Description
The AS312 is a type of intelligent PIR sensor which integrates digital control circuit and body sensitive element in one electromagnetic shielding. The signal inputs from sensitive element to digital circuit via a high impedance differential. The digital circuit converts the input signal to 15bit ADC digital value. When the PIR signal above the selected threshold, there will be a REL output. The parameter of time are set by resistance to control the time delay of application continuous work. All signals are processed digitally.
Features
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Digital Signal Processing
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Schmidt REL output
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Differential inputs
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Second order Butterworth low-pass filter, removing other higher frequency interference
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High supply rejection, High immunity to RFI
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Output time adjustable, Schmitt REL output for sensitivity
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Lowsupply voltage, Low current consumption
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