QT1080

APPLICATIONS

! Pointing devices

! Remote controls

! PC peripherals

! Television controls

! MP3 players

! Mobile phones

QT1080 charge-transfer (’QT’) QTouch IC is a self-contained digital controller capable of detecting near-proximity or touch on

up to eight electrodes. It allows electrodes to project independent sense fields through any dielectric such as glass or

plastic. This capability coupled with its continuous self-calibration feature can lead to entirely new product concepts, adding

high value to product designs. 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.

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

changing a corresponding external Cs capacitor.

AKS™ Adjacent Key Suppression (patent pending) 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.

Spread-spectrum burst technology provides superior noise rejection. These devices also have a SYNC/LP pin which allows for

synchronization with additional similar parts and/or to an external source to suppress interference, or, a Low Power (LP) mode

which conserves power.

By using the charge-transfer principle, this device delivers a level of performance clearly superior to older technologies yet is

highly cost-effective.

This part is available in both 32-QFN and 48-SSOP RoHS compliant packages.

Copyright © 2004-2006 QRG Ltd

QT1080 R11.06/0806

QT1080-IS48G

QT1080-ISG

-40ºC to +85ºC

48-SSOP

32-QFN

AVAILABLE OPTIONS

1

23

4

5

6

7

8

24 23 22 21 20 19 18 17

9

10

11

12

13

14

15

16

32

31

30

29

28

27

26

25

SN1K

SNS2

SNS2K

SNS3

SNS3K

SNS4

SNS4K

SNS5

OUT_6

OUT_5

OUT_4

OUT_3

OUT_2

OUT_1

OUT_0

QT1080

32-QFN

OUT_7