NSA3182 is a highly integrated control chip for pyroelectric infrared sensor (PIR). A single NSA3182 integrates all the necessary components for pyroelectric passive infrared mobile detection, and the analog front end can be directly connected to the analog PIR detector via AC coupling. Built-in 3V output LDO supplies power to the PIR detector. Built-in high-precision analog-to-digital converter can convert the detector signal into digital signal. The digital engine can detect the movement of human body, reduce the interference from external and support binary output. The sensor sensitivity threshold and alarm maintenance time can be adjusted by an external resistor.
Suitable for PIR external signal conditioning applications, with SO8 package
Sensitivity and response time adjustable through an external resistor
Built-in LDO for direct power supply with high voltage of 12V for intelligent lighting applications
Low power consumption, static current 13uA