Low-noise and long-range PIR sensor conditioner circuit CIRCUIT060004 (ACTIVE)
- Low-noise and long-range PIR sensor conditioner circuit
(PDF 192 KB)
30 Dec 2018
Simulation for Low-noise and Long-Range PIR Sensor Conditioner Circuit
(ZIP 329 KB)
05 Jul 2018
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.