AD7879-1ACPZ-RL

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The AD7879-1ACPZ-RL is a touch screen controller from the data acquisition family. This device provides robust solutions for extracting touch signals from a variety of capacitive sensing technologies. The AD7879-1ACPZ-RL can be used as an analog-to-digital converter that is programmed to accept and process capacitive touch signals. It is suitable for applications including resistive touch displays, touchpads, stylus-based input systems, optoelectric touch screens, digitizers, and digital Pen interfaces.

The AD7879-1ACPZ-RL device is an ideal solution for applications needing a robust and simple input device, with high-performance and low-power operation. It includes an integrated flash memory interface to store user-provided application settings and routines, allowing individual settings and quick recognition of touchscreen inputs. The device also features a programmable range, resolution, and bandwidth as well as Wake on Touch capability and power management capabilities.

The primary feature of the AD7879-1ACPZ-RL device is its capacitive sensing technology. Traditional contact-based touchscreens operate using a voltage-drop across a resistive material, while capacitive touchscreens work by measuring a change in capacitance as a finger touches the display surface. This change in capacitance is used to generate an analog touch signal. The AD7879-1ACPZ-RL is equipped with an analog-to-digital converter (ADC) that converts the analog touch signal into a digital signal. This digital signal is then processed according to the user’s predetermined application settings.

The AD7879-1ACPZ-RL features an integrated 8-bit ADC with programmable resolution, frequency band, range, and power management capabilities. Its programmable range and frequency band allow the device to accurately measure capacitance from low-impedance, high-impedance, and metal-tipped touchscreen systems. Its power management capabilities allow it to save power by automatically switching between active and sleep states when a user’s touch input is detected or not detected.

The device also includes an integrated flash memory interface, allowing it to store application settings, calibration data, and touch gestures. This means that the device can recognize inputs without a host processor and can be used with low-power applications. Additionally, the device includes an integrated temperature sensor, which can be used to protect the device from environmental changes that may affect the accuracy of its measurements.

The AD7879-1ACPZ-RL is an ideal solution for a variety of capacitive touch display and interface applications. Its programmable range and frequency band, combined with its integrated flash memory and temperature sensing capabilities, offer a comprehensive and reliable solution for touch screen controller applications.

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