TSC2046EIPWR

Overview

The TSC2046EIPWR is a low-voltage, four-wire resistive touch screen controller manufactured by Texas Instruments. It features a 12-bit analog-to-digital converter (ADC) with a sampling rate of 125 kS/s and operates on a supply voltage range of 2.2 V to 5.25 V. The device supports serial communication via SPI and SSI interfaces. Key internal features include an integrated 2.5 V reference voltage source, which can be disabled to conserve power. The component is housed in a 16-pin TSSOP package and is designed for portable applications requiring direct battery measurement and temperature sensing capabilities.

Feature Summary

• 12-bit resolution ADC with 125 kS/s sampling rate
• Integrated 2.5 V reference voltage source for auxiliary inputs
• SPI/SSI serial interface compatible with low-voltage digital I/O
• Direct battery monitoring and on-chip temperature measurement modes

Applications

• Portable consumer electronics with resistive touch displays
• Wireless communication devices and handheld instruments
• Medical equipment requiring precise touch input and sensor data

Procurement Notes

Verify the current lifecycle status before procurement, as availability may vary. Confirm that the TSSOP-16 package dimensions match the target PCB footprint. Ensure the design supports the required 2.2 V to 5.25 V supply range and SPI/SSI timing specifications for reliable operation.

Selection Notes

Select this component when a drop-in replacement for ADS7846 is needed with lower voltage I/O support. Consider the integrated 2.5 V reference if external references are not available. Verify that the 12-bit resolution and 125 kS/s speed meet the system's touch response and accuracy requirements.

Part Context

The TSC2046EIPWR belongs to the TSC2046 family of touch screen controllers from Texas Instruments. It serves as a modern alternative to older models like the ADS7846, offering improved low-voltage compatibility while maintaining pin-for-pin functionality. The 'E' suffix typically denotes an extended temperature range or specific manufacturing lot characteristics within the TI product line.

Replacement Considerations

The TSC2046IPWRG4 is a documented equivalent variant within the same family. Both share identical core electrical specifications and pinouts, allowing for potential interchangeability in designs where the specific suffix variations do not impact system constraints.