E931.06
Single channel PIR Detector Signal Processor IC
GENERAL DESCRIPTION
The single channel, E931.06 integrated circuit is designed to be assembled inside a IR windowed 3 pin detector can or ceramic enclosure. The IR sensitive pyro-ceramic element is bonded directly to the input pads of the integrated circuit.
A 14 bit digital voltage value 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).
A 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.
Multiple detectors can easily be read simultaneously by a single micro controller.
APPLICATIONS
- Dual element digital PIR detectors
FEATURES
- 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
DATASHEET
APPLICATION CIRCUITS
- Evaluation module M951
- Digital PIR USB Interface
- Serial interfaced motion sensor evaluation module
- Schematic with PIC18F2321 that read from Digital PIR detector evaluation board
- PCB and application description
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