Microchip Single Key Qtouch Capacitive Touch Sensor SOT-23-6 1.8V-5.5V
Microchip single key Qtouch capacitive touch sensor in SOT-23-6 package. Features 1-wire interface, 1.8V-5.5V supply, and self-calibration.
The Microchip Single Key Qtouch Capacitive Touch Sensor is a digital burst mode, charge-transfer sensor capable of detecting near-proximity or touch. It is specifically designed for human interfaces, incorporating all the necessary hardware and signal processing functions to provide stable sensing under a wide variety of changing conditions.
A standout feature is the 'max on' setting, which allows the key to re-calibrate and detect subsequent touches even when faced with an obstruction for a prolonged period. The sensor projects a touch or proximity field to several centimetres through any dielectric, including glass, plastic, stone, ceramic, and most kinds of wood. Furthermore, it can turn small metal-bearing objects into intrinsic sensors, making them responsive to proximity or touch.
Operation requires only a single low-cost capacitor. The device boasts patented spread-spectrum charge-transfer technology and increased moisture tolerance achieved through hardware design and firmware tuning. Additional processing features include self-calibration and noise filter signal processing, while key sensitivity can be easily set using a capacitor.
Key Specifications
- IC Interface Type: 1 Wire
- Number of Channels: 1
- Output Interface: 1 Wire
- Supply Voltage: 1.8V to 5.5V
- Sensor Package: SOT-23-6
- Operating Temperature: -40°C to 85°C
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