qt160 Quantum Research Group, qt160 Datasheet

qt160

Manufacturer Part Number

qt160

Description

6 Key Charge-transfer Qtouch? Sensor Ic

Manufacturer

Quantum Research Group

Datasheet

1.QT160.pdf (12 pages)

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APPLICATIONS

QT160 / QT161 charge-transfer (“QT’”) QTouch ICs are self-contained digital controllers capable of detecting near-proximity or

touch from up to 6 electrodes. They allow electrodes to project 6 independent sense fields through any dielectric like glass,

plastic, stone, ceramic, and wood. They can also make metal-bearing objects responsive to proximity or touch by turning them

into intrinsic sensors. These capabilities coupled with continuous self-calibration can lead to entirely new product concepts,

adding high value to product designs.

Each of the 6 channels operate independently of the others, and each can be tuned for a unique sensitivity level by simply

changing its sample capacitor value.

The devices are designed specifically for human interfaces, like control panels, appliances, gaming devices, lighting controls,

or anywhere a mechanical switch or button may be found; they may also be used for some material sensing and control

applications. The option-selectable toggle mode permits on/off touch control, for example for light switch replacement.

The devices require only a common inexpensive capacitor per channel in order to function. The QT160 also offers the unique

adjacent key suppression (AKS™, patent pending) feature which suppresses touch from weaker responding keys and allows

only a dominant key to detect, for example to solve the problem of large fingers on tightly spaced keys.

In most cases the power supply need only be minimally regulated, for example by an inexpensive 3-terminal regulator.

The RISC core of these devices employ 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.

By using the charge transfer principle, these parts deliver a level of performance clearly superior to older technologies yet are

highly cost-effective.

6 completely independent touch circuits

Individual logic outputs per channel (active high)

Projects prox fields through any dielectric

Only one external capacitor required per channel

Sensitivity easily adjusted on a per-channel basis

100% autocal for life - no adjustments required

3-5.5V, 5mA single supply operation

Toggle mode for on/off control (strap option)

10s, 60s, infinite auto-recal timeout (strap options)

AKS™ Adjacent Key Suppression (QT160)

Less expensive per key than many mechanical switches

Eval board with backlighting - p/n E160

Pb-Free package available (QT160-ASG)

PC Peripherals

Backlighted buttons

-40

C to +70

C to +105

6 K

Appliance controls

Security systems

HARGE

QT160-D

QT161-D

AVAILABLE OPTIONS

DIP-28

QProx™ QT160 / QT161

-T

RANSFER

Access systems

Pointing devices

QT160-ASG

SSOP-28

QT160-AS

QT161-AS

NOTE: Pinouts are not the same!

OUCH

Pb-Free

Notes

™ S

QT160/161 1.07/0904

Instrument panels

Gaming machines

ENSOR

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