Texas Instruments

ADS7843E/2K5G4

ADS7844E/2K5G4 Description

The ADS7843E/2K5G4 is a high-performance 12-bit touch screen controller designed for 4-wire resistive touch screens. Manufactured by Texas Instruments, this IC is optimized for surface mount applications and is packaged in a 16-lead small outline package (16SSOP), making it ideal for compact and space-constrained designs. The ADS7843E/2K5G4 operates within a supply voltage range of 2.7V to 5V and draws a minimal supply current of 2.5 µA, ensuring energy efficiency and long battery life in portable devices.

This controller is equipped with an external voltage reference, allowing for precise and accurate touch detection. The serial interface facilitates easy communication with microcontrollers and other system components, simplifying integration into various electronic systems. The ADS7843E/2K5G4 is REACH unaffected and RoHS3 compliant, ensuring it meets stringent environmental and safety standards. Additionally, it is classified under ECCN EAR99 and HTSUS 8542.39.0001, making it suitable for a wide range of applications without export restrictions.

ADS7843E/2K5G4 Features

• 12-Bit Resolution: Provides high-precision touch detection, ensuring accurate and responsive user interactions.
• 4-Wire Resistive Touch Screen Support: Compatible with standard 4-wire resistive touch screens, making it versatile for various display sizes and configurations.
• Low Power Consumption: With a supply current of only 2.5 µA, it is ideal for battery-powered and low-power applications, extending operational time.
• Wide Supply Voltage Range: Operates between 2.7V and 5V, offering flexibility in power supply options and compatibility with different power sources.
• External Voltage Reference: Ensures consistent and accurate touch detection by allowing the use of an external reference voltage.
• Serial Interface: Simplifies communication with microcontrollers and other system components, reducing design complexity and improving system reliability.
• Surface Mount Packaging: The 16SSOP package is suitable for automated assembly processes, enhancing manufacturing efficiency and reliability.
• Environmental Compliance: REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards.
• Moisture Sensitivity Level (MSL) 2 (1 Year): Suitable for storage and handling in various environmental conditions, reducing the risk of moisture-related damage.

ADS7843E/2K5G4 Applications

The ADS7843E/2K5G4 is ideal for a variety of applications where precise touch screen control is required. Its low power consumption and compact size make it particularly suitable for portable devices such as:

• Handheld Computers: Provides accurate touch screen control in compact and energy-efficient devices.
• PDAs and Smartphones: Ensures responsive touch screen performance while minimizing power consumption.
• Industrial Control Panels: Offers reliable touch screen functionality in rugged and industrial environments.
• Medical Devices: Provides precise touch control in medical equipment where accuracy and reliability are critical.
• Consumer Electronics: Enhances user experience in devices such as tablets, e-readers, and other touch-enabled consumer products.

Conclusion of ADS7843E/2K5G4

The ADS7843E/2K5G4 is a robust and versatile touch screen controller that offers high precision and low power consumption. Its compatibility with 4-wire resistive touch screens and wide supply voltage range make it suitable for a variety of applications. The serial interface and surface mount packaging further simplify integration into modern electronic systems. With its environmental compliance and moisture sensitivity level, the ADS7843E/2K5G4 is a reliable choice for designers seeking a high-performance touch screen controller. Whether used in portable devices, industrial equipment, or consumer electronics, the ADS7843E/2K5G4 delivers exceptional performance and reliability.