Motion detector

Products and reference designs

Motion detector

Block diagram

Overview

Motion or occupancy detectors are used to detect security threats, save energy by efficient lighting control and trigger other IoT enabled devices. Our integrated circuits and reference designs help you add different technologies (passive infrared sensor (PIR), mmWave radar, microwave, ultrasonic, time-of-flight, etc.) to your system.

Design requirements

  • Long battery life of more than 10 years
  • Extremely low-noise analog signal chain for long detection range (10m – 15m)
  • Low settling time of amplifier stages
  • False trigger avoidance due to environmental changes
  • Ability to accurately detect and classify objects, such as human versus pet

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Block diagram

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Technical documentation

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Type Title Date
Analog design Journal Low-power sensor measurements: 3.3-V, 1-ksps, 12-bit, single-ended, single-suppl (Rev. B) PDF | HTML Sep 26, 2024
Circuit design Low-power sensor measurements: 3.3-V, 1-ksps, 12-bit, single-ended, dual-supply (Rev. B) PDF | HTML Sep 17, 2024
Technical article Detect. Sense. Control: Simplify building automation designs with MSP430™ MCUs PDF | HTML Aug 23, 2021
Application note Wireless Motion Detector With Sub-1 GHz SimpleLink™ Wireless MCU (Rev. C) May 10, 2021
Application note Extend Battery Life with <100 nA IQ Buck Converter Achieving <150 µV Voltage Rip (Rev. A) PDF | HTML May 7, 2021
More literature Techniques for PIR-based motion detection Dec 15, 2020
White paper The fundamentals of millimeter wave radar sensors (Rev. A) Aug 27, 2020
White paper Bringing intelligent autonomy to fine motion detection (Rev. A) Dec 20, 2018
Application brief Reduce False Triggers and Extend Battery Life in PIR Sensing Applications Mar 27, 2018
Application brief Ultra-Low Power Designs With the CC13x2 and CC26x2 Sensor Controller PDF | HTML Feb 27, 2018
Technical article A smarter world will arrive in waves PDF | HTML Jan 9, 2018
Technical article How ultrasonic technology improves convenience and performance in home automation PDF | HTML Oct 5, 2017
Technical article Bringing new intelligence to industrial applications with mmWave sensors PDF | HTML May 16, 2017
Application note Design of Ultra-Low Power Circuits for Battery-Powered Wireless PIR Motion Detec (Rev. A) May 12, 2017
Application note Cost-Optimized Opamp Window Comparator for Ultra-low Power PIR Motion Detectors Mar 6, 2017
Application brief Power Cycling an IoT System with a Nano-power System Timer Dec 5, 2016
Application note Precision Voltage Offset: When Does it Matter? (Rev. A) Nov 2, 2016
White paper Introduction to Time-of-Flight Camera (Rev. B) May 7, 2014

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