QT1101 Datasheet, PDF (1/16 Pages) Quantum Research Group – 10 KEY QTOUCH SENSOR IC

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QT1101
10 KEY QTOUCH™ SENSOR IC
" Patented charge-transfer (‘QT’) design
" Ten independent QT sensing fields (keys)
" 2.8V ~ 5.5V single supply operation
" 40µA current typ @ 3V in 360ms LP mode
" 100% autocal for life - no adjustments required
" Serial one or two wire interface with auto baud rate
" Fully debounced results
" Patented AKS™ Adjacent Key Suppression
" Spread spectrum bursts for superior noise rejection
" Sync pin for excellent LF noise rejection
" ‘Fast mode’ for use in slider type applications
" RoHS compliant 32-QFN, 48-SSOP packages
24 23 22 21 20 19 18 17
SNS8 25
SNS8K 26
SNS9 27
SNS9K 28
N.C. 29
/CHANGE 30
1W 31
RX 32
QT1101
32-QFN
16 SNS5
15 SNS4K
14 SNS4
13 SNS3K
12 SNS3
11 SNS2K
10 SNS2
9 SNS1K
1 234 56 78
APPLICATIONS
! MP3 players
! Mobile phones
! PC peripherals
! Television controls
! Pointing devices
! Remote controls
QT1101 charge-transfer (‘QT’) QTouch^TM IC is a self-contained, patented digital controller capable of detecting near-proximity or touch
on up to ten 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.
Patented AKS™ Adjacent Key Suppression 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.
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, an LP (low power) 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.
TA
-40⁰C to +85⁰C
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AVAILABLE OPTIONS
32-QFN
QT1101-ISG
48-SSOP
QT1101-IS48G
CCopyright © 2005-2006 QRG Ltd
QT1101 R4.06/0806