UDA1342TS/N1,518

Overview

The UDA1342TS is a discontinued single-chip audio CODEC by NXP Semiconductors, housed in an SSOP28 package. It integrates a 4-channel analog-to-digital converter and a 2-channel digital-to-analog converter using bitstream conversion techniques. The device operates on a 2.7 to 3.6 V power supply with 5 V tolerant digital inputs. It supports sample frequencies from 16 to 110 kHz and features a 24-bit data path. Control is managed via L3-bus, I2C-bus, or static pin interfaces. Key specifications include a signal-to-noise ratio of 100 dB at 48 kHz and total harmonic distortion-plus-noise of -90 dB.

Feature Summary

• Integrates dual stereo ADCs with programmable gain amplifiers and double differential input configuration for enhanced sound quality.
• Includes digital signal processing capabilities such as volume control, mute, bass boost, treble, and de-emphasis.
• Supports multiple digital interface formats including I2S, MSB-justified, and LSB-justified with word lengths up to 24 bits.
• Features a filter stream DAC that eliminates the need for external analog post-filtering.

Applications

• MiniDisc (MD) home stereo applications
• Portable MiniDisc recording devices
• Low-voltage low-power portable digital audio equipment

Procurement Notes

This component is officially marked as No Longer Manufactured. Verification should focus on historical datasheets and environmental compliance records rather than current availability. Check specific ordering suffixes like /N1,518 for lead-free status and RoHS compliance details in legacy documentation.

Selection Notes

Select this part only for legacy maintenance or historical reference designs requiring a single-chip stereo audio codec with integrated DSP. Ensure the system design accommodates the discontinued status and verify compatibility with existing L3-bus or I2C control architectures used in older MiniDisc platforms.

Part Context

The UDA1342TS belongs to the UDA134x family of audio CODECs from Philips/NXP. It serves as a successor to the UDA1341TS with high pin compatibility. It is distinct from the UDA1340 and UDA1343 models which offer different feature sets or packaging options within the same product lineage.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation. Designers should evaluate modern audio CODECs from NXP or other manufacturers that support similar I2S interfaces and digital processing features, ensuring voltage levels and pinouts are adapted accordingly.