QT1106-ISG Touch Button / Touch Slider IC

For Charge-Transfer Capacitive Touch Sensing

QT1106 charge-transfer ('QT') QTouch™ IC is a self-contained, patented charge-transfer capacitive controller capable of detecting near-proximity or touch on up to seven electrodes and a wheel. It allows electrodes to project sense fields through any dielectric such as glass or plastic. These electrodes are laid out as a scroller (e.g. a wheel or slider) plus seven additional independent keys. Each key channel can be tuned for a unique sensitivity level by simply changing a corresponding external Cs capacitor, whereas the wheel/slider's sensitivity can be changed dynamically through SPI commands.

The wheel/slider uses a simple, inexpensive sensing element between three connection points. The QT1106 can report a single rapid touch anywhere along the sense elements, or it can track a finger moving along the wheel/slider's surface in real time.

The device is designed specifically for human interfaces, like control panels, appliances, gaming devices, lighting controls, remote controls, or anywhere a mechanical wheel, slider, or switch may be found.

Patented AKS™ Adjacent Key Suppression suppresses touch from weaker responding keys and only allows a dominant key to detect; for example, to solve the problem of large fingers on tightly spaced keys or buttons in the middle of a wheel.

By using the charge-transfer principle, this device delivers a level of performance clearly superior to older technologies yet is highly cost-effective. Spread-spectrum burst technology provides superior noise rejection. The device also has a Sync mode which enables synchronization with additional similar parts and/or to an external source to suppress interference, and low power modes which conserve power.

Evaluation Board

The QT1106 can be assessed using Quantum's E1106 evaluation kit. The kit provides a convenient reference design and allows the user to visualize discrete touch buttons, dials and sliders using interchangeable QWheel and QSlide touch panels. The device comes fully assembled and tested.

Ordering Information

Download a faxable order form

‡ Price Bands (100k drop price indications, in US$, FOB UK)
A: under $0.50 | B: $0.50 - $0.80 | C: $0.80 - $1.50 | D: over $1.50