Overview
The product is a type of intelligent PIR sensor which integrates digital circuit and sensitive element in a hermetically sealed package. It interfaces directly with up two conventional PIR sensors via a high impedance differential input. The PIR signal is converted to a digital value on chip. A REL output indicates whenever the PIR Signal is above the selected threshold. The parameters for timing is set by connecting the corresponding inputs to DC voltages. All signal processing is performed digitall
Feature
★ Digital signal processing,no drift and aging
★ 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
★ Ontime 2s
★ Sensitivity 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 | ||
SENS 32 Level | Adjustable | |||||
Inputs SENS | ||||||
Input voltage range | 0 | VDD1/2 | V | Adjustable between 0V and VDD/2 | ||
Input leakage current | -1 | 1 | μA | |||
Oscillator and Filter | ||||||
LPF cutoff frequency | 7 | Hz | ||||
HPF cutoff frequency | 0.44 | Hz | ||||
On chip oscillator frequency | FCLK | 64 | kHz | |||
Tel.: +86-755-82594732
E-mail: sales.sz@nysenba.com
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