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QT60325 参数 Datasheet PDF下载

QT60325图片预览
型号: QT60325
PDF下载: 下载PDF文件 查看货源
内容描述: 32 , 48 , 64 KEY QMatrix KEYPANEL传感器IC [32, 48, 64 KEY QMatrix KEYPANEL SENSOR ICS]
分类和应用: 传感器
文件页数/大小: 42 页 / 810 K
品牌: QUANTUM [ QUANTUM RESEARCH GROUP ]
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LQ
P
RELIMINARY
32, 48, 64 K
EY
QMatrix
K
EYPANEL
S
ENSOR
IC
S
LED
DRDY
X7
CZ1
CSR
AIN
MS
Vdd
Vss
YG
SS
QT60325, QT60485, QT60645
Advanced second generation QMatrix controllers
Up to 32, 48 or 64 touch keys through any dielectric
Panel thicknesses to 5 cm or more
100% autocal for life - no adjustments required
Keys individually adjustable for sensitivity, response time,
and many other critical parameters
Mix and match key sizes & shapes in one panel
Passive matrix - no components at the keys
Moisture suppression capable
AKS™ - Adjacent Key Suppression feature
Synchronous noise suppression
Sleep mode with wake pin
SPI Slave or Master/Slave interface to a host controller
Low overhead communications protocol
44-pin TQFP package
MOSI
MISO
SCLK
RST
Vdd
Vss
XTO
XTI
X0
X1
X2WS
1
2
3
4
5
6
7
44 43 42 41 40 39 38 37 36 35 34
33
32
CZ2
YS0
YS1
YS2
Aref
AGnd
AVdd
YC7
YC6
YC5
YC4
QT60325
QT60485
QT60645
TQFP-44
31
30
29
28
27
26
25
24
8
9
10
11
23
12 13 14 15 16 17 18 19 20 21 22
XS
X6
X5
X4
X3
Vdd
YC1
YC0
Vss
YC3
YC2
APPLICATIONS
Security keypanels
Industrial keyboards
Appliance controls
Outdoor keypads
ATM machines
Touch-screens
Automotive panels
Machine tools
The QT60325, QT60485, and QT60645 digital charge-transfer (“QT”) QMatrix™ ICs are designed to detect human touch on up to
32, 48, or 64 keys respectively using a scanned, passive X-Y matrix. It will project the keys through almost any dielectric, e.g.
glass, plastic, stone, ceramic, and even wood, up to thicknesses of 5 cm or more. The touch areas are defined as simple 2-part
interdigitated electrodes of conductive material, like copper or screened silver or carbon deposited on the rear of a control panel.
Key sizes, shapes and placement are almost entirely arbitrary; sizes and shapes of keys can be mixed within a single panel of
keys and can vary by a factor of 20:1 in surface area. The sensitivity of each key can be set individually via simple functions over
the SPI port, for example via Quantum’s QmBtn program. Key setups are stored in an onboard eeprom and do not need to be
reloaded with each power-up.
These ICs are designed specifically for appliances, electronic kiosks, security panels, portable instruments, machine tools, or
similar products that are subject to environmental influences or even vandalism. They permit the construction of 100% sealed,
watertight control panels that are immune to humidity, temperature, dirt accumulation, or the physical deterioration of the panel
surface from abrasion, chemicals, or abuse. To this end the devices contain Quantum-pioneered adaptive self-calibration, drift
compensation, and digital filtering algorithms that make the sensing function robust and survivable. The devices use short dwell
times and Quantum’s patent-pending AKS™ feature to permit operation in wet environments.
The parts use a passive key matrix, dramatically reducing cost over older technologies that require an ASIC for every key. The
key-matrix can be made of standard flex material (e.g. Silver on PET plastic) or ordinary PCB material to save cost.
External circuitry consists of an opamp, R2R ladder-DAC network, a common PLD, a FET switch, and a small number of resistors
and capacitors which can fit into a footprint of roughly 8 sq. cm (1.5 sq. in). Control and data transfer is via a SPI port which can
be configured in either a Slave or Master/Slave mode.
QT60xx5 ICs make use of an important new variant of charge-transfer sensing,
transverse charge-transfer,
in a matrix format that
minimizes the number of required scan lines to provide a high economy of scale.
AVAILABLE OPTIONS
T
A
0
0 C to +70
0
C
0
0
C to +70
0
C
0
0
C to +70
0
C
-40
0
C to +105
0
C
-40
0
C to +105
0
C
-40
0
C to +105
0
C
TQFP
QT60325-S
QT60485-S
QT60645-S
QT60325-AS
QT60485-AS
QT60645-AS
lQ
Copyright © 2001 Quantum Research Group Ltd
Pat Pend. R1.05/0802