UDA1345TS/N2,112

Overview

The UDA1345TS is a stereo audio CODEC integrating an ADC and DAC with bitstream conversion. It operates on a 2.4 V to 3.6 V supply, consuming 64 mW in record/playback mode. The device supports sampling frequencies from 8 kHz to 100 kHz using system clocks of 256fs, 384fs, or 512fs. It features a signal-to-noise ratio of up to 96 dB for the ADC and 100 dB for the DAC at 44.1 kHz. Digital interfaces include I2S-bus (up to 24 bits), MSB-justified (up to 20 bits), and LSB-justified formats (16, 18, 20 bits). Control is managed via L3 microcontroller interface or static pins.

Feature Summary

• Supports multiple digital audio input/output formats including I2S-bus, MSB-justified, and LSB-justified serial data.
• Integrates digital sound processing features such as dB-linear volume control, de-emphasis, and soft mute under L3 microcontroller mode.
• Features separate power control for ADC and DAC sections to optimize energy efficiency.
• Includes integrated high-pass filter for DC offset cancellation and overload detection for record level control.

Applications

• Low-voltage portable digital audio equipment
• Digital audio recording devices
• Audio playback systems

Procurement Notes

Verify component authenticity through authorized NXP distributors or official channels. Confirm package integrity and pin alignment against SSOP28 specifications. Review datasheet revisions to ensure compatibility with current design requirements. Validate operating conditions against absolute maximum ratings prior to integration.

Selection Notes

Select this component for applications requiring low-power stereo audio conversion with flexible digital interface options. Ensure system clock availability matches supported frequencies of 256fs, 384fs, or 512fs. Verify that the host controller supports the L3 interface protocol if dynamic configuration is required. Check voltage levels to ensure compatibility with the 2.4 V to 3.6 V supply range.

Part Context

The UDA1345TS is part of NXP's economy audio CODEC family. It shares pin and function compatibility with the UDA1344TS and UDA1340M in L3 mode. The device utilizes bitstream conversion techniques to achieve high audio fidelity while maintaining low power consumption suitable for battery-operated devices.

Replacement Considerations

UDA1344TS is confirmed as a pin and function compatible replacement in L3 microcontroller mode. Verify specific feature differences, such as the absence of bass-boost and treble controls in the UDA1345TS compared to other variants.