MAX98372ETJ+T

Audio Amplifiers Overview

The MAX98372ETJ+T is a mono Class D digital input audio amplifier manufactured by Analog Devices Inc./Maxim Integrated. It features dynamic headroom tracking (DHT) and brownout protection to maintain consistent listening experience during supply voltage variations. The device supports I2S, left-justified, and TDM formats with sample rates from 32kHz to 96kHz. Operating on a 5.5V to 18V supply range, it delivers up to 19W into an 8Ω load at 10% THD+N. Key electrical parameters include a 110dB A-weighted dynamic range, 91% efficiency at 10W into 8Ω, and integrated thermal foldback protection.

Audio Amplifiers Feature Summary

• Dynamic Headroom Tracking optimizes available headroom as power supply voltage varies due to transients or battery decline.
• Flexible Digital Audio Interface accepts I2S, left-justified, and TDM formats without requiring an external MCLK signal.
• Active emissions limiting with edge rate control minimizes EMI and eliminates the need for traditional output filtering.
• Integrated thermal foldback automatically reduces output power above user-specified temperatures to ensure robust operation.

Audio Amplifiers Applications

• Tablets
• Notebook Computers
• Soundbars

Audio Amplifiers Procurement Notes

Verify the specific suffix ETJ+T corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the component meets RoHS compliance standards applicable to your manufacturing region. Ensure the ordering documentation explicitly references the Analog Devices/Maxim Integrated manufacturer designation to avoid counterfeit parts. Cross-reference the date code against current production status to confirm availability.

Audio Amplifiers Selection Notes

Select this component when a single-channel high-efficiency amplifier is required for portable electronics. The integrated DSP capabilities and flexible digital interface simplify system architecture by reducing external component count. Consider the WLP package for space-constrained designs where thermal management can be handled via board layout. Verify that the host processor supports the required digital audio protocols and sampling rates.

Audio Amplifiers Part Context

This part belongs to the MAX983xx series of digital input Class D amplifiers designed for mobile and consumer audio applications. The series emphasizes high efficiency and low electromagnetic interference through advanced modulation techniques. The MAX98372 specifically targets mono speaker driving in devices like tablets and soundbars, offering integrated protection features suitable for battery-powered systems.

Audio Amplifiers Replacement Considerations

MAX98372ETJ+T

Audio Amplifiers FAQ

Does the MAX98372 require an external master clock (MCLK) for PCM communication?

No, the unique clocking structure eliminates the need for an external MCLK signal typically required for PCM communication, which reduces pin count and simplifies board layout.

How does the Dynamic Headroom Tracking (DHT) function improve audio performance?

DHT automatically optimizes the headroom available to the Class D amplifier as the power supply voltage varies due to sudden transients or declining battery life, maintaining a consistent listening experience.