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QST1108CU1 Datasheet(PDF) 1 Page - STMicroelectronics

Part # QST1108CU1
Description  Capacitive touch sensor device 8 keys with individual key state outputs or I2C interface
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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Not For New Design
This is information on a product still in production but not recommended for new designs.
July 2008
Rev 5
1/51
1
QST108
Capacitive touch sensor device
8 keys with individual key state outputs or I2C interface
Features
Patented charge-transfer design
Up to 8 independent QTouch™ keys supported
Individual key state outputs or I2C interface
Fully “debounced” results
Patented AKS™ Adjacent Key Suppression
Self-calibration and auto drift compensation
Spread-spectrum bursts to reduce EMI
Up to 5 general-purpose outputs
ECOPACK® (RoHS compliant) package
Applications
This device specifically targets human interfaces
and front panels for a wide range of applications
such as PC peripherals, home entertainment
systems, gaming devices, lighting and appliance
controls, remote controls, etc.
QST devices are designed to replace mechanical
switching/control devices and the reduced
number of moving parts in the end product
provides the following advantages:
Lower customer service costs
Reduced manufacturing costs
Increased product lifetime
Description
The QST108 is the ideal solution for the design of
capacitive touch sensing user interfaces.
Touch-sensitive controls are increasingly
replacing electromechanical switches in home
appliances, consumer and mobile electronics,
and in computers and peripherals. Capacitive
touch controls allow designers to create stylish,
functional, and economical designs which are
highly valued by consumers, often at lower cost
than the electromechanical solutions they
replace.
The QST108 QTouch™ sensor IC is a pure digital
solution based on Quantum's patented charge-
transfer (QProx™) capacitive technology.
QTouch™ and QProx™ are trademarks of the
Quantum Research Group.
LQFP32 (7x7 mm)
Table 1.
Device summary
Feature
Order codes
QST108KT6
Operating supply voltage
2.4 to 5.5 V
Supported interfaces
Individual key state outputs or I2C Interface
Operating temperature
-40° to +85° C
Package
LQFP32 (7x7 mm)
www.st.com


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