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Korea GreenChip Capacitive touch IC - GT301L

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Embedded GreenTouch3TM Engine
−Analog noise compensation circuit
−Embedded digital noise filter
−Intelligent sensitivity calibration
−Embedded CS, EFT enhancer core
Direct interface mode
−Open drain and active low function

Model Number: GT301L
Data Sheet:

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Product Specification

The GT301L is one of GreenTouch3TM capacitive touch sensor series. Especially the GT301L can do capacitance sensing under GreenTouch3TM engine operation. GreenTouch3TM engine is an environmental compensation circuit.

Thanks to GreenTouch3TM engine, the application will be more robust and problem free against EMC, EMI, H/W variation, voltage disturbance, temperature drift, humidity drift and so on.

The GT301L offers whole solutions for 1-ch touch key applications, such as, normal mechanical switch replacements, liquid level sensor, and so on. Simple and easy application circuit can be also obtained by using GT301L because of its fundamental algorithms and pin maps. The GT301L has not only digital touch decision procedure that makes very reliable sensing determination but also smart algorithms that make it possible to detect slow action touch (In case of other touch sensor slow action touch is generally compensated).

The GT301L has single touch sensing input pin and reference input pin to detect and determine capacitive touch, and single direct output pin which has open drain structure and operates as active low or toggle output function. Three connection types of CTRL pin make it possible to select two sensitivity options and toggle output function.

FEATURES:

1 channel cap. Sensing input

Embedded GreenTouch3TM Engine

−Analog noise compensation circuit

−Embedded digital noise filter

−Intelligent sensitivity calibration

−Embedded CS, EFT enhancer core

Direct interface mode

−Open drain and active low function

Toggle output mode

−It is possible by CTRL pin OPEN

Low power consumption