This document provides information on a product still in production but not recommended for new designs, called QST108 Capacitive Touch Sensor Device, which features 8 keys with individual key state outputs or I2C interface. The product has several characteristics and features, including patented charge-transfer design, support for up to 8 independent QTouch™ keys, individual key state outputs or I2C interface, fully debounced results, patented AKS™ Adjacent Key Suppression, self-calibration and auto drift compensation, spread-spectrum bursts to reduce EMI, up to 5 general-purpose outputs, and ECOPACK® (RoHS compliant) package. This device is specifically designed for human interfaces and front panels in various applications such as PC peripherals, home entertainment systems, gaming devices, lighting and appliance controls, remote controls, etc. QST devices aim to replace mechanical switching/control devices, resulting in lower customer service costs, reduced manufacturing costs, and increased product lifetime.
The QST108 is a capacitive touch sensor device designed for human interfaces and front panels. It supports up to 8 independent QTouch™ keys with either individual key state outputs or an I2C interface, utilizing Quantum's patented charge-transfer technology.
Key features include patented AKS™ Adjacent Key Suppression, self-calibration, auto drift compensation, and spread-spectrum bursts to reduce EMI. The device is available in an ECOPACK® LQFP32 package and operates with a supply voltage of 2.4V to 5.5V.
| Operating supply voltage | 2.4 to 5.5V |
|---|---|
| Operating temperature range | -40° to +85° C |
| Package type | LQFP32 (7x7 mm) |
| Supported interfaces | Individual key state outputs or I2C Interface |
No, this device is not recommended for new designs.
It uses Quantum's patented charge-transfer (QProx™) capacitive technology.