MTCH112T-I/MF

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MTCH112T-I/MF is a product of Microchip Technology Inc. It belongs to the category of Interface - Sensor and Detector Interfaces. Basically it is a capacitive touch controller which offers a high performance, wide range and low power solution for interfacing to low power sensors. It is designed to interface with cost-sensitive capacitive-sensor designs, providing superior flexibility, power efficiency and sensitivity.

The primary application field of MTCH112T-I/MF is to provide the control of capacitive sensors which can be used in the interface of various products such as smartphones, consumer electronics, remote controls, home automation and industrial automation.

The basic working principle of MTCH112T-I/MF is based on detecting changes in the capacitance of a sensor. It is mainly used to sense a finger moving on the capacitive input surface. The touch sensing surface is energized and generates a Low Frequency Alternating Current (LFAC) measurement based capacitance. The capacitance of the input channel is measured relative to the programmable comparator threshold, and when a finger moves across the touch surface, the measured capacitance is changed and the controller is able to sense the change. It uses a sensing methodology called Frequency Modulated Continuous Wave (FMCW) which allows the capacitance to be detected without the need for an external reference capacitor.

The FMCW technique of the MTCH112T-I/MF renders accurate touch detection for low-power, cost-sensitive sensing. The controller is able to detect single or multiple touch points and can sense down to 1pf or lower. MTCH112T-I/MF also offers excellent signal-to-noise-ratio which helps in rejecting noise, greatly improving the accuracy and providing a linear output.

MTCH112T-I/MF also supports various Sleep Modes which helps in providing an extended battery life as well as low power consumption. It also supports a large variety of I/O including I2C, SPI, interrupt and direct output. Furthermore, the controller is highly configurable through the I2C interface control registers, reducing the need for external components.

The MTCH112T-I/MF controller is an ideal solution for cost-sensitive capacitive touch sensing applications. It offers superior flexibility by supporting a wide range of capacitive inputs, and also provides high accuracy, low power consumption and a variety of I/O options. It also requires minimal external components, making it simple and easy to use.

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