CAP1298-1-SL

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The CAP1298-1-SL is one of the most widely used capacitive touch sensing ICs. This IC is widely used in a variety of applications with touch sensing and detection capability. The application field of the CAP1298-1-SL includes smart toys and hand-held electronic devices, such as portable game consoles and mobile phones.

Working principle of the CAP1298-1-SL is based on capacitance measuring. This IC uses a charge transfer technology that is applied when a user touches, applies a pressure, or swipes their finger across the touch-sensitive interface. This IC provides a detection range from 1pF to 9pF. When the user is touching, the capacitance detected is compared to the capacitance within the range, and if it is within the range the IC will output a logic high signal.

The CAP1298-1-SL consists of multiple charge transfer elements (CTAI12A and CTAI14A) and an analog-to-digital converter (ADC). CTAI12A and CTAI14A serve as an interface between touch/pressure-sensing electrodes and ADC. When a user touches the surface, the electrode charge is transferred to CTAI12A or CTAI14A and the ADC converts the charge value into digital code. The high accuracy and low power consumption of the CAP1298-1-SL makes it ideal for battery-powered applications.

The CAP1298-1-SL has several features that make it a good choice for many applications. It has an advanced touch sensing algorithm and a very fast response time of less than 10µs. It also has high sensitivity, with a detectability threshold of typically about 1pF. It also has a “shield drive capability that allows for the shielding of the touch elements, thus protecting the touch surface from spurious signals and noise. Finally, it has a temperature compensation function that allows for a consistent operation over a wide temperature range.

The CAP1298-1-SL is a highly reliable and versatile IC, especially when used with appropriate shielding layers and driving electrodes. It is a popular choice for touch sensing applications such as portable gaming devices, mobile phones, automotive control systems, and many more. With its high accuracy, low power consumption, and affordable pricing, the CAP1298-1-SL is a solid choice for a variety of touch-sensing applications.

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