lQ
This datasheet is applicable to all revision 3 chips
SYNC/LP
DETECT
SNS7K
SNS6K
QT1103
QT
OUCH
™ 10-K
EY
S
ENSOR
IC
SNS5K
SNS7
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
SNS6
VSS
SNS8
SNS8K
SNS9
SNS9K
N/C
/CHANGE
1W
RX
25
26
27
28
29
30
31
32
16
15
14
SNS5
SNS4K
SNS4
SNS3K
SNS3
SNS2K
SNS2
SNS1K
QT1103
13
12
11
10
9
1
SS
2
/RST
3
VDD
4
OSC
5
N/C
6
SNS0
7
SNS0K
8
SNS1
AT A GLANCE
Number of keys:
Technology:
Key outline sizes:
Key spacings:
Electrode design:
Layers required:
Substrates:
Electrode materials:
Panel materials:
Adjacent Metal:
Panel thickness:
Key sensitivity:
Outputs:
Moisture tolerance:
Power:
Package:
Signal processing:
Applications:
Patents:
1 to 10
Patented spread-spectrum charge-transfer (one-per-key mode)
5mm x 5mm or larger (panel thickness dependent); widely different sizes and shapes possible
6mm or wider, center to center (panel thickness, human factors dependent)
Single solid or ring shaped electrodes; wide variety of possible layouts
One layer substrate; electrodes and components can be on same side
FR-4, low cost CEM-1 or FR-2 PCB materials; polyamide FPCB; PET films, glass
Copper, silver, carbon, ITO, Orgacon
†
ink (virtually anything electrically conductive)
Plastic, glass, composites, painted surfaces (low particle density metallic paints possible)
Compatible with grounded metal immediately next to keys
Up to 50mm glass, 20mm plastic (key size dependent)
Settable via change in reference capacitor (Cs) value
RS-232 based
serial output
, capable of single-wire operation
Good
2.8V ~ 5.0V
32-pin 5 x 5mm QFN RoHS compliant
Self-calibration, auto drift compensation, noise filtering, AKS™
Portable devices, domestic appliances and A/V gear, PC peripherals, office equipment
AKS™
(patented Adjacent Key Suppression)
QTouch™
(patented Charge-transfer method)
†
Orgacon is a registered trademark of Agfa-Gevaert N.V
AVAILABLE OPTIONS
T
A
32-QFN
-40
0
C to +85
0
C
QT1103-ISG
LQ
C
Copyright © 2006-2007 QRG Ltd
QT1103_3R0.03_0607
QUANTUM [ QUANTUM RESEARCH GROUP ]
