UDA1338H/N1,557

Overview

The UDA1338H is a multichannel audio coder-decoder featuring four single-ended analog-to-digital converters with programmable gain amplifiers and one voice ADC, alongside six differential digital-to-analog converters. It supports I2S, MSB-justified, LSB-justified, and multichannel data formats with word lengths up to 24 bits. The device operates on a 2.7 V to 3.6 V supply and includes digital sound processing features such as volume control, mute, and de-emphasis via L3-bus or I2C-bus interfaces.

Feature Summary

• Multichannel configuration supporting surround sound applications
• Integrated programmable gain amplifiers for audio inputs
• Digital sound processing including volume, mute, and de-emphasis
• Flexible microcontroller interface selection between L3-bus and I2C-bus

Applications

• Multichannel home audio-video systems
• Surround sound digital audio equipment
• Voice communication channels in audio devices

Procurement Notes

Verify the package type matches the QFP44 specification (SOT307-2) when sourcing components. Confirm that the operating voltage range of 2.7 V to 3.6 V aligns with the system design requirements. Ensure the control interface selection pin is correctly configured for either L3-bus or I2C-bus operation during integration.

Selection Notes

Select this component for designs requiring multiple independent audio input and output channels within a single integrated circuit. Consider the slave mode operation requirement where the system must provide the system clock or word clock. Evaluate the need for separate power control for ADC and DAC sections to optimize power consumption in battery-operated devices.

Part Context

The UDA1338H belongs to NXP's family of multichannel audio coder-decoders designed for high-quality audio processing. It utilizes bitstream conversion techniques to achieve high linearity and wide dynamic range. The device integrates decimation and interpolation filters along with noise shaping to minimize distortion and enhance signal quality in digital audio applications.

Replacement Considerations

Consult official NXP documentation for direct cross-references. Verify compatibility regarding pin assignments, supply voltage ranges, and control interface protocols before substituting with other audio codec models.