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QUANTUM - 10-KEY SENSOR IC

Numéro de référence QT1103
Description 10-KEY SENSOR IC
Fabricant QUANTUM 
Logo QUANTUM 





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QT1103 fiche technique
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QT1103
QTOUCH™ 10-KEY SENSOR IC
This datasheet is applicable to all revision 3 chips
The QT1103 is designed for low cost appliance, mobile, and consumer
electronics applications.
QTouch™ technology is a type of patented charge-transfer sensing
method well known for its robust, stable, EMC-resistant characteristics.
It is the only all-digital capacitive sensing technology in the market
today. This technology has over a decade of applications experience
spanning thousands of designs.
QTouch circuits are renowned for simplicity, reliability, ease of design,
and cost effectiveness.
QTouch™ sensors employ a single reference capacitor tied to two pins
of the chip for each sensing key; a signal trace leads from one of the
pins to the sensing electrode which forms the key. The sensing
electrode can be a simple solid shape such as a rectangle or circle. An
LED can be placed near or inside the solid circle for illumination.
The key electrodes can be designed into a conventional Printed Circuit
Board (PCB) or Flexible Printed Circuit Board (FPCB) as a copper
pattern, or as printed conductive ink on plastic film.
24 23 22 21 20 19 18 17
SNS8
SNS8K
SNS9
SNS9K
N/C
/CHANGE
1W
RX
25
26
27
28
29
30
31
32
QT1103
1 234 56 78
16 SNS5
15 SNS4K
14 SNS4
13 SNS3K
12 SNS3
11 SNS2K
10 SNS2
9 SNS1K
AT A GLANCE
Number of keys:
1 to 10
Technology:
Patented spread-spectrum charge-transfer (one-per-key mode)
Key outline sizes:
5mm x 5mm or larger (panel thickness dependent); widely different sizes and shapes possible
Key spacings:
6mm or wider, center to center (panel thickness, human factors dependent)
Electrode design:
Single solid or ring shaped electrodes; wide variety of possible layouts
Layers required:
One layer substrate; electrodes and components can be on same side
Substrates:
Electrode materials:
FR-4, low cost CEM-1 or FR-2 PCB materials; polyamide FPCB; PET films, glass
Copper, silver, carbon, ITO, Orgaconink (virtually anything electrically conductive)
Panel materials:
Plastic, glass, composites, painted surfaces (low particle density metallic paints possible)
Adjacent Metal:
Compatible with grounded metal immediately next to keys
Panel thickness:
Up to 50mm glass, 20mm plastic (key size dependent)
Key sensitivity:
Settable via change in reference capacitor (Cs) value
Outputs:
RS-232 based serial output, capable of single-wire operation
Moisture tolerance:
Good
Power:
2.8V ~ 5.0V
Package:
32-pin 5 x 5mm QFN RoHS compliant
Signal processing:
Self-calibration, auto drift compensation, noise filtering, AKS
Applications:
Portable devices, domestic appliances and A/V gear, PC peripherals, office equipment
Patents:
AKS™ (patented Adjacent Key Suppression)
QTouch™ (patented Charge-transfer method)
Orgacon is a registered trademark of Agfa-Gevaert N.V
AVAILABLE OPTIONS
TA
-400C to +850C
32-QFN
QT1103-ISG
LQ
CCopyright © 2006-2007 QRG Ltd
QT1103_3R0.03_0607

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