CAP1126-1-AP-TR Integrated Circuits (ICs)

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The CAP1126-1-AP-TR is an application-specific capacitive touch sensing device that is designed to provide superior accuracy and ease of use. It combines high-precision capacitance touch sensing and ultra-low power operation for maximum user performance. The device is designed for use in a wide variety of consumer, medical, and industrial applications such as single- and multi-touch user interfaces, keypads, sliders, and wheel control. It is ideal for applications where any number of buttons or switches need to be sensed, such as on-screen navigation, navigation wheel, volume wheel, or joystick.

Application Field

The CAP1126-1-AP-TR is designed for use in consumer, medical, and industrial products with high accuracy and low power requirements. These applications include on-screen navigation, navigation wheel, volume wheel, or joystick. It is also suitable for embedded applications in mobile device interfaces, game controllers, medical equipment, and HVAC control.

The device supports up to 16 capacitive buttons and can also be used as a proximity sensing system. The proximity sensing capability allows the device to accurately detect objects that enter into the field of proximity and provide accurate detection of objects, even when the objects have different shapes or different heights.

The device offers both single and multi-touch operation, meaning that the device can detect up to 16 simultaneous touches on the sensing surface. This makes it ideal for use in games and other applications that require multiple touch points. Additionally, the device can be used to generate signals for various actions, such as sliding an object, rotating a wheel, or moving a cursor.

Working Principle

The CAP1126-1-AP-TR utilizes a capacitive touch sensing method to detect objects on its sensing surface. In this method, a low voltage is applied to the capacitive touch pad, and the capacitance of the pad is measured. When an object such as a finger or hand is placed near to the touch pad, it will cause the capacitance of the pad to change, which is detected by the device. This change in capacitance is then converted into a digital signal, which is sent to the host processor.

The device offers a range of settings to tailor the sensing performance according to the application requirements. These settings include a range of configurable parameters, such as sensitivity, hysteresis, touch detection threshold, and power consumption settings.

The device also has several built-in functions to improve user experience, such as auto-touch, palm rejection, water rejection, and noise reduction. All of these features work together to ensure a reliable and accurate touch experience that is tailored to the user’s needs.

In addition to the above features, the device also offers an RTC, an RF transceiver, an integrated temperature sensing element, and a range of digital and analog interfaces. All of these features provide a powerful and flexible platform for a wide range of applications.

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