TSC2302IRGZG4

Overview

The TSC2302IRGZG4 is a programmable touch screen controller with an integrated stereo audio codec manufactured by Texas Instruments. It features a 12-bit SAR ADC for resistive touch screens with sampling rates up to 125 kHz and a 20-bit delta-sigma audio codec supporting up to 48 kHz sampling. The device operates on a single 2.7 V to 3.6 V supply, includes battery monitoring inputs capable of handling up to 6 V, and provides on-chip temperature measurement with 0.3°C resolution. Communication is handled via SPI for control and I2S for digital audio data.

Feature Summary

• Integrated 12-bit SAR ADC with programmable 8-, 10-, or 12-bit resolution and sampling rates up to 125 kHz
• High-performance 20-bit stereo audio codec with 98 dB dynamic range and 48 kHz sampling rate
• Stereo 16 W headphone driver with bass/midrange/treble EQ effects processing
• Dual battery monitor inputs supporting voltages up to 6 V and on-chip temperature sensor

Applications

• Personal Digital Assistants (PDAs)
• Cellular phones
• MP3 players
• Smartphones
• Internet appliances

Procurement Notes

Verify the 'G4' suffix indicates lead-free compliance and RoHS conformity as per Texas Instruments standards. Confirm the package type is the 48-lead QFN (RGZ). Ensure the operating temperature range matches the 'I' designation (-40°C to +85°C). Check current production status and availability through authorized distributors.

Selection Notes

Select this component when a combined touch interface and high-fidelity audio solution is required in a single package. It is suitable for applications needing ratiometric touch conversion and low-power operation. Consider the 48-pin QFN footprint for PCB layout constraints. Verify that the host system supports both SPI and I2S interfaces for full functionality.

Part Context

The TSC2302 belongs to the TSC series of analog interface circuits from Texas Instruments. It is designed to reduce host CPU overhead by integrating touch processing and audio codecs. The device simplifies system design by combining multiple peripheral functions into one chip, reducing board space and component count compared to discrete solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Texas Instruments application notes or distributor cross-reference tools for potential alternatives based on specific pinout and electrical requirements.