TS4890ID

Overview

The TS4890ID is a mono audio power amplifier manufactured by STMicroelectronics, designed for high-quality audio applications. It operates from a single supply voltage ranging from 2.2V to 5.5V and delivers 1W of continuous RMS output power into an 8-ohm load at 5V with 1% THD. The device features ultra-low distortion of 0.1% at 250mW RMS output and includes pop and click reduction circuitry. It offers unity-gain stability and can be configured via external gain-setting resistors.

Feature Summary

• Ultra-low consumption in standby mode with supply current reduced to less than 10nA via external control
• Integrated thermal shutdown protection for enhanced reliability
• Pop and click reduction circuitry minimizes audible noise during power-up and power-down transitions
• High power supply rejection ratio (PSRR) of 75dB at 217Hz across the operating voltage range

Applications

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

Procurement Notes

Verify the specific package type and temperature range against the official datasheet before procurement. Ensure the design supports the required standby mode control logic to achieve the specified low-power state. Confirm that the application environment remains within the -40°C to +85°C operating temperature limits defined for this component.

Selection Notes

Select this component for designs requiring a single-supply, class-A audio amplifier with minimal external components. It is suitable for battery-powered portable electronics where low standby current and high sound quality are critical. Consider the SO8 package availability and ensure the PCB layout accommodates the thermal requirements for 1W output power delivery.

Part Context

The TS4890ID belongs to the TS4890 family of audio amplifiers from STMicroelectronics. This series is engineered to minimize external component count while delivering high-fidelity audio performance. The family includes variants available in different packages such as MiniSO8 and DFN8, catering to space-constrained mobile and consumer electronic designs.

Replacement Considerations

Check for direct pin-compatible substitutes within the same product family, such as TS4890IST or TS4890IQT, which offer identical electrical characteristics but differ in packaging format. Verify that any replacement maintains the same operating voltage range and thermal protection features.