Texas Instruments

ADS7845E/2K5

ADS7845E/2K5 Description

The ADS7845E/2K5 is a high-performance, 12-bit analog-to-digital converter (ADC) designed specifically for 5-wire resistive touchscreen applications. Manufactured by Texas Instruments, this device is part of the Data Acquisition ICs category and is known for its robustness and efficiency in various electronic systems. The ADS7845E/2K5 operates within a wide supply voltage range of 2.7V to 5.5V and consumes a minimal supply current of 280 µA, making it suitable for low-power applications. It features an external voltage reference, which allows for greater flexibility and precision in measurement. The device is available in a surface mount package, specifically in a Tape & Reel (TR) format, and is compliant with both REACH and ROHS3 standards, ensuring environmental safety and regulatory adherence.

ADS7845E/2K5 Features

• 12-Bit Resolution: The ADS7845E/2K5 offers a 12-bit resolution, providing high accuracy and precision in converting analog signals from the touchscreen into digital data.
• 5-Wire Resistive Touchscreen Support: This ADC is optimized for 5-wire resistive touchscreens, which are known for their durability and accuracy, making it ideal for rugged and precise applications.
• Wide Supply Voltage Range: With a supply voltage range of 2.7V to 5.5V, the ADS7845E/2K5 can operate in a variety of power environments, enhancing its versatility.
• Low Power Consumption: Consuming only 280 µA, this device is highly energy-efficient, making it suitable for battery-powered and low-power systems.
• External Voltage Reference: The use of an external voltage reference allows for higher accuracy and flexibility in calibration and measurement.
• Serial Interface: The ADS7845E/2K5 features a serial interface, simplifying communication with microcontrollers and other digital systems.
• Surface Mount Packaging: Available in a surface mount package, the ADS7845E/2K5 is easy to integrate into compact and space-constrained designs.
• Compliance and Safety: The device is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards.
• Moisture Sensitivity Level: With an MSL rating of 2 (1 Year), the ADS7845E/2K5 is suitable for a wide range of manufacturing processes and environments.

ADS7845E/2K5 Applications

The ADS7845E/2K5 is ideal for applications requiring precise and reliable touchscreen control, particularly in industrial and consumer electronics. Some specific use cases include:

• Industrial Control Panels: The robustness and precision of the ADS7845E/2K5 make it suitable for industrial control panels where durability and accuracy are critical.
• Consumer Electronics: In devices such as smartphones, tablets, and portable gaming consoles, the ADS7845E/2K5 provides reliable touchscreen functionality with minimal power consumption.
• Automotive Systems: The wide voltage range and low power consumption make this ADC ideal for automotive infotainment systems, where reliability and efficiency are paramount.
• Medical Devices: For medical equipment requiring precise user input, the ADS7845E/2K5 ensures accurate and reliable touchscreen performance.

Conclusion of ADS7845E/2K5

The ADS7845E/2K5 from Texas Instruments stands out as a reliable and efficient solution for 5-wire resistive touchscreen applications. Its 12-bit resolution, wide supply voltage range, and low power consumption make it a versatile choice for a variety of electronic systems. The device's compliance with environmental and safety standards further enhances its appeal. Whether used in industrial control panels, consumer electronics, automotive systems, or medical devices, the ADS7845E/2K5 delivers high performance and reliability, making it a top choice for engineers and designers in the electronics industry.