QT60168, 248, 326, 486 QMatrix™ Touch Sensor ICs

16 to 48 Keys with One Chip

See also: QT60160 / QT60240, low-cost QMatrix parts designed for mobile applications.

QT60000 family QMatrix™ QT chips sense 'glass-touch' on up to 48 keys, using passiv electrodes patterned on any PCB. The cost per key of this family is very low, and the circuit and key layouts are compatible with inexpensive single-sided PCB materials like FR-2 and CEM-1. The electrode board can be bonded to the interior of a glass or plastic panel to create 'glass touch' keys in almost any kind of product.

QMatrix keys will work through any non-conductive material, up to 5 cm thick or even more. Key sizes, shapes and placement are almost entirely arbitrary and can be mixed within a panel; the QMatrix devices will auto-calibrate all keys, even in mixed-key designs. The devices use serial communications to allow a host MCU to modify sensitivity and sensing behavior to suit almost any situation. These parts also feature patent-pending Adjacent Key Suppression (AKS™) to prevent cross-detection on closely spaced keys, and to suppress water film effects.

QMatrix devices are designed for control panels in home appliances, A/V equipment, keyboards, portable instruments, machine tools, or similar products; they permit sealed, watertight panels immune to humidity, temperature, dirt, or physical deterioration. All contain Quantum-pioneered adaptive self-calibration, drift compensation, and digital filtering to make sensing adaptable, robust, and survivable.

Unlike some other technologies, QMatrix devices do not require one IC per key. All use a 1-chip design plus a few inexpensive passive parts.

Selection Table

Evaluation Board E6248 24-Key Board

Designed for the evaluation and development of applications using the QT60168 or QT60248 ICs.

The E6248 board allows you to experiment and develop your matrix application using Quantum's QMatrix™ range of ICs. In minutes you can be experimenting with QT matrix sensing through the material of your choice.

The included sample matrix panel can be adhered to the back of almost any panel. These boards include a wide variety of key sizes and shapes.

Evaluation Board E6486 48-Key Board

Designed for the evaluation and development of applications using the QT60326 or the QT60486 ICs.

The E6xx boards allow you to experiment and develop your matrix application using Quantum's QMatrix™ range of ICs. In minutes you can be experimenting with QT matrix sensing through the material of your choice.

The included sample matrix panel can be adhered to the back of almost any panel. These boards include a wide variety of key sizes and shapes.

QmBtn™ software

QmBtn™ software for Windows allows you to observe the output from these boards in real time and lets you permanently reprogram key sensitivity on a key-by-key basis.

Please contact us for price and availability information.

Ordering Information

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‡ 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