TSC2102BIDAR

Overview

The TSC2102BIDAR is a programmable touch screen controller with an integrated stereo audio DAC and headphone amplifier manufactured by Texas Instruments. It features a 4-wire resistive touch screen interface with a 12-bit SAR ADC, supporting sampling rates up to 125 kS/s. The device includes a stereo audio playback section capable of 48 ksps operation with 97-dB SNR and an on-chip PLL for clock generation. Power supply ranges are 2.7 V to 3.6 V for analog sections and 1.525 V to 1.95 V for the digital core. It operates within a temperature range of -40°C to +85°C and is housed in a 32-lead TSSOP package.

Feature Summary

• Integrated 4-wire resistive touch screen controller with programmable resolution (8/10/12 bits) and averaging
• Stereo audio DAC with 97-dB SNR, headphone amplifier, and support for I2S/DSP/LJF/RJF formats
• On-chip PLL for flexible audio clock generation and direct battery measurement inputs
• Standard SPI serial interface with glueless compatibility for OMAP and Xscale processors

Applications

• Personal Digital Assistants
• Smart Cellular Phones
• MP3 Players

Procurement Notes

Verify the 'B' suffix against official documentation to confirm specific binning or testing criteria, as standard datasheets primarily list the IDA and IDAR variants. Ensure the tape and reel transport media matches the 'R' suffix designation. Confirm moisture sensitivity level and reflow soldering profiles align with assembly requirements.

Selection Notes

Select this component when a combined touch input and low-power audio output solution is required for portable devices. The internal processor reduces host CPU overhead through automated touch modes. Verify that the host system supports the required SPI and audio serial interfaces (I2S/DSP). Ensure power rails match the specified AVDD/DVDD ranges.

Part Context

The TSC2102 belongs to the TSC210x family of highly integrated controllers from Texas Instruments. It shares architectural similarities with the TSC2100 and TSC2101 but distinguishes itself with specific audio DAC capabilities and touch processing features. The IDAR variant denotes the tape and reel packaging option for automated surface-mount assembly.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.