The QT118H charge-transfer (“QT’”) touch sensor is a self-contained digital IC capable of detecting near-proximity or touch. It will project a sense field through almost any dielectric, like glass, plastic, stone, ceramic, and most kinds of wood. It can also turn small metal-bearing objects into intrinsic sensors, making them respond to proximity or touch. This capability coupled with its ability to self calibrate continuously can lead to entirely new product concepts.

● Less expensive than many mechanical switches
● Projects a ‘touch button’ through any dielectric
● Turns small objects into intrinsic touch sensors
● 100% autocal for life - no adjustments required
● Only one external part required - a 1¢ capacitor
● Piezo sounder direct drive for ‘tactile’ click feedback
● LED drive for visual feedback
● 3V 20µA single supply operation
● Toggle mode for on/off control (strap option)
● 10s or 60s auto-recalibration timeout (strap option)
● Pulse output mode (strap option)
● Gain settings in 3 discrete levels
● Simple 2-wire operation possible
● HeartBeat™ health indicator on output

APPLICATIONS -
● Elevator buttons
● Toys & games
● Access systems
● Pointing devices
● Appliance control
● Security systems
● Light switches
● Industrial panels