The AD7873ARQZ is a sophisticated touch screen controller developed by Analog Devices Inc., designed to interface with 4-wire resistive touch screens. This high-performance device offers precision and ease of integration for various applications, including personal digital assistants (PDAs), smart handheld devices, and industrial controls.

Key Features

• 12-bit SAR ADC: The AD7873ARQZ features a 12-bit Successive Approximation Register (SAR) analog-to-digital converter, providing high-resolution touch screen data with exceptional accuracy.
• On-Chip Calibration: It includes an on-chip calibration function that compensates for variations in the touch screen, ensuring reliable performance over time and across different environmental conditions.
• Single Supply Operation: The device operates on a single 2.2 V to 3.6 V power supply, making it ideal for battery-powered applications where power efficiency is crucial.
• Low Power Consumption: With a typical power consumption of only 750 µA, the AD7873ARQZ is optimized for power-sensitive designs, extending the battery life of portable devices.
• Flexible Interface Options: It offers a choice of four-wire SPI, QSPI, MICROWIRE, and DSP interface options, providing versatility for various system design needs.
• Temperature Range: The device is operational over an extended temperature range of -40°C to +85°C, making it suitable for demanding environments.

Package and Quality

The AD7873ARQZ is available in a compact 16-lead QSOP package, allowing for a small footprint on the PCB. Analog Devices Inc. ensures high-quality standards, and the device is designed to meet the rigorous demands of the industry.

Applications

This touch screen controller is ideal for a variety of applications where precision touch input is required. It is widely used in:

• Portable Electronic Devices
• Point-of-Sale Terminals
• GPS Navigation Systems
• Industrial Controls
• Medical Monitoring Devices

With its advanced features and reliable performance, the AD7873ARQZ from Analog Devices Inc. is an excellent choice for developers looking to incorporate touch screen functionality into their next project.