Pyroelectric infrared control IC S9803 circuit diagram

Published:2014/4/21 20:18:00 Author:lynne | Keyword: Pyroelectric infrared control IC S9803 circuit diagram, S9803 | From:SeekIC

Pyroelectric infrared sensor for its anti-interference, high detection sensitivity, wide humidity range, etc. are used in the Pan-theft alarm, industrial and production of automatic doors, sensor lights, automatic valve and so on. > > >S9803 is an integrated circuit designed for pyroelectric infrared sensor supporting the design, the use of CMOS technology. With high performance, consistency, and the external circuit is simple to install and easy to test. Similar products is more complete functional devices. S9803 is a prominent feature: High (1) sensitivity, built-in two-stage amplifier circuit and the gain can be transported humidity compensation circuit. This circuit can suppress infrared interference as warm air stream generated by the false alarm rate, the detection distance of 10m or more. [2) Control time is adjustable. (3) to drive the output thyristors or relays. (4) built-in regulator 3.1V. (5) External CDS sensor. Daytime suppress output. (6) Operating Voltage 4.0 - 5.5V. Current 1mA. (7) For AC power supply control circuit design zero crossing detection and control, so that the load on and off the accused are at the zero crossing of the AC. This not only reduced the impact of the load current, while also eliminating the interference of the power switching device. Reduce pollution power beam. S9803 is the oscillator, counter, PIP detection, signal amplification, clock, zero-crossing detection, temperature compensation, and output control circuit. >



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