Texas Instruments

ADS7843E

ADS7843E Description

The ADS7843E from Texas Instruments is a high-performance 12-bit touchscreen controller designed for 4-wire resistive touch panels. It operates within a 2.7V to 5V supply range, consuming only 2.5 µA of current, making it ideal for low-power embedded systems. The device features an external voltage reference for precise analog-to-digital conversion and supports a serial interface for easy integration with microcontrollers. Packaged in a 16-pin SSOP tube, it complies with ROHS3 and REACH environmental standards, ensuring reliability in industrial and consumer applications.

ADS7843E Features

• 12-bit resolution for accurate touch position detection.
• Ultra-low power consumption (2.5 µA) extends battery life in portable devices.
• Wide voltage range (2.7V–5V) supports flexible system design.
• 4-wire resistive touchscreen interface simplifies panel integration.
• External voltage reference enhances measurement precision.
• Serial SPI-compatible interface reduces microcontroller pin count.
• Surface-mount (SSOP-16) package saves PCB space.
• RoHS3 and REACH compliant for environmentally conscious designs.

ADS7843E Applications

The ADS7843E excels in applications requiring high-resolution touch input with minimal power draw, such as:

• Portable medical devices (glucometers, handheld monitors).
• Industrial HMIs (control panels, operator interfaces).
• Consumer electronics (e-readers, smart home controls).
• Automotive dashboards (infotainment systems, navigation).
• Embedded systems where space and efficiency are critical.

Conclusion of ADS7843E

The ADS7843E stands out for its low power, high accuracy, and compact design, making it a top choice for resistive touchscreen applications. Its 12-bit resolution and flexible supply range ensure reliable performance across diverse environments, while compliance with RoHS3 and REACH underscores its suitability for modern electronics. Whether in medical, industrial, or consumer devices, the ADS7843E delivers precision and efficiency in a robust package.