The AD7873ARQ is a high-performance integrated circuit (IC) component manufactured by Analog Devices. It belongs to the family of high-resolution touch screen digitizers and supports both resistive and surface capacitive touch screens. This IC is widely used in applications requiring precise touch detection and high-resolution digitization.
Key Features:
1. High-Resolution: The AD7873ARQ offers exceptional touch resolution, providing accurate and precise touch detection. It supports up to 12-bit resolution for both X and Y axes, enabling the detection of fine movements and gestures.
2. Dual Input Channels: This IC has two independent analog signal channels, allowing simultaneous digitization of both the X and Y coordinates. Moreover, these channels can function in multiple modes, including 4-wire resistive touch and capacitive touch.
3. Integrated On-Chip Reference: The AD7873ARQ incorporates an on-chip voltage reference, eliminating the need for external precision references. This feature saves board space and simplifies the design process.
4. Low Power Consumption: With a power-down mode and low-power options, this IC minimizes power consumption, making it suitable for battery-powered devices. It also features a continuous power monitoring circuit to detect external power supply failures.
5. Serial Interface: The IC utilizes a serial interface compatible with both SPI (Serial Peripheral Interface) and Microwire protocols. This enables seamless communication with microcontrollers and other digital devices
