Low Power Wireless PIR Motion Detector Reference Design Enabling 10 Year Coin Cell Battery Life


Design files


TIDA-00489 uses nano-power operational amplifiers, comparators and the SimpleLink™ ultra-low power sub-1GHz wireless microcontroller (MCU) platform to demonstrate a low-power wireless motion detector implementation.  These technologies lead to an extremely long battery life, over 10 years, with a standard CR2032 lithium ion coin-cell battery which can be used for applications including motion detection or lighting control through occupancy detection.  The PIR sensor has sensitivity of up to 30 feet with standby current of 1.65 µA.  The design guide includes techniques for system design, detailed test results and information to get the design up and running quickly.

  • Use of nano-power analog for ultra-low power design resulting in 10-year battery life from single CR2032 coin cell
  • Low standby current of 1.65 uA (PIR sensor remains active in standby mode)
  • Ultra-low active state current due to low active processor and radio-transmit currents (1.12 mA for 104.1 ms)
  • Interrupt-driven Sub-1GHz wireless communication of motion for increased power savings
  • Motion sensitivity up to 30 feet
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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.


Reference design overview and verified performance test data

TIDRI03B.PDF (639 K)

Detailed schematic diagram for design layout and components


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

TIDRI05B.PDF (255 K)

Detailed overview of design layout for component placement

TIDRI07B.ZIP (1137 K)

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

TIDCB64B.ZIP (658 K)

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

TIDRI06B.PDF (1982 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

General-purpose op amps

LPV802Dual, 5.5-V, 8-kHz, ultra low quiescent current (320-nA), 1.6-V min supply, RRO op amp

Data sheet: PDF | HTML

TLV3691Nanopower, small-size, single comparator

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 Low-PWR PIR Motion Detector w/ Sub1GHz Wireless Connectivity for 10-Yr Batt Life (Rev. B) Oct. 25, 2016
Application note Wireless Motion Detector With Sub-1 GHz SimpleLink™ Wireless MCU (Rev. C) May 10, 2021
More literature Techniques for PIR-based motion detection Dec. 15, 2020
Technical article Collecting environmental data with less energy and wiring PDF | HTML May 23, 2017
Technical article Increasing battery life in IoT devices PDF | HTML May 05, 2017
Technical article IoT is making buildings greener and more intelligent. Value versus affordability PDF | HTML Jan. 04, 2017
Technical article How to improve IoT designs with a nanopower EMI-tolerant op amp PDF | HTML Nov. 09, 2016
Technical article Why use Sub-1 GHz in your IoT application PDF | HTML Jul. 27, 2016
Technical article Trends in building automation: connected sensors in safety and security PDF | HTML Jul. 20, 2016
Technical article Trends in building automation: connected sensors for energy efficiency PDF | HTML Feb. 17, 2016

Related design resources

Reference designs

TIDA-00759 Low-Power PIR Motion Detector With Bluetooth Smart & 10-Year Coin Cell Battery Life Reference Design TIDA-01069 Advanced Motion Detector Using PIR Sensors Reference Design For False Trigger Avoidance TIDA-01398 Ultra Low-Power Wireless PIR Motion Detector for Cost-Optimized Systems Reference Design

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