TS4890IDT

Overview

The TS4890IDT is a rail-to-rail output audio power amplifier from STMicroelectronics, designed for high-quality audio applications. It operates from a supply voltage range of 2.2V to 5.5V and delivers 1W of continuous RMS output power into an 8Ω load at VCC=5V with THD=1% and f=1kHz. The device features ultra-low distortion of 0.1% at Pout=250mW RMS. It includes a standby mode that reduces supply current to less than 10nA and offers 75dB PSRR at 217Hz. The amplifier is unity-gain stable and housed in an SO-8 package.

Feature Summary

• Rail-to-rail output capability for maximum dynamic range
• Ultra-low consumption standby mode with active low control
• Integrated pop and click reduction circuitry
• Internal thermal shutdown protection

Applications

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

Procurement Notes

Verify the specific suffix 'DT' indicates tape and reel packaging when ordering. Confirm the operating temperature range is -40°C to +85°C for this variant. Ensure the design supports the required standby control signal polarity. Check for updated lifecycle status as older datasheets may not reflect current production availability.

Selection Notes

Select this component for single-supply applications requiring high efficiency and minimal external components. It is suitable where low distortion and high PSRR are critical. Consider the SO-8 package constraints for PCB layout. Verify that the load impedance matches the 8Ω specification for optimal power delivery.

Part Context

The TS4890 belongs to ST's family of low-voltage audio amplifiers. It is often used in portable electronics where battery life and sound quality are priorities. The device complements other ST audio solutions by offering a balance of performance and power consumption.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.