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QT115

更新时间： 2024-01-28 21:23:16

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昆腾 - QUANTUM		/
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QT 11x Series Variations

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QT115 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	,	Reach Compliance Code：	unknown
风险等级：	5.84	湿度敏感等级：	1
Base Number Matches：	1

QT115 数据手册

Quantum Research Group Ltd.

4 August 2004

QT111-I / QT111H-I QProx™ 8-pin Sensor

See QT110 datasheet for primary information. This sheet only lists differences with the QT110.

This part is only available in -I suffix (-40..+85C)

Description

The QT111 is a touch sensor IC having recalibration timeouts (“max on-duration”) of 5 minutes and infinity. This

allows the device to be used in situations where recalibration timeouts are not desired, for example in certain

consumer, machine tool and process control applications where continuous touch over long periods is desired,

like hand-on-joystick sensors, dead-man switches, etc. Although the primary application of the device is still as a

‘touch sensor’, longer timeouts also aknowledge alternate uses for the QT110 family, for example in process

controls.

Differences with QT110

The QT111 sensor is exactly the same in all respects to the QT110 with the following exceptions shown in bold

(refer to Table 2-1 in the QT110 datasheet):

Table 2-1 Output Mode Strap Options

Tie

Max On-

Pin 3 to:

Pin 4 to:

Duration

Vdd

Gnd

Vdd

Gnd

Vdd

DC Out

Toggle

Pulse

300s

infinite

300s

All other operating modes, specifications, and wiring should be read from the QT110 data sheet.

QT111H Version

The QT111H version is the same as the QT111 except has an active-high output.

Cautionary Notes

Care should be taken in infinite timeout mode that the Cs and Cx capacitances and the Vcc supply do

not drift substantially over the course of a detection; if any of these parameters change sufficiently

during the course of an active detection (remember: drift compensation is never performed during a

detection event) the sensor can either ‘stick on’ after the detected object is removed, or, the QT110’s

apparent sensitivity will be substantially reduced for a period of time until drift compensation can

recover the proper reference level. If possible, uses the lowest gain setting when using with long

timeouts.

If the sensor ‘sticks on’ after the detected object or substance is removed from the sense element, the

only way to clear the sensor may be to remove power momentarily in order to induce a full

recalibration.

Package Marking - QT111-I

DIP Package: DIP devices are marked 'QT111'

SO8 Package: Marked 'QT1 Y'

Package Marking - QT111H-I

DIP Package: Not offered

SO8 Package: Marked 'QT1 C'

QT111 QProx™ 8-pin Sensor

123 4 5 6

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