TS487IST

Overview

The TS487IST is a Class-A mono audio power amplifier manufactured by STMicroelectronics, housed in an 8-pin TSSOP package. It delivers 1 W of continuous RMS output power into an 8 Ω load at a 5 V supply voltage. The device operates within a supply voltage range of 2.5 V to 5.5 V and maintains a total harmonic distortion plus noise (THD+N) of 0.15%. It features a gain-bandwidth product of 2 MHz and draws a typical operating current of 6 mA. The unit supports single-ended input and functions reliably across a temperature range from -40°C to +85°C.

Feature Summary

• Ultra-low standby mode consumption reduces supply current to less than 10 nA via external control
• Internal thermal shutdown protection safeguards the device against overheating conditions
• Unity-gain stable architecture allows flexible configuration using external gain-setting resistors
• Rail-to-rail output capability ensures maximum dynamic range within the specified supply limits

Applications

• Mobile phones requiring high-quality audio with minimal component count
• Portable consumer electronics demanding low-power audio amplification
• Battery-operated devices utilizing single-supply operation

Procurement Notes

Verify the specific suffix 'I' and 'ST' against the manufacturer's official datasheet to confirm the exact pinout, package variant, and temperature grade. Ensure the ordering information matches the required MiniSO8 or TSSOP-8 form factor as defined in the latest documentation. Cross-reference the RoHS compliance status directly with the supplier's declaration to meet regulatory requirements for your specific region and application standards.

Selection Notes

Select this component when designing circuits that require a single-channel mono amplifier with rail-to-rail output capabilities. It is suitable for applications needing ultra-low quiescent current in standby modes and internal thermal protection. Consider the 2.5 V to 5.5 V supply range and 8 Ω load compatibility when matching it to your speaker and power source specifications.

Part Context

This part belongs to the TS4871 series of audio amplifiers designed by STMicroelectronics. The series focuses on minimizing external components while delivering high-fidelity sound for mobile and portable devices. The TS487IST represents a specific packaging and commercial grade variation within this family, optimized for surface-mount assembly processes.

Replacement Considerations

Consult the official datasheet for direct pin-compatible substitutes within the same series. Verify electrical parameters such as output power, supply voltage range, and package dimensions before substituting.