UDA1344TS/N2,518

Overview

The UDA1344TS/N2,518 is a low-voltage, low-power stereo audio CODEC with integrated DSP features. It employs bitstream conversion techniques for high-performance analog-to-digital and digital-to-analog conversion. The device supports sampling frequencies from 8 to 55 kHz with system clocks of 256fs, 384fs, or 512fs. It accepts I2S-bus, MSB-justified, and LSB-justified data formats up to 20 bits. Key electrical parameters include an ADC signal-to-noise ratio of 95 dB and a DAC signal-to-noise ratio of 100 dB. Power supply voltages range from 2.7 V to 3.6 V for all analog and digital domains. The component operates within an ambient temperature range of -40°C to +85°C.

Feature Summary

• Integrated digital sound processing capabilities including tone control, volume control, de-emphasis, and soft mute accessible via the L3 microcontroller interface.
• Supports multiple serial data input/output formats including I2S-bus, MSB-justified, and LSB-justified configurations with word lengths up to 20 bits.
• Features separate power control for ADC and DAC sections to optimize energy consumption in portable applications.
• Includes non-inverting ADC with integrated high-pass filter for DC offset cancellation and overload detection for record level control.

Applications

• Low-voltage portable digital audio equipment incorporating recording functions
• Playback devices requiring digital tone control and volume adjustment
• MiniDisc home stereo systems
• Portable audio players utilizing L3 microcontroller interface

Procurement Notes

Verify the specific ordering suffix /N2,518 against current NXP documentation to confirm package details and environmental compliance status. Confirm availability as this product line may have discontinued status. Ensure compatibility with existing PCB footprints for the SSOP28 package before procurement.

Selection Notes

Select this component for designs requiring a single-chip stereo solution with built-in DSP features. Ensure the host processor supports the required L3 interface or static pin configuration. Verify that the system clock generation can provide the necessary 256fs, 384fs, or 512fs rates. Check voltage levels to ensure they fall within the 2.7 V to 3.6 V operating range.

Part Context

The UDA1344TS belongs to the UDA134 family of audio CODECs from NXP Semiconductors. It is pin and function compatible with the UDA1340M when operated in L3 mode. This series is designed for low-power applications, distinguishing itself from higher-power industrial codecs by its focus on portable consumer electronics and battery-operated devices.

Replacement Considerations

The UDA1340M is explicitly noted as pin and function compatible in L3 mode. Verify if other members of the UDA134 family meet specific performance requirements such as SNR or power consumption differences.

FAQ

How is the control mode selected between L3 and static pins?

The control mode is determined by the logic levels on pins MC1 and MC2. Setting both LOW selects L3 mode, while setting both HIGH selects static pin mode.

What is the maximum data word length supported by the UDA1344TS?

The device supports data word lengths of up to 20 bits across various input formats including I2S-bus, MSB-justified, and LSB-justified.

Does the UDA1344TS require an external post-filter for the DAC output?

No, a post-filter is not required because the Filter Stream Digital-to-Analog Converter (FSDAC) provides inherent filtering functionality.