Overview
BX604 is a pyroelectric infrared sensor that integrates a digital intelligent control circuit and a human detection sensor in an electromagnetic 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, which converts the signal into an ADC digital signal, and when the PIR signal exceeds the selected digital threshold, there is a timed REL level output. The OEN enable allows the REL output to be automatically controlled via a light sensor. The sensitivity and time parameters are set by a voltage divider resistor. All signal processing is done on the chip.
Feature
★ Digital signal processing
★ Low voltage,Low power consumption ,Short warm-up time
★ 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
★ 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 |
| 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 ONTIME | ||||||
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 | ||||
| Enable OEN | ||||||
| Low input voltage(off) | VIL | 在0.8v-1.2v之间为迟滞区域 | 0.8 | V | OEN电压高到低的阈值电平 | |
| High input voltage(on) | VIH | 1.2 | V | OEN电压低到高的阈值电平 | ||
| Current input | II | -1 | 1 | μA | VSS<VIN<VDD | |
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