microsystems on silicon


Dual Channel PIR Detector Signal Processor IC, with temperature measurement


The dual channel , E910.62 integrated circuit is designed to be assembled inside a IR windowed 3 pin detector can or ceramic package. A IR sensitive quad pyro ceramic element is bonded directly to the four input pads of the integrated circuit.

A 14 bit digital voltage value per channel as well as a 14 bit temperature register value is available to be read by an external micro controller via a single wire serial interface (DOCITM). The 14 bit resolution is achieved with a decimation filter combined with a second order Butterworth low pass filter.

A interrupt is generated every 15ms to signal that a data word is available from the detector. It is also possible to read values from the detector with time intervals generated by the micro-controller.

A single digital pin on the micro controller is used to read the three 14 bit registers from the detector IC. Multiple detectors can easily be read simultaneously by a single micro controller.


  • Quad element digital PIR detectors
  • Gas sensors


  • Dual differential, independent signal processing channels
  • Direct connection to the pyro ceramic element
  • Digital Signal Processing (DSP)
  • Differential PIR input
  • Single wire serial interface (DOCITM)
  • Operating voltage down to 2.7V
  • High dynamic range
  • High Signal to Noise ratio
  • High power supply rejection