RT9120SGQV

Overview

The RT9120SGQV is a stereo, ultra-low noise, inductorless I²S Class-D audio amplifier from Richtek Technology. It features built-in Dynamic Range Control (DRC) and delivers up to 30W per channel into an 8Ω load at 24V supply. The device operates with high efficiency, exceeding 94% at 2x10W output, eliminating the need for heat sinks. It supports wide input voltage ranges from 4.5V to 26.4V and accepts digital audio inputs via I²S, Left-Justified, Right-Justified, or TDM formats with sample rates from 8kHz to 192kHz.

Feature Summary

• Integrates single-band DRC with programmable coefficients and flexible input mixing for enhanced audio processing.
• Utilizes inductorless architecture to minimize external component count and board space requirements.
• Includes comprehensive protection mechanisms such as over-temperature, over-current, over-voltage, and under-voltage lockout.
• Features pop-suppression capabilities to reduce speaker popping noises during power-up and power-down sequences.

Applications

• Liquid Crystal Display (LCD) televisions
• Home audio systems
• Entertainment devices
• Electronic musical equipment

Procurement Notes

Verify the specific suffix 'GQV' against the manufacturer's current datasheet to confirm package type and lead-free status. Confirm availability status as distribution channels may list obsolete or discontinued stock. Ensure compatibility with I²S interface requirements before procurement. Check for moisture sensitivity level handling instructions if storage conditions are uncertain.

Selection Notes

Select this component for applications requiring high-fidelity audio amplification without the bulk of inductors. It is suitable for systems needing integrated dynamic range control and digital audio interfaces. Consider the thermal performance benefits of the inductorless design for compact enclosures. Verify that the supply voltage range aligns with the system's power rails.

Part Context

This part belongs to the RT9120S series of Class-D audio amplifiers. The series is characterized by its ability to deliver high power output with minimal external components. It is designed for consumer electronics where space and efficiency are critical constraints. The QV suffix typically denotes a specific VQFN package variant optimized for surface mount assembly.

Replacement Considerations

Direct substitutes within the same family include other RT9120S variants with different suffixes indicating package or temperature grade differences. Cross-referencing with similar inductorless Class-D amplifiers from other manufacturers requires verifying pin compatibility and electrical specifications.