TS482ID

Overview

The TS482ID is a dual Class-AB audio power amplifier manufactured by STMicroelectronics, designed to drive stereo headsets with impedances of 16 or 32 ohms. It operates from a single supply voltage ranging from 2V to 5.5V. The device delivers up to 107mW per channel into a 16-ohm load at 5V with 0.1% THD+N. Key electrical parameters include a gain-bandwidth product of 2.2 MHz, input bias current of 500 nA, and quiescent operating current of 5.5 mA. It features rail-to-rail input and output capabilities, unity-gain stability, and an input offset voltage of 5 mV.

Feature Summary

• Rail-to-rail input and output stages enable operation at low supply voltages while maximizing dynamic range for headphone driving applications.
• Integrated switch ON/OFF click reduction circuitry minimizes audible noise during power transitions, enhancing user experience in portable devices.
• High signal-to-noise ratio and high power supply rejection ratio ensure clean audio reproduction even in electrically noisy environments.

Applications

• Stereo headset amplification for mobile phones and handheld devices
• Portable media players requiring low-voltage audio processing
• MP3 players and digital audio recorders

Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade (-40°C to +85°C) compared to commercial variants. Confirm the package type matches the design requirements, as the TS482 family is available in SO-8, MiniSO-8, and DFN8 packages. Ensure the ordering part number aligns with the required tape and reel or cut tape quantities specified by the distributor.

Selection Notes

Select this component when designing systems that require a dual-channel amplifier for stereo headphones with a single power supply. It is suitable for applications needing high efficiency and low distortion at low voltages. Consider the thermal performance in the chosen package if driving low-impedance loads at maximum volume. Verify that the external gain-setting resistors match the desired audio output level.

Part Context

The TS482 belongs to STMicroelectronics' portfolio of audio power amplifiers, specifically targeting portable consumer electronics. It complements other audio solutions by offering a compact, low-power alternative for battery-operated devices. The series is known for its ability to deliver high-quality sound with minimal external components, fitting into space-constrained designs common in modern mobile hardware.

Replacement Considerations

Check for direct substitutes within the TS482 family, such as TS482M (MiniSO-8) or TS482T (DFN8), which share identical electrical characteristics but differ in package footprint. Verify pin compatibility before swapping packages to avoid PCB redesign. Cross-reference with other ST stereo headphone amplifiers if different power levels or packaging options are required.