DIODES Incorporated Sensor and Detector Interfaces PT8A2647PE

The PT8A2647PE is a CMOS LSI chip designed for automatic PIR lamp control, suitable for both triac and relay applications. It operates at a typical voltage of 5V with an average supply current of 120µA. The device features a two-stage operational amplifier for filtering, a built-in noise rejection circuit, and an on-chip regulator. It supports adjustable output duration and includes an override function, allowing for ON/AUTO/OFF mode selection via the MODE pin. This chip is capable of detecting infrared variations caused by human motion, converting these variations into voltage changes to control lighting. It can operate with AC voltages of 220V/50Hz and 110V/60Hz, and includes an auto-reset feature if the zero-crossing signal is absent for more than three seconds. The PT8A2647PE also incorporates a quick check mode for installation purposes and has a warm-up time of 40 seconds. Its pin configuration allows for easy integration into various applications, making it a versatile choice for engineers looking to implement PIR sensor technology in their projects.