QT113-D

Series:	QProx™
Packaging:	Tube
Part Status:	Obsolete
Type:	Buttons
Proximity Detection:	Yes
Number of Inputs:	1
LED Driver Channels:	--
Interface:	--
Resolution:	14 b
Voltage - Supply:	2.5 V ~ 5.5 V
Current - Supply:	600µA
Operating Temperature:	0°C ~ 70°C
Package / Case:	8-DIP (0.300", 7.62mm)
Supplier Device Package:	8-DIP

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Introduction

QT113-D is a type of capacitive touch application, which is primarily used in sensing and controlling the low-voltage touch and gesture events. This type of interface is integrated with a single multi-sensor design, which is used to detect 3-D gesture events and serve as an additional form of interactive user input. The capacitive touch application works based on the principles of capacitive sensing that are widely used in the touch-screen devices. The capacitive touch using this application allows users to interact with the devices both through hard-keys and touchscreen and it is also possible to detect and interpret complex gestures made on any surface.

Capacitance and Capacitance Detection

Capacitance is a fundamental electrical property of all objects. It is a measure of the ability of an object to store an electric charge. When two objects have different electric potentials, the difference in potential can produce an electric field between them. This field enables the objects to act as a capacitor, where objects store electrical energy. This stored energy can then be released to provide a potential for further movement or transformation of electrical current.Capacitive sensing is a technology used to detect the presence or absence of an object by measuring the electrical capacitance of the object. Capacitance is a static charge that is held in an object and varies with its surroundings. When an object is placed in the vicinity of a capacitive sensor, the sensor measures the capacitance of the object and converts it into a digital voltage or digital output. This can then be used to control the operation of the device or system. The range of objects that can be detected by capacitive sensing is very broad and the applications of this technology are extensive.

Working Principle

The QT113-D capacitive touch application works on a principle of utilizing the electrostatic charge which is generated whenever an object comes in contact with any surface which is backed by one or more sensors. The device then converts this electrostatic charge into an analog voltage which is then sampled. The sampling is used to identify the object and its position in relation to the other objects placed on the surface. This detection process is handled by the integrated software which is capable of interpreting the data received from the sensors and then determining the position and type of the object that is being touched.The QT113-D capacitive touch application uses an array of capacitive touch sensors that are connected to the hardware. The hardware is then responsible for sampling the signals from the sensors and controlling the output. The hardware also includes a low power microcontroller which is responsible for the communication between the sensors and the system. The microcontroller is also responsible for controlling the output of the device and managing the events that occur when something is touched.

Conclusion

QT113-D capacitive touch application is a versatile capacitive touch-screen technology that is suitable for a variety of applications. Its single multi-sensor design makes it an appealing choice for both hard-key and gesture-based interfaces. This technology is widely used in mobile and touch-screen devices due to its ability to detect objects and interpret complex gestures. The capacitive sensing principle employed by the application makes it possible to detect objects even on surfaces with low electric potential. The integrated software allows for the detection and interpretation of 3-D gestures. This makes the QT113-D capacitive touch application an ideal choice for gesture-based interfaces and interactive user interfaces.

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