UDA1345TS/N2,118

Overview

The UDA1345TS is a single-chip stereo audio CODEC integrating Analog-to-Digital and Digital-to-Analog converters with bitstream conversion. It operates on a 2.4 to 3.6 V supply, supporting sampling frequencies from 8 to 100 kHz. The device features a 5 V tolerant digital interface compatible with I2S, MSB-justified, and LSB-justified formats up to 24 bits. Key specifications include a typical signal-to-noise ratio of 96 dB for the ADC at 44.1 kHz and 100 dB for the DAC. Power consumption is 64 mW in record/playback mode and drops to 2.2 mW in power-down. Control is managed via L3 microcontroller interface or static pins.

Feature Summary

• Integrates stereo ADC and DAC with sigma-delta modulation and filter stream architecture
• Supports multiple digital audio interfaces including I2S and various justified formats
• Includes digital sound processing such as volume control, de-emphasis, and soft mute
• Features low power operation with independent power control for ADC and DAC sections

Applications

• Portable digital audio equipment requiring recording and playback functions
• Low-voltage consumer audio systems
• Embedded audio interfaces utilizing L3 microcontroller control

Procurement Notes

Verify the specific ordering suffix N2,118 against current NXP documentation to confirm package orientation and reel specifications. Confirm that the SSOP28 package version SOT341-1 matches the target PCB footprint requirements. Ensure compatibility with existing system clocks and voltage levels before integration.

Selection Notes

Select this component for applications requiring a cost-effective stereo audio solution with integrated signal processing. Verify that the required sampling rates fall within the 8 to 100 kHz range. Ensure the system design accommodates the 2.4 to 3.6 V supply voltage and utilizes either the L3 interface or static pin configuration for control.

Part Context

The UDA1345TS is part of NXP's economy audio CODEC family. It maintains pin and function compatibility with the UDA1344TS and UDA1340M in L3 mode. Unlike the UDA1344TS, it excludes bass-boost and treble controls. It serves as a direct replacement for legacy designs requiring similar audio performance and interface capabilities.

Replacement Considerations

The UDA1345TS is pin and function compatible with the UDA1344TS and UDA1340M when operating in L3 microcontroller mode. Designers should verify that the absence of bass-boost and treble features in the UDA1345TS does not impact existing application requirements previously met by the UDA1344TS.