MAX98357BETE+

Audio Amplifiers Overview

The MAX98357BETE+ is a single-channel, digital-input Class D audio amplifier manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single supply voltage ranging from 2.5V to 5.5V and delivers up to 3.2W of output power into a 4Ω load at 5V. The device features a TQFN-16 package with dimensions of 3x3mm. Key electrical specifications include a quiescent current of 2.4mA, 92% efficiency at 1W output into an 8Ω load, and an output noise of 25µVRMS with a gain of 15dB. Total Harmonic Distortion plus Noise (THD+N) is rated at 0.015% at 1kHz. The amplifier supports sample rates from 8kHz to 96kHz and includes sophisticated edge rate control for filterless operation.

Audio Amplifiers Feature Summary

• Digital input interface eliminates the need for master clock (MCLK), supporting I2S/TDM protocols.
• Sophisticated edge rate control enables filterless Class D outputs, reducing external component count.
• Integrated protection circuits include short-circuit and thermal shutdown capabilities.
• Low RF susceptibility and high Power Supply Rejection Ratio (PSRR) ensure clean audio performance.

Audio Amplifiers Applications

• Smartphones and mobile devices requiring compact audio solutions
• Tablets and portable media players
• Wireless speakers and Bluetooth audio modules
• Laptops and ultrabooks

Audio Amplifiers Procurement Notes

Verify the specific suffix 'B' against official Analog Devices documentation to confirm pinout or functional variations compared to the standard 'A' variant. Ensure the TQFN-16 package compatibility matches your PCB footprint design. Confirm RoHS compliance status through the manufacturer's latest certification documents before finalizing procurement.

Audio Amplifiers Selection Notes

Select this component when a digital audio interface is available from the source processor. The MAX98357BETE+ is suitable for applications prioritizing size reduction due to its WLP or TQFN packaging options. Consider the 2.5V to 5.5V supply range for battery-powered systems. Evaluate the 3.2W output capability against speaker impedance requirements, typically 4Ω or 8Ω loads.

Audio Amplifiers Part Context

The MAX98357 series represents a family of tiny, low-cost PCM Class D amplifiers designed for mobile applications. The MAX98357BETE+ is part of this lineup, offering Class AB-like performance in a Class D topology. It is often paired with evaluation boards like the MAX98357DEV#WLP for design verification. The series is known for integrating all necessary functions into a minimal footprint.

Audio Amplifiers Replacement Considerations

Public confirmed substitute part numbers are not explicitly listed in the provided source material. Designers should consult the official Analog Devices cross-reference guide or datasheet revision history for verified alternatives such as other variants within the MAX98357 family or newer generations of digital audio amplifiers.