PM2.5 and PM10 Particle Sensor Analog Front-End for Air Quality Monitoring Reference Design


Design files


TIDA-00378 provides an analog front-end for measuring PM2.5 and PM10 particle matter. The reference design detects light scattered by particles suspended in air. A sample software algorithm is provided to convert the analog output of the design into a particle size and concentration measurement. Test result data for cigarette smoke, Arizona dust and mulberry pollen is provided along with all software and hardware design files.

  • Analog front-end design for PM2.5 (<2.5 µm) and PM10 (<10 µm) particle detection and count
  • Dust measurement range from 340 x 103 to 991 x 103 pcs/ft3 (12 to 35 pcs/cm3) at 75% accuracy
  • Zero-volt bias to minimize photodetector noise and stabilize performance over temperature
  • Instrumentation amplifier topology to reject external noise sources
  • Low noise, low-input bias current and low offset op-amps with rail-to-rail output to maintain high SNR and increase output dynamic range
  • Tested against Arizona dust, mulberry pollen and cigarette smoke using adapted ANSI/AHAM AC-1-2013 test standard
  • Full algorithm source code for PM2.5 and PM10 calculation for customization and porting
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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.

TIDUB65C.PDF (1584 K)

Reference design overview and verified performance test data

TIDRJ21A.PDF (565 K)

Detailed schematic diagram for design layout and components

TIDRJ22A.PDF (119 K)

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

TIDRJ23.PDF (132 K)

Detailed overview of design layout for component placement

TIDRJ25A.ZIP (1420 K)

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


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

TIDRJ24.PDF (847 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Difference amplifiers

INA132Low Power, Single-Supply Difference Amplifier

Data sheet: PDF
Precision op amps (Vos<1mV)

OPA2320Dual, precision, zero-crossover, 20-MHz, 0.9-pA Ib, RRIO, CMOS operational amplifier

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA320Precision, zero-crossover, 20-MHz, 0.9-pA Ib, RRIO, CMOS operational amplifier

Data sheet: PDF | HTML

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Technical documentation

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Type Title Date
* Design guide PM2.5/PM10 Particle Sensor Analog Front-End for Air Quality Monitoring Design (Rev. C) May 11, 2016
Technical article Air quality monitors and smoke detectors put on a new face Aug. 04, 2016
Technical article Trends in building automation: connected sensors in safety and security Jul. 20, 2016

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