PROD Model:BS412
Window Size:3*4mm
Output Signal:High and low level output
Sensing Distance:12M(Lens SB-F-02)
See lens selection for different distances
Sensing Angle:120°（horizontal direction）
Working Voltage: 2.2-3.7V
Static Power Consumption: <12uA
The BS312 is a digital pyroelectric infrared (PIR) motion sensor developed by Senba Sensing. The BS312 is designed for human body motion detection and provides a stable digital output signal. The BS312 delivers reliable sensing performance with good resistance to interference in typical indoor environments. The BS312 is widely used in motion-activated lighting, security alarm systems, smart home products, sensor lamps, and other automatic control applications.
Power supply voltage range 1.6-5.5V
Programmable detection standard and working mode
Digital signal processing
Ultral low power consumption
Power supply voltage measurement
Temperature measurement
Fast and stable power-on
1.Technical data
| Description | Symbol | Min | Typical | Max | Unit | Remarks |
| VDD voltage | VDD | -0.3 | 5.5 | V | 25℃ | |
| Analog pin voltage | -0.3 | VDD+0.3 | V | 25℃ | ||
| Digital pin voltage | -0.3 | VDD+0.3 | V | 25℃ | ||
| Storage temperature | -30 | 80 | ℃ |
2.Operating Conditions ( TAMB = +25℃ Typical VDD=3V)
| Description | Conditions | Symbol | Min | Typical | Max | Unit | ||||||
| Operating temperature | ||||||||||||
| Operating temperature range | -20 | +70 | ℃ | |||||||||
| Operating Voltage | ||||||||||||
| Supply voltage | VDD | 2.2 | 3.7 | V | ||||||||
| Supply current | ||||||||||||
| Supply current, VPIR regulator on | VDD=3V, no load | IDD1 | 6 | 8 | µA | |||||||
| Supply current, VPIR regulator off | VDD=3V, no load | IDD | 3 | 5 | µA | |||||||
| Input parameter SERIN | ||||||||||||
| Input low voltage | VIL | 0.2 | VDD | |||||||||
| Input high voltage | VIH | 0.8 | VDD | |||||||||
| Input Current | VSS<VIN<VDD | IIN | -1 | 1 | µA | |||||||
| Digital clock low time | tL | 200 | ns | |||||||||
| Digital clock high time | tH | 200 | ns | |||||||||
| Data Bit Write Time | tBW | 2/FCLK | 5/FCLK | µs | ||||||||
| Write timeout | tWL | 16/FCLK | µs | |||||||||
| Data input and output pins INT/DOCI | ||||||||||||
| Input low voltage | VIL | 0.2 | VDD | |||||||||
| Input high voltage | VIH | 0.8 | VDD | |||||||||
| Output current high | VOL>(VDD-1V) | IOH | -200 | µA | ||||||||
| Output current low | VOL<1V | IOL | 200 | µA | ||||||||
| Input capacitance | 5 | pF | ||||||||||
| Force read setup time | TFR | 2/FCLK | ||||||||||
| Interrupt clear time | tCL | 2/FCLK | ||||||||||
| Digital clock low time | tL | 200 | tRA | ns | ||||||||
| Digital clock high time | tH | 200 | ns | |||||||||
| Read timeout | tRA | 4/F | µs | |||||||||
| Description | Conditions | Symbol | Min | Typical | Max | Unit | ||||||
| Supply voltage measurement | ||||||||||||
| Resolution | 590 | 650 | 720 | µV/count | ||||||||
| ADC output range | 2^13 | 2^14-511 | Counts | |||||||||
| Temperature measurement (requires single point calibration) | ||||||||||||
| Resolution | 80 | Counts/K | ||||||||||
| ADC output range | 511 | 2^14-511 | Counts | |||||||||
| Value at 300K | 6700 | 8200 | 9900 | Counts | ||||||||
| Oscillator and Filter | ||||||||||||
| Filter cutoff frequency | FCLK * 1.41 / 2048 / PI | Hz | ||||||||||
| HPF cutoff frequency | FCLK /16 * 1.41 / 2048 / PI | Hz | ||||||||||
| On-chip oscillator frequency | FOSC | 56 | 64 | 74 | kHz | |||||||
| System clock | FCLK | FOSC/2 | ||||||||||
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Senba Sensing Technology is a professional sensor supplier covering r&d, manufacturing, sales and service. The main products include PIR sensors, light sensor, infrared flame sensors, NDIR temperature sensors, differential pressure sensors, etc., mainly used in smart home, security, fire protection, industrial control and other fields.
Senba Sensing Technology was founded in 2005 and listed on Gem board of Shenzhen Stock Exchange in 2017. With more than 18 years of professional experience in the field of sensor manufacturing, Senba Sensing Technology is the leading enterprise in the field of infrared sensors, visible light sensors in China, with the first market share and an annual production of 524.26 million sensors. With the concept of "Intelligent Sensing, Intelligent Life", we strive to build a world-class sensor brand.
