Microchip Technology, Inc. Interface Transceiver IC QT1101-IS48G

The QT1101-IS48G is a capacitive touch sensor IC designed for detecting touch or near-proximity on up to ten electrodes. It operates on a supply voltage range of 2.8V to 5.5V and features a low power mode that consumes approximately 40µA at 3V. The device employs patented charge-transfer technology, ensuring reliable performance with continuous self-calibration and automatic recalibration to prevent keys from becoming unresponsive. This sensor includes advanced features such as Adjacent Key Suppression (AKS) to minimize false detections from closely spaced keys, and spread spectrum operation for enhanced noise rejection. It supports a serial communication interface with automatic baud rate detection and can operate in both one-wire and two-wire modes. The QT1101-IS48G is suitable for various applications, including control panels, remote controls, and consumer electronics, making it a versatile choice for engineers looking to implement touch-sensitive interfaces in their designs.