TS4657IQT

Overview

The TS4657IQT is a stereo digital-to-analog converter (DAC) with an integrated audio line driver manufactured by STMicroelectronics. It operates on a single 3.0 V to 5.5 V supply, supporting 16- to 24-bit audio data formats and sample rates from 32 kHz to 48 kHz. The device features a 95 dB A-weighted signal-to-noise ratio at 48 kHz and delivers a 2.2 Vrms output level. It utilizes an internal negative power supply to enable ground-referenced, capacitor-less outputs. The component is housed in a 20-VFQFN package with dimensions of 4 mm x 4 mm.

Feature Summary

• Integrated 16-bit multi-bit sigma-delta DAC with oversampling digital interpolation filters
• Capacitor-less output stage using internal self-generated negative power supply
• Supports I²S, right-justified, and left-justified digital audio interfaces
• Low power consumption of 7.4 mA at 3.0 V supply voltage

Applications

• Digital set-top boxes
• DVD players
• Digital TVs
• Notebooks
• Portable audio equipment

Procurement Notes

Verify the TS4657IQT part status as discontinued or obsolete through official STMicroelectronics channels before procurement planning. Confirm that the QFN20 Tape & Reel packaging matches system assembly requirements. Ensure compatibility with existing BOM constraints regarding end-of-life components for long-term production stability.

Selection Notes

Select this component for applications requiring a single-supply stereo DAC with high SNR and minimal external passive components. Verify that the operating temperature range of -40°C to +85°C meets environmental specifications. Ensure the digital interface timing aligns with the master clock and bit clock ratios defined in the datasheet for the chosen audio format.

Part Context

The TS4657IQT belongs to the TS4657 series of single-supply stereo digital audio line drivers. It integrates a DAC and line driver to eliminate the need for external regulators and coupling capacitors. The 'I' suffix indicates an industrial temperature grade, while 'QT' denotes the QFN20 tape and reel packaging configuration.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult STMicroelectronics for current alternative recommendations if the TS4657IQT is no longer sourced.