UDA1351TS/N1,512

Overview

The UDA1351TS is a single-chip IEC 958 audio decoder with an integrated stereo DAC, manufactured by NXP USA Inc. It employs bitstream conversion techniques and supports sampling frequencies from 28 kHz up to 100 kHz. The device features a 20-bit data path in the interpolator and operates on a 2.7 V to 3.6 V power supply. Key electrical parameters include a typical signal-to-noise ratio of 100 dB at both 48 kHz and 96 kHz sampling rates. Total harmonic distortion plus noise is specified at -85 dB (at 0 dB, 48 kHz) and -80 dB (at 0 dB, 96 kHz). The unit is housed in a 28-lead SSOP package.

Feature Summary

• Integrated IEC 958 decoder with on-chip amplifier for CMOS level conversion and PLL-based clock regeneration.
• Filter Stream DAC (FSDAC) architecture eliminating the need for analog post-filtering.
• L3 microcontroller interface supporting digital sound processing including volume control, bass boost, treble control, and soft mute.
• Automatic de-emphasis for 32.0, 44.1, and 48.0 kHz sample frequencies.

Applications

• Digital audio systems requiring IEC 958 input decoding.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via current documentation. Check for obsolescence notices as Philips Semiconductors product specifications may indicate lifecycle changes. Ensure pin compatibility if replacing with UDA1350ATS variants.

Selection Notes

Select this component for designs requiring direct IEC 958 SPDIF input without external decoders. The L3 interface allows flexible configuration of audio filters and mute states. Ensure power supply voltage remains within the 2.7 V to 3.6 V range. Consider the SSOP28 package constraints for PCB layout and thermal management during integration.

Part Context

The UDA1351TS is part of the UDA134/UDA135 series of audio CODECs and decoders from NXP (formerly Philips Semiconductors). It is functionally compatible with the UDA1350ATS. The datasheet supersedes the March 28, 2000 version, dated February 5, 2001. It serves as a specialized decoder for professional and consumer digital audio interfaces.

Replacement Considerations

The UDA1350ATS is fully pin and function compatible with the UDA1351TS. Verify package type (SSOP28) and supply voltage ranges when substituting.