MAX98357BEWL+T

Audio Amplifiers Overview

The MAX98357BEWL+T is a digital pulse-code modulation input Class D amplifier from Analog Devices Inc./Maxim Integrated. It provides Class AB audio performance with Class D efficiency in a 9-pin WLP package. The device accepts left-justified data formats and supports sample rates between 8kHz and 96kHz. It operates on a single supply voltage ranging from 2.5V to 5.5V, delivering up to 3.2W of output power into a 4Ω load at 5V. The amplifier features sophisticated edge-rate control for filterless operation, extensive click-and-pop reduction circuitry, and robust short-circuit and thermal protection mechanisms.

Audio Amplifiers Feature Summary

• Digital PCM input interface automatically recognizes various clocking schemes without requiring external MCLK signals or I2C programming.
• Filterless Class D output stage utilizing active emissions-limiting and spread-spectrum modulation to reduce electromagnetic interference.
• Integrated comprehensive protection including sophisticated click-and-pop suppression, thermal overload shutdown, and short-circuit limiting.

Audio Amplifiers Applications

• Smart speakers
• Notebook computers
• IoT devices
• Gaming devices (Audio and Haptics)
• Single Li-ion cell/5V devices

Audio Amplifiers Procurement Notes

Verify the specific suffix 'BEWL' corresponds to the left-justified data format variant, as the base MAX98357 family includes both I2S and left-justified versions. Confirm the '+T' designation indicates tape and reel packaging when sourcing components. Ensure compatibility with the required 9-WLP footprint and pitch dimensions during procurement planning.

Audio Amplifiers Selection Notes

Select this component when a digital audio interface is preferred over analog inputs to simplify system design and reduce board space. The MAX98357B variant is specifically chosen for applications requiring left-justified data synchronization rather than standard I2S protocols. Consider the 9-pin WLP package for extreme size constraints where via-less mounting is necessary.

Audio Amplifiers Part Context

This part belongs to the MAX98357A/MAX98357B series of tiny, low-cost digital amplifiers. The MAX98357B distinguishes itself by supporting left-justified data formats, whereas the MAX98357A supports I2S. Both share identical electrical characteristics, protection features, and physical package options, differing primarily in their digital audio interface timing requirements.

Audio Amplifiers Replacement Considerations

MAX98357AEWL+T

Audio Amplifiers FAQ

Does the MAX98357BEWL+T require an external master clock (MCLK) signal?

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

What digital audio data formats does the MAX98357BEWL+T support?

The MAX98357BEWL+T supports left-justified data formats. It also supports Time Division Multiplexed (TDM) data with up to eight slots.

How does the amplifier handle electromagnetic interference (EMI)?

It employs active emissions-limiting, edge-rate limiting, and overshoot control circuitry along with a filterless spread-spectrum modulation scheme to significantly reduce radiated emissions.