AD7878JPZ

The AD7878JPZ is an integrated circuit (IC) component manufactured by Analog Devices Inc. It is a highly integrated analog-to-digital converter (ADC) specifically designed for touch screen applications. This IC enables the conversion of touch screen coordinates into digital values that can be processed by microcontrollers or other digital systems. Key Features of the AD7878JPZ: 1. Touch Screen Controller: The AD7878JPZ is primarily used as a touch screen controller, capable of interfacing with Resistive and Capacitive touch screens. It can handle up to four-wire and five-wire touch screens. 2. High-Speed Conversion: This IC offers high-speed conversion, with a maximum conversion time of 29 microseconds. This allows for rapid and accurate measurement of touch screen coordinates. 3. Integrated Circuits: The AD7878JPZ integrates multiple components within a single chip. It combines a 12-bit successive approximation ADC, a touch screen controller, and a voltage reference. This integration minimizes external components required to build a complete touch screen system. 4. Simplified Interface: The IC features a serial peripheral interface (SPI) for communication with the host microcontroller or system. The SPI supports both 3-wire and 4-wire interface modes, providing flexibility in system design