Low-noise and long-range PIR sensor conditioner circuit
CIRCUIT060004
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical Documents

Support & Training

Order Now


Key Document

Description

This two stage amplifier design amplifies and filters the signal from a passive infrared (PIR) sensor. The circuit includes multiple low–pass and high–pass filters to reduce noise at the output of the circuit to be able to detect motion at long distances and reduce false triggers. This circuit can be followed by a window comparator circuit to create a digital output or connect directly to an analog–to–digital converter (ADC) input.

Features
  • Single 5V Supply 
  • Passes frequencies between 0.7Hz - 10Hz 
  • AC Gain: 90dB

Technical Documents
Application notes (5)
Title Type Size (KB) Date
PDF 846 14 Nov 2019
PDF 440 24 Oct 2019
PDF 192 30 Dec 2018
PDF 479 12 May 2017
PDF 115 06 Mar 2017
User guides (5)
Title Type Size (KB) Date
PDF 2851 19 Nov 2018
PDF 8350 16 Oct 2017
PDF 3842 28 Feb 2017
PDF 4402 15 Dec 2016
PDF 3439 25 Oct 2016
Solution guides (1)
Title Type Size (KB) Date
PDF 11259 18 Feb 2019

Software (1)

Development Tools (2)

Name Part Number Tool Type
Analog engineer's calculator  ANALOG-ENGINEER-CALC  Calculation Tools 
SPICE-based analog simulation program  TINA-TI  Circuit Design & Simulation 

TI Devices (6)

Part Number Name Product Family
MSP430FR2310  16 MHz Ultra-Low-Power Microcontroller - 2 KB FRAM, 1 KB SRAM, 16 IO, 8ch 10-bit ADC, OpAmp, TIA  Microcontrollers (MCU) 
MSP430FR2311  16 MHz Ultra-Low-Power Microcontroller - 4 KB FRAM, 1 KB SRAM, 16 IO, 8ch 10-bit ADC, OpAmp, TIA  Microcontrollers (MCU) 
MSP430FR2353  24MHz 105C ULP Microcontroller With 16 KB FRAM, 2 KB SRAM, 44 IO, 12-bit ADC, 12-bit DACs, OpAmp/PGA  Microcontrollers (MCU) 
MSP430FR2355  24MHz 105C ULP Microcontroller With 32 KB FRAM, 4 KB SRAM, 44 IO, 12-bit ADC, 12-bit DACs, OpAmp/PGA  Microcontrollers (MCU) 
OPA376  Precision (0.025mV), low noise (7.5nV/rtHz), low quiescent current (760uA) op amp  Operational amplifiers (op amps) 
TLV9062  2-Channel, 10-MHz, low-noise, RRIO, CMOS op amp for cost-sensitive systems  Operational amplifiers (op amps) 

Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective 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 visit our Support page.

Technical articles