TSC2102IDAR

Overview

The TSC2102IDAR is a programmable resistive touch screen controller manufactured by Texas Instruments. It integrates a stereo audio codec with a headphone amplifier and a phase-locked loop (PLL). The device supports 4-wire touch screens with a sampling rate of 125 kS/s and offers configurable resolutions of 8, 10, or 12 bits. It operates on a supply voltage range of 2.7 V to 3.6 V and features multiple interface options including SPI, I2S, and serial modes. The component is housed in a 32-TSSOP package and is designed for operation within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated stereo audio codec with headphone amplifier and internal PLL
• Programmable 4-wire resistive touch screen controller
• Configurable resolution: 8-bit, 10-bit, or 12-bit
• High-speed sampling at 125 kS/s for touch input

Applications

• Portable multimedia devices requiring integrated touch and audio
• Industrial control panels with resistive touch interfaces
• Automotive infotainment systems operating in extended temperatures

Procurement Notes

Verify the suffix 'IDAR' corresponds to the tape-and-reel packaging variant rather than the tube-packaged 'IDA'. Confirm the specific revision level matches the design requirements. Ensure ESD handling protocols are followed due to moisture sensitivity classification. Cross-reference the datasheet version to validate pinout compatibility with existing PCB layouts.

Selection Notes

Select this model when both touch sensing and stereo audio output are required in a single component. The internal PLL reduces external clocking needs. Verify that the host processor supports the desired interface mode (SPI or I2S). Ensure the power supply can maintain stability within the 2.7 V to 3.6 V range during peak audio and touch sampling loads.

Part Context

This part belongs to the TSC2102 family, which combines touch controller functionality with audio capabilities. It serves as an alternative to separate touch controllers and audio codecs, reducing board space. The IDAR suffix indicates a reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

The TSC2100 series offers similar integration but may differ in package type or specific audio features. Verify pin-to-pin compatibility before substitution. Check if the replacement supports the same sampling rates and interface configurations required by the system.