Product Introduction
Capacitive Touch Chips- The GT301L is one of the GreenTouch3TMcapacitive touch sensor series. In particular, the GT301L can perform capacitive sensing with the GreenTouch3TMengine operation. The GreenTouch3TMengine is an environmental compensation circuit. The GT301L provides an overall solution for 1-ch touch key applications, such as replacing normal mechanical switches, level sensors, etc. It also enables a simple and easy application circuit due to the basic algorithm and pins of the GT301L, hence the GT301L map is used.GT301LIt not only has a digital touch decision procedure, which is very reliable for sensing decisions, but also has a smart algorithm that makes it possible to detect slow-motion touches (in case other touch sensors generally compensate for slow-motion touches). The GT301L has a single touch sensing input pin and reference, the input pin detects and determines capacitive touch, and a single direct output pin with an open-drain structure, and functions as active low or toggle output. Three connection types of control pins can select two sensitivity options and toggle output functions.
I. Characteristics of the capacitive touch IC TG301L:
1) 1-channel cap sensing input
2) Embedded GreenTouch3TMengine
Analog noise compensation circuit
Embedded digital noise filter
Smart sensitivity calibration
Embedded CS, EFT enhancement core
3) Direct interface mode
Open drain, active low
4) Low power consumption
NP - Standby mode: 65uA (@5.0V), 53uA (@3.0V)
LP - Standby mode: 27uA (@5.0V), 16uA (@3.0V)
5) 1.8V to 5.5V single power supply operation
6) Mini package type
SOT23-6L
DFN-6L 2x2
II. Applications of the capacitive touch IC TG301L:
Multi-key applications - door locks, remote controls, etc.
Portable electronics - mobile phones, MP3, PMP, PDA, navigation, digital cameras, camcorders, etc.
Multimedia devices - TVs, DVD players, Blu-ray players, digital photo frames, home theaters, etc.
Home appliances - refrigerators, air purifiers, air conditioners, washing machines, microwave ovens, etc.
PC, office automation, etc. - PCs, LCD monitors, fax machines, copiers, lighting controls, toys, gaming devices, etc.
