TSC2102BIDA

Overview

The TSC2102BIDA is a programmable touch screen controller with an integrated stereo audio DAC and headphone amplifier. 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. Power supply requirements 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 sampling rates up to 125 kS/s.
• Stereo audio DAC with 97 dB SNR, supporting I2S, DSP, and left/right justified formats at up to 48 ksps.
• On-chip processor reduces host overhead via automated modes, programmable averaging, and autonomous timing control.
• Includes battery voltage monitors (up to 6 V input), on-chip temperature sensor, and auxiliary analog input.

Applications

• Personal Digital Assistants
• Smart Cellular Phones
• MP3 Players

Procurement Notes

Verify the specific ordering suffix 'B' against the official Texas Instruments datasheet SLAS379A. The standard documentation lists 'TSC2102IDA' as the primary part number for the TSSOP-32 package. Confirm if the 'B' suffix denotes a specific tape and reel configuration or a variant not explicitly detailed in the provided public reference material.

Selection Notes

Select this component for applications requiring combined touch input and low-power audio playback. Ensure the host system supports SPI communication for touch data and provides appropriate serial audio clocks (MCLK, BCLK, LRCK). Verify that the power supply rails match the specified ranges: 2.7–3.6 V for AVDD/DRVDD/IOVDD and 1.525–1.95 V for DVDD.

Part Context

The TSC2102 belongs to the TSC210x family of highly integrated controllers from Texas Instruments. It combines resistive touch sensing capabilities with a high-performance audio codec. This integration allows for reduced board space and lower system cost in portable devices by eliminating the need for separate touch and audio components.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult the TI product selection guide for compatible alternatives within the TSC210x series, such as the TSC2100 or TSC2101, ensuring pinout and feature compatibility.