TS4990IQT

Overview

The TS4990IQT is a Class-AB audio power amplifier manufactured by STMicroelectronics, designed for demanding applications such as mobile phones. It delivers 1.2 W of continuous RMS output power into an 8 Ω load at 5 V supply voltage with 1% THD at 1 kHz. The device operates from a single supply ranging from 2.2 V to 5.5 V and features an active low standby mode that reduces supply current to less than 10 nA. Key electrical parameters include a gain-bandwidth product of 1.5 MHz, ultra-low distortion of 0.1%, and a PSRR of 62 dB at 217 Hz in grounded mode. It utilizes a DFN8 package.

Feature Summary

• Features an active low standby mode that significantly reduces power consumption during idle periods.
• Incorporates near-zero pop and click circuitry to ensure silent operation during power transitions.
• Includes internal thermal shutdown protection and short-circuit protection for enhanced reliability.

Applications

• Mobile phone speaker amplification
• Portable media players
• Handheld gaming devices

Procurement Notes

Verify the specific suffix 'Q' corresponds to the required tape and reel packaging configuration when ordering. Confirm the DFN8 package variant matches your PCB footprint requirements. Ensure the operating temperature range of -40°C to +85°C aligns with your system's environmental specifications before finalizing procurement.

Selection Notes

Select this component for designs requiring high efficiency and minimal external components in space-constrained environments. The differential input capability allows for flexible signal routing. Consider the 2 V/V gain setting options and verify compatibility with the host processor's audio interface levels.

Part Context

This part belongs to the TS4990 series of low-power audio amplifiers. The series is engineered to reduce the bill of materials by minimizing external passive components. It serves as a solution for mono audio output stages in battery-powered consumer electronics where size and power efficiency are critical constraints.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout and functional compatibility with any alternative Class-AB mono amplifiers if cross-referencing is necessary.