MAX98357AEWL+T

Audio Amplifiers Overview

The MAX98357AEWL+T is a digital PCM input Class D amplifier in a 9-pin WLP package. It operates on a single supply from 2.5V to 5.5V, delivering 3.2W into 4Ω at 5V. The device accepts I2S data with sample rates between 8kHz and 96kHz. Key electrical parameters include 2.4mA quiescent current, 92% efficiency, and 0.013% THD+N. It features extensive click-and-pop reduction, short-circuit protection, and thermal shutdown.

Audio Amplifiers Feature Summary

• Eliminates the need for an external master clock signal by automatically recognizing various PCM and TDM clocking schemes.
• Utilizes sophisticated edge-rate control and spread-spectrum modulation to achieve filterless Class D outputs with significantly reduced EMI.
• Incorporates comprehensive click-and-pop suppression circuitry along with robust short-circuit and thermal overload protection mechanisms.

Audio Amplifiers Applications

• Smart speakers
• Notebook computers
• IoT devices
• Gaming devices (Audio and Haptics)
• Smartphones

Audio Amplifiers Procurement Notes

Verify the specific suffix AEWL+T corresponds to the 9-pin WLP package variant rather than the TQFN version. Confirm that the ordering information matches the manufacturer's latest datasheet revision to ensure correct pinout and functionality. Check RoHS compliance status as required by your manufacturing standards.

Audio Amplifiers Selection Notes

Select this component when board space is limited due to its compact WLP footprint. It is suitable for applications requiring direct digital audio inputs without external DACs. Ensure the system supports I2S or TDM interfaces. Verify that the power supply voltage range aligns with the 2.5V to 5.5V operational limits of the amplifier.

Audio Amplifiers Part Context

This part belongs to the MAX98357A/B family of tiny, low-cost digital amplifiers. It provides Class AB audio performance with Class D efficiency. The MAX98357A specifically supports I2S data formats, distinguishing it from the MAX98357B which supports left-justified data. Both share similar electrical characteristics and protection features.

Audio Amplifiers Replacement Considerations

MAX98357BEWL+T

Audio Amplifiers FAQ

Does the MAX98357AEWL+T require an external MCLK signal?

No, the device eliminates the need for an external MCLK signal typically used for PCM communication, which reduces EMI and board coupling issues.

What output filtering is required for this amplifier?

No external output filtering is required. The device uses a filterless spread-spectrum modulation scheme that eliminates the need for output filters found in traditional Class D devices.