TSC2004IRTJT

Overview

The TSC2004IRTJT is a Texas Instruments resistive touch screen controller featuring a 12-bit analog-to-digital converter and an integrated temperature sensor. It operates on a single supply voltage ranging from 1.8 V to 3.6 V with a typical operating current of 500 µA. The device supports serial communication via SPI, I²C, or Microwire interfaces. It includes a built-in 12-bit DAC for driving the touch panel and offers programmable conversion rates up to 125 kS/s. The component is housed in a 16-pin VQFN package and is rated for operation between -40°C and +85°C.

Feature Summary

• Integrated 12-bit ADC and 12-bit DAC for precise touch coordinate acquisition and panel drive
• Supports multiple digital interfaces including SPI, I²C, and Microwire
• Built-in temperature sensor for environmental monitoring
• Low power consumption with 500 µA typical operating current at 3.0 V

Applications

• Resistive touch screen interfaces in portable electronics
• Industrial control panels requiring low-power sensing
• Automotive infotainment systems with temperature compensation needs

Procurement Notes

Verify the suffix 'IRTJT' corresponds to the specific tape-and-reel packaging and temperature grade. Confirm interface compatibility with the host processor's available serial ports. Ensure supply voltage levels match the 1.8 V to 3.6 V operational range before integration.

Selection Notes

Select this model when a 12-bit resolution is required for high-precision touch applications. Choose over lower-resolution variants if integrated temperature sensing is necessary for system calibration. Verify that the host system supports the desired serial protocol (SPI/I²C) as pin configurations may vary based on interface selection.

Part Context

This component belongs to the TSC2000 series of nano-power touch screen controllers. It shares architectural similarities with the TSC2005 and TSC2007 but differs in package type and specific interface capabilities. The series is designed for battery-operated devices requiring efficient power management and accurate position tracking.

Replacement Considerations

Direct replacements include the TSC2005IRTJR and TSC2007IRTJT within the same family. Verify pinout compatibility and software register mapping before substitution. Alternative packages such as SSOP or QFN may require schematic adjustments.