Texas Instruments

ADS7846N/2K5

ADS7846N/2K5 Description

The ADS7846N/2K5 is a 12-bit touch screen controller designed for 4-wire resistive touch screens. Manufactured by Texas Instruments, this integrated circuit (IC) offers a robust solution for touch screen applications, providing high performance and reliability. The ADS7846N/2K5 features a supply current of 500 µA and operates within a voltage range of 2.2V to 5.25V, making it suitable for a wide range of power supply configurations. It is available in a surface mount package, specifically in a Tape & Reel (TR) format, which facilitates efficient manufacturing processes.

This controller supports both external and internal voltage references, ensuring flexibility and accuracy in touch screen measurements. The ADS7846N/2K5 communicates via the SPI interface, enabling seamless integration with various microcontrollers and systems. With a resolution of 12 bits, it provides precise touch detection and position reporting, enhancing user interaction experiences.

ADS7846N/2K5 Features

• High Resolution: 12-bit resolution ensures accurate and precise touch detection, making it ideal for applications requiring high sensitivity and responsiveness.
• Flexible Power Supply: Operates within a wide voltage range of 2.2V to 5.25V, accommodating different power supply requirements and reducing the need for additional voltage regulation components.
• Low Power Consumption: With a supply current of only 500 µA, the ADS7846N/2K5 is energy-efficient, making it suitable for battery-powered and portable devices.
• Dual Voltage Reference: Supports both external and internal voltage references, providing flexibility and accuracy in touch screen measurements.
• SPI Interface: Facilitates easy integration with microcontrollers and other systems, ensuring reliable and fast data communication.
• Surface Mount Packaging: Available in a surface mount package (Tape & Reel), which is ideal for automated assembly processes and high-volume production.
• Compliance and Safety: The ADS7846N/2K5 is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards for electronics manufacturing.
• Moisture Sensitivity Level: MSL 2 (1 Year) indicates that the device is suitable for storage and handling in typical manufacturing environments without requiring special precautions.

ADS7846N/2K5 Applications

The ADS7846N/2K5 is well-suited for a variety of applications where touch screen functionality is essential. Some specific use cases include:

• Consumer Electronics: Ideal for smartphones, tablets, and other portable devices that require accurate and responsive touch screens.
• Industrial Control Systems: Suitable for touch screen interfaces in industrial control panels, human-machine interfaces (HMIs), and automated machinery.
• Medical Devices: Can be used in medical equipment with touch screen displays, such as patient monitors and diagnostic devices, where precision and reliability are critical.
• Automotive Infotainment Systems: Enhances user experience in automotive applications, providing intuitive and responsive touch screen controls for navigation, entertainment, and vehicle information systems.

Conclusion of ADS7846N/2K5

The ADS7846N/2K5 from Texas Instruments stands out as a versatile and reliable touch screen controller for 4-wire resistive touch screens. Its high resolution, flexible power supply options, and low power consumption make it an excellent choice for a wide range of applications, from consumer electronics to industrial and medical devices. The dual voltage reference and SPI interface further enhance its functionality and ease of integration. With its compliance to environmental and safety standards, the ADS7846N/2K5 ensures that it meets the stringent requirements of modern electronics manufacturing. Overall, the ADS7846N/2K5 offers a comprehensive solution for touch screen applications, delivering high performance and reliability in a compact and efficient package.