FDC2114RGHR

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Capacitive touch or capacitive sensing has become increasingly popular in recent years as a method for user interface and control. The FDC2114RGHR is a digital output programmable linear capacitive touch sensing IC with a highly accurate, flexible, and low-power solution for capacitive touch keypad applications.

Application Field

The FDC2114RGHR can be widely used in various applications, such as keypads, buttons, sliders, and wheels on consumer electronic products, industrial control products, medical equipment, home appliances, and automotive systems. Other features make it suitable for use in a wide range of touch technology-based interface applications.

Additionally, innovations in capacitive sensing technology have made it suitable for wearable and medical applications such as stylus pens, fitness trackers, medical testing equipment, and smart watches. The FDC2114RGHR has high immunity to power line noise and is suitable for a variety of touch system designs such as linear and segmented touch applications.

Working Principles

The FDC2114RGHR is based on the FDC2xx family of patented low-power, high-accuracy capacitive touch sensing ICs from ROHM. The FDC2114RGHR has a programmable linear capacitive sensing feature, which can detect touch up to 80 mm with a high level of precision and resolution. The FDC2114RGHR utilizes the "transmitter" and "receiver" technology for superior accuracy when used for keyboard or touchpad applications.

A small amount of capacitance is generated between the transmitter and receiver as a finger comes in contact with the sensor. The changing capacitance is converted into a digital output of "touch" or "no touch" which is sent to the host processor. The FDC2114RGHR has internal calibration and filtering features to improve accuracy and provide reliable results while preventing false triggers. Additionally, the FDC2114RGHR has built-in temperature compensation, eliminating the need for manual recalibration or adjustments in temperature or humidity.

The FDC2114RGHR also integrates multiple levels of output settings, allowing for settings to be adjusted for different applications. This combined with the low power consumption, high accuracy, and flexible design makes the FDC2114RGHR an excellent choice for many different capacitive touch applications.

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