lQ QT60160, QT60240
16
AND
24 K
EY
QM
ATRIX
™ T
OUCH
S
ENSOR
IC
s
AT A GLANCE
Number of keys: 1 to 16 (QT60160), or 1 to 24 (QT60240)
Technology: Patented spread-spectrum charge-transfer (transverse mode)
Key outline sizes: 6mm x 6mm or larger (panel thickness dependent); widely different sizes and shapes possible
Key spacings: 8mm or wider, center to center (panel thickness dependent)
Electrode design: Two-part electrode shapes (drive-receive); wide variety of possible layouts
Layers required: One layer (with jumpers), two layers (no jumpers)
Electrode materials: PCB, FPCB, silver or carbon on film, ITO on film, Orgacon
†
ink on film
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: Individually settable via simple commands over serial interface
Interface: I
2
C slave mode (100kHz), or parallel output via external shift registers
Moisture tolerance: Best in class.
Power: 1.8V ~ 5.5V, 40µA (16 keys at 1.8V, 2s Low Power mode). Guaranteed to 1.62V.
Package: 32-pin 5 x 5mm MLF RoHS compliant
Signal processing: Self-calibration, auto drift compensation, noise filtering, Adjacent Key Suppression
TM
Applications: Mobile phones, remote controls, domestic appliances, PC peripherals, automotive
†
Orgacon is a registered trademark of Agfa-Gevaert N.V
LQ
Copyright © 2006 QRG Ltd
QT60240-ISG R8.06/0906
These devices are designed for low cost mobile and consumer electronics
applications.
QMatrix™ technology employs transverse charge-transfer sensing electrode
designs which can be made very compact and are easily wired. Charge is
forced from an emitting electrode into the overlying panel dielectric, and then
collected on a receiver electrode which directs the charge into a sampling
capacitor which is then converted directly to digital form without the use of
amplifiers.
Keys are configured in a matrix format that minimizes the number of required
scan lines and device pins. 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.
Y2A
Y1A
Y0A
/RST
SCL
SDA
SMP
Y2B
LATCH
VREF
S_SYNC
X0
X1
X2
X3
X4
M_SYNC
CHANGE
VSS
VDD
VSS
VDD
X6
X7 X5
VDD
A1
VDD
VSS
A0
Y0B
Y1B1
2
3
4
5
6
7
817
18
19
20
21
22
23
24
32
31 30
29 28
27
26
25
910
11
1615
14
13
12
QT60240
QT60160
MLF-32
-40
0
C to +85
0
C24QT60240-ISG
-40
0
C to +85
0
C16QT60160-ISG
T
A
KeysPart Number
AVAILABLE OPTIONS
