參數(shù)資料
型號： QT111-S
英文描述： IC-SMD-QPROX SENSOR
中文描述： 集成電路表面貼裝，量研傳感器
文件頁數(shù)： 3/9頁
文件大?。?/td> 78K
代理商： QT111-S
QT112 QProx 8-pin Sensor
See QT110 datasheet for primary information. This sheet only lists differences with the QT110.
Description
The QT112 is a variant of the QT110 having a faster response time of 49ms worst case, and 25ms typical. It is
designed for those touch sensing applications where faster speed is paramount, for example in games and toys
where rapid reaction time is critical, or in machine tool controls where speed is important. It trades off power
consumption for speed. Also, note that the device has a consensus filter count 2 instead of 4, and does not
have an acoustic driver for a piezo 'beeper'.
Differences with the QT110
The QT112 sensor is exactly the same in all respects to the QT110 with the following exceptions (refer to
Tables 4.3, 4.4, and 4.5 in the QT110 datasheet):
4.3 AC SPECIFICATIONS Vdd = 3.0, Ta = recommended operating range
ms
49
Response time
TR
ms
24
Burst spacing interval
TBS
Notes
Units
Max
Typ
Min
Description
Parameter
4.4 SIGNAL PROCESSING
ms/level
24
Negative drift compensation rate
ms/level
1,250
Positive drift compensation rate
samples
2
Consensus filter length
Notes
Units
Max
Typ
Min
Description
4.5 DC SPECIFICATIONS
Vdd = 3.0V, Cs = 10nF, Cx = 5pF, Ta = recommended range, unless otherwise noted
A
60
Supply current
IDD
Notes
Units
Max
Typ
Min
Description
Parameter
Piezo Driver Note:
The piezo acoustic driver has been removed, as the duration required to operate the
beeper would interfere with the sensing interval and slow down the device.
All other operating modes, specifications, and wiring should be taken from the QT110 data sheet.
Package Marking
DIP Package: DIP devices are marked 'QT112'
SO8 Package: Marked 'QT1' and also laserscribed '2'