Overview
NS612 is a type of PIR sensor which integrates a digital control circuit and a human detection sensor in an electromagenetic shielding housing.The human body detection sensor couples the sensed human movement signal to the digital intelligent integrated circuit chip through a very high impedance differential input circuit, and the digital intelligent integrated circuit converts the signal into an ADC digital signal.When the PIR signal exceeds the selected digital threshold, there is a timed REL level output. OEN enable terminal enables REL output or automatic control through light sensor. Sensitivity and time parameters are set through a partial voltage resistor. All the signal processing is done on the chip.
Feature
★ Digital signal processing
★ High power supply rejection ratio, anti-radio frequency
interference(mobile phone,WiFi,etc.)
★ A second-order Butterworth bandpass filter with built-in
infrared sensor to shield input interference at other
frequencies
★ Sensitivity,Ontime, and light sensor Schmitt REL output.
★ Ontime adjustable
★ Good stability and effective suppression of repeated
malfunctions
★ Low power consumption and simple application circuit
Datasheet
1.Absolute Maximum Ratings
Electrical characteristics(beyond those listed below may cause permanent damage to the device. Exposure to absolute maximum ratings may affect the device reliability. )
Parameter | Symbol | Min | Max | Unit | Remarks |
Operating Temp | TST | -30 | 70 | ℃ | |
Current into any pin | Into | -100 | 100 | mA | |
Storage Temp | TST | -40 | 80 | ℃ |
2. Operating Conditions (T=25°C, Vdd=3V，unless stated otherwise)
Parameter | Symbol | Min | Type | Max | Unit | Remarks |
Regular voltage | VDD | 2.2 | 3 | 3.7 | V | |
Supply current | IDD | 9 | 9.5 | 11 | μA | |
Sensitivity threshold | VSENS | 90 | 2000 | μV | ||
Detective Wavelength | λ | 5 | 14 | um | ||
Outputs REL | ||||||
IOL | 10 | mA | VOL<1V | |||
Output current high | IOH | -10 | mA | VOH>(VDD-1V) | ||
Low REL output locking time | TOL | 2 | s | Non-adjustable | ||
High REL output delay time | TOH | 2 | 3600 | s | ||
Inputs SENS, ONTIME | ||||||
Input voltage range | 0 | VDD1/2 | V | Adjustable between 0V and VDD/2 | ||
Input leakage current | -1 | 1 | μA | |||
Input OEN | ||||||
Input low voltage | VIL | 0.8V-1.2V (Hysteresis zone) | 0.8 | V | Voltage threshold from high to low | |
Input high voltage | VIH | 1.2 | V | Voltage threshold from low to high | ||
Input current | II | -1 | 1 | μA | VSS<VIN<VDD | |
Oscillator and Filter | ||||||
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