SNLA399
July 2022
OPA607
Abstract
Trademarks
1
Introduction to Particulate Matter Sensors
1.1
Optical Particulate Matter Measurement Instruments
1.1.1
Photometer
1.1.2
Optical Particle Counter
1.1.2.1
Determination of Size and Concentration
1.1.2.1.1
Size
1.1.2.1.2
Concentration
1.2
Architecture of Optical PM Sensor
2
Single Op Amp Based Analog Front End
2.1
Frequency Response
2.2
Noise
2.3
Data Acquisition
2.3.1
Minimum Current Calculations
2.3.2
Maximum Current Calculations
3
Optimizing for Different Photodiode Currents
4
Summary
1.1.2.1
Determination of Size and Concentration