TS4974IQT

Overview

The TS4974IQT is a Class-AB audio power amplifier manufactured by STMicroelectronics, designed for high-quality audio applications. It operates from a single supply voltage ranging from 2.5 V to 5.5 V and delivers up to 1 W of output power into an 8 Ω load at 5 V with 1% THD. The device features a fully differential input/output architecture, integrated digital volume control with 16 steps, and ultra-low standby current consumption. It is housed in a compact DFN10 (3x3 mm) package.

Feature Summary

• Integrated 16-step digital volume control via discrete UP/DOWN pins
• Fully differential input and output configuration for high noise immunity
• Ultra-fast start-up time with near-zero pop and click performance
• Internal thermal shutdown protection and active low standby mode

Applications

• Mobile phones (cellular / cordless)
• PDAs
• Laptop/notebook computers
• Portable audio devices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches project requirements. Check datasheet revision history for any updates to electrical characteristics or pin configurations before finalizing design integration.

Selection Notes

Select this component for designs requiring differential signaling to minimize common-mode noise. Ensure the load impedance meets the minimum 8 Ω requirement for optimal power delivery. Verify that the system power supply voltage remains within the 2.5 V to 5.5 V operating range to maintain specified performance levels.

Part Context

This part belongs to the TS4974 family of mono audio power amplifiers. It is specifically engineered for portable consumer electronics where space efficiency and audio fidelity are critical. The DFN10 package allows for compact PCB layouts suitable for modern mobile devices.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.