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STMicroelectronics - Capacitive touch sensor device 8 keys

Numéro de référence QST108
Description Capacitive touch sensor device 8 keys
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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QST108 fiche technique
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QST108
Capacitive touch sensor device
8 keys with individual key state outputs or I2C interface
Not For New Design
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
LQFP32 (7x7 mm)
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.
Table 1. Device summary
Feature
Operating supply voltage
Supported interfaces
Operating temperature
Package
Order codes
QST108KT6
2.4 to 5.5 V
Individual key state outputs or I2C Interface
-40° to +85° C
LQFP32 (7x7 mm)
July 2008
Rev 5
This is information on a product still in production but not recommended for new designs.
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