Low-Power PIR Motion Detector With Bluetooth Smart & 10-Year Coin Cell Battery Life Reference Design
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Key Document


The TIDA-00759 TI Design uses nano-power operational amplifiers, comparators, and the SimpleLink™ ultra-low power 2.4GHz 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 could be used for applications including motion detection or lighting control through occupancy detection.  The PIR sensor has sensitivity of up to 30-feet with shutdown current of 1.63-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 Shutdown Current of 1.63 uA (PIR sensor remains active in Shutdown)
  • Ultra-Low Active State Current Due to Low Active Processor and Radio Transmit Currents (1.57 mA for 56.66 ms)
  • Interrupt Driven Bluetooth Smart Wireless Communication of Motion for Increased Power Savings
  • Motion Sensitivity up to 30ft

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CC2650  SimpleLink™ 32-bit Arm Cortex-M3 multiprotocol 2.4 GHz wireless MCU with 128kB Flash  Wireless connectivity  Sample & Buy View Design Kits & Evaluation Modules
LPV521  Nanopower, 350 nA, 1.6 V RRIO Single, CMOS input op amp  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TLV3691  Nanopower, small-size, single comparator  Amplifiers  Sample & Buy Not Available

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Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CC2650 Download Download
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LPV521 Download Download
TLV3691 Download
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Technical documentation

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Application note (1)
Title Type Size (KB) Date
PDF 581 10 May 2021
User guide (1)
Title Type Size (KB) Date
PDF 4402 15 Dec 2016
Design files (6)
Title Type Size (KB) Date
ZIP 607 15 Mar 2016
ZIP 875 15 Mar 2016
PDF 1760 15 Mar 2016
PDF 234 15 Mar 2016
PDF 140 15 Mar 2016
PDF 648 15 Mar 2016
More literature (2)
Title Type Size (KB) Date
Multiple Files   15 Dec 2020
ZIP 4465 15 Mar 2016
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Reference Designs (3)

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