performance test data
TIDRMO0A.PDF (1042 K)
Detailed schematic diagram for design layout and components
TIDRMO1A.PDF (82 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRMO2A.PDF (2051 K)
Detailed overview of design layout for component placement
TIDRMO4A.ZIP (1916 K)
Files used for 3D models or 2D drawings of IC components
TIDCCE2A.ZIP (812 K)
Design file that contains information on physical board layer of design PCB
TIDRMO3A.PDF (2341 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
Bluetooth products
CC2650 — SimpleLink™ 32-bit Arm Cortex-M3 multiprotocol 2.4 GHz wireless MCU with 128kB Flash
Data sheetComparators
TLV3691 — Nanopower, small-size, single comparator
Data sheetDigital temperature sensors
TMP103 — ±2°C Digital temperature sensor with I2C/SMBus capable of 1.4V in WCSP
Data sheetESD & surge protection ICs
TPD1E10B06 — 12-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package
Data sheetPrecision op amps (Vos<1mV)
LPV811 — Single Channel 450nA Precision Nanopower Operational Amplifier
Data sheetReal-time clocks (RTCs) & timers
TPL5111 — Ultra low power system timer (35 nA) for power gating in duty cycled applications
Data sheetStart development
Technical documentation
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| Type | Title | Date | |
|---|---|---|---|
| * | Design guide | Low-Power Carbon Monoxide (CO) Detector BLE 10-Year Battery Life Design Guide (Rev. C) | Nov. 13, 2017 |
| Application note | Extend Battery Life and Simplify Calibration in Gas Sensing Applications (Rev. A) | Feb. 06, 2018 | |
| Technical article | Collecting environmental data with less energy and wiring | May 23, 2017 | |
| Technical article | Increasing battery life in IoT devices | May 05, 2017 | |
| Technical article | How to improve IoT designs with a nanopower EMI-tolerant op amp | Nov. 09, 2016 | |
| More literature | TIDA-00756 Firmware | Jun. 30, 2016 | |
| Technical article | Trends in building automation: connected sensors for energy efficiency | Feb. 17, 2016 |
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