lQ
QT60160, QT60240
16 AND 24 KEY QMATRIX™ TOUCH
S
ENSOR IC
s
These devices are designed for low cost mobile and consumer electronics
applications.
32 31 30 29 28 27 26 25
24
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.
M_SYNC
CHANGE
VSS
1
2
3
4
5
6
7
8
Y1B
Y0B
A0
23
22
21
20
19
18
17
QT60240
QT60160
VDD
VSS
VDD
A1
VSS
VDD
MLF-32
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.
X6
VDD
X5
X7
9 10 11 12 13 14 15 16
AT A GLANCE
Number of keys:
1 to 16 (QT60160), or 1 to 24 (QT60240)
Patented spread-spectrum charge-transfer (transverse mode)
Technology:
Key outline sizes:
Key spacings:
6mm x 6mm or larger (panel thickness dependent); widely different sizes and shapes possible
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:
Adjacent Metal:
Panel thickness:
Key sensitivity:
Interface:
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)
Individually settable via simple commands over serial interface
I2C 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
AVAILABLE OPTIONS
Part Number
QT60160-ISG
QT60240-ISG
Keys
16
24
TA
-400C to +850C
-400C to +850C
LQ
Copyright © 2006 QRG Ltd
QT60240-ISG R8.06/0906