The AT42QT2120-SUR is a capacitive touch sensor IC part designed for use in human-machine interface applications. It features a single-key touch sensor with a high sensitivity, making it ideal for a variety of touch-sensitive applications. The IC has a low power consumption, making it suitable for battery-operated devices. It has a built-in noise filtering algorithm that helps to improve the signal-to-noise ratio and reduce false triggering. The IC can be easily configured through its I2C interface, allowing for flexibility and customization. It also has a configurable automatic recalibration feature that ensures stable performance over time. Overall, the AT42QT2120-SUR is a reliable and versatile touch sensor IC that offers high sensitivity, low power consumption, and easy customization for a variety of applications
