TIDA-010027

Low noise PIR signal chain reference design with less false alarm for line powered motion detector

TIDA-010027

Design files

Overview

This reference design demonstrates how to design a low noise analog signal chain for PIR-based motion detection subsystems in line-powered applications resulting in longer detection range. This reference designs offers design theory, component selection, and circuit simulations for noise, settling time, stability and frequency response. Circuit modifications that help to meet design goals, such as faster power-on settling time and reduced false trigger due to some environmental sources in indoor and outdoor conditions, are also discussed.

Features
  • Faster power-on settling time < 25 sec
  • Reduced false trigger: Fifth order roll-off at lower cut-off and forth order roll-off at higher cut-off
  • Circuit bandwidth: 0.3 Hz to 6.5 Hz
  • Referred to output noise < 26.4 mV peak-peak
  • Phase margin > 72º for all amplifier stages

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.

TIDUEH9.PDF (2851 K)

Reference design overview and verified performance test data

TIDRXQ5.PDF (18 K)

Detailed schematic diagram for design layout and components

TIDRXQ6.PDF (96 K)

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

Products

Includes TI products in the design and potential alternatives.

General-purpose op amps

TLV9061Single, 5.5-V, 10-MHz, RRIO operational amplifier for cost-optimized applications

Data sheet document-pdfAcrobat PDF open-in-new HTML
General-purpose op amps

TLV9062Dual, 5.5-V, 10-MHz operational amplifier

Data sheet document-pdfAcrobat PDF open-in-new HTML
General-purpose op amps

TLV9064Quad, 5.5-V, 10-MHz, RRIO operational amplifier for cost-optimized applications

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Design guide Low-Noise PIR Signal Chain Reference Design With Less False Alarm Nov. 19, 2018

Related design resources

Design tools & simulation

SIMULATION TOOL
TINA-TI SPICE-based analog simulation program

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​

Videos