AD7873ARUZ-REEL Touch Screen Digitizer

The AD7873ARUZ-REEL from Analog Devices Inc. is a highly integrated touch screen digitizer that is designed to work with 4-wire resistive touch screens. This precision device is ideal for portable applications where power consumption and compactness are key considerations. The AD7873ARUZ-REEL simplifies the interface to touch screens by providing a complete, ready-to-use touch screen control solution.

Featuring on-chip switchable reference sources, the AD7873ARUZ-REEL allows for accurate and flexible touch screen measurements. Its 12-bit SAR ADC offers high-resolution touch coordinates and pressure measurement, ensuring precise user interaction with the touch interface. The digitizer operates on a single 2.2 V to 3.6 V supply, making it suitable for battery-operated devices such as PDAs, smartphones, GPS units, and other handheld instruments.

The device supports a wide range of data rates up to 125 kSPS, delivering responsive touch screen performance. It also includes a low-power idle mode, further conserving energy when the touch screen is not in use. The AD7873ARUZ-REEL communicates with host processors via a serial interface compatible with SPI, QSPI™, MICROWIRE™, and DSP interface standards, which provides easy integration with most microcontrollers and processors.

Packaged in a compact 16-lead TSSOP (Thin Shrink Small Outline Package), the AD7873ARUZ-REEL is provided in tape and reel form, making it suitable for automated assembly processes used in high-volume production. The device's robust design ensures reliable operation over a temperature range of -40°C to +85°C, accommodating the diverse environmental conditions of various applications.

Key features of the AD7873ARUZ-REEL include:

• 4-wire touch screen interface
• 12-bit SAR ADC with on-chip reference
• Single 2.2 V to 3.6 V operation
• Up to 125 kSPS throughput rate
• Low-power idle mode
• Serial interface compatible with multiple standards
• Compact 16-lead TSSOP packaging
• Operational temperature range of -40°C to +85°C

Overall, the AD7873ARUZ-REEL from Analog Devices Inc. provides a reliable and efficient solution for incorporating touch screen functionality into a wide array of electronic devices, enhancing user interaction and experience.