QT100-ISG 1-Key SOT-23-6 IC
Manufacturer: Atmel / Quantum Research
This product has been discontinued.
Limited stock. Please call for quantities.
The QT100 charge-transfer ('QT') touch sensor is a self-contained digital IC capable of detecting near-proximity or touch. It will project a touch or proximity field through any dielectric like glass, plastic, stone, ceramic, and even most kinds of wood. It can also turn small metal-bearing objects into intrinsic sensors, making them responsive to proximity or touch. This capability, coupled with its ability to self-calibrate, can lead to entirely new product concepts. It is designed specifically for human interfaces, like control panels, appliances, toys, lighting controls, or anywhere a mechanical switch or button may be found.
Power consumption is less than 500µA in most applications when running in Fast response mode. This typically drops to 5-10µA at 2V Vdd in Low Power mode, depending on the burst length. In most cases the power supply need only be minimally regulated; for example, by Zener diodes or an inexpensive three-terminal regulator. The QT100 only requires a common inexpensive X7R ceramic capacitor in order to function.
The QT100's Reduced Instruction Set Computer (RISC) core employs signal processing techniques pioneered by Quantum; these are specifically designed to make the device survive real-world challenges, such as 'stuck sensor' conditions and signal drift.
The Quantum-pioneered HeartBeat™ signal is also included, allowing a microcontroller to monitor the health of the QT100 continuously, if desired. By using the charge transfer principle, the IC delivers a level of performance clearly superior to older technologies in a highly cost-effective package.
The E100S evaluation board has been developed to show the capabilities of the QT100. The board demonstrates the chip in a typical application; a simple through-panel single-switch. The E100S illustrates how a QTouch solution requires only a very simple circuit design and a minimum of external components. See the downloads table below for a schematic diagram of the board.
The kit includes the board and 2 additional QT100 ICs.