E910.62
Dual Channel PIR Detector Signal Processor IC, with temperature measurement
GENERAL DESCRIPTION
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.
APPLICATIONS
- Quad element digital PIR detectors
- Gas sensors
FEATURES
- 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
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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