EKMB1101111
Overview
The EKMB1101111 is an ultra-low power Passive Infrared (PIR) motion sensor from Panasonic's PaPIRs WL series. It features an integrated amplifier and comparator, providing a digital output signal directly to a microcontroller when infrared movement is detected within its 5-meter range. With a standby current consumption of only 1 microamp, it is specifically designed for battery-powered IoT devices and power-sensitive building automation systems.
Why Choose This Part
The sensor's primary advantage is its extremely low current consumption of 1 microamp, which significantly extends battery life compared to standard PIR solutions. The fully integrated design eliminates the need for external op-amps or complex analog circuitry, reducing PCB footprint and BOM cost. Additionally, its digital output simplifies firmware development by providing a straightforward logic high/low trigger.
Applications
Key Specifications
Getting Started
Integration is straightforward; connect the VDD pin to a 2.3V to 4V power source and the digital output pin to a GPIO interrupt on your microcontroller. To minimize false triggers, ensure the sensor is mounted away from direct sunlight or rapid thermal changes such as air conditioning vents. Engineers should implement a software-based debounce or delay to manage the sensor's internal trigger timing effectively.
