MAX98397EWB+T

Audio Amplifiers Overview

The MAX98397EWB+T is a mono Class-DG speaker amplifier featuring integrated IVSENSE, brownout prevention (BPE), and dynamic headroom tracking (DHT). It operates on dual rails: VBAT (3V to 5.5V) and PVDD (3V to 28V). Key electrical parameters include 42W output into 8Ω at 1% THD+N with PVDD=28V, and 26W into 4Ω at 1% THD+N with PVDD=16V. Quiescent power is 21mW at VPVDD=20V/VVBAT=3.8V. The device supports sample rates up to 192kHz, utilizes PCM/I2C interfaces without MCLK, and is housed in a 35-bump WLP package operating from -40°C to +85°C.

Audio Amplifiers Feature Summary

• Class-DG architecture enables industry-leading quiescent power by switching between VBAT and PVDD supply rails based on signal level.
• Integrated speaker current and voltage sensing allows host-run protection algorithms without external components.
• Brownout-prevention engine reduces system power consumption during supply drops to prevent brownouts.
• Dynamic headroom tracking optimizes available headroom automatically to maintain consistent distortion and listening levels.

Audio Amplifiers Applications

• Mobile speakers
• Smart speakers
• Soundbars
• Tablets, laptops, and desktop computers
• Smart IoT devices

Audio Amplifiers Procurement Notes

Verify the specific suffix 'EWB' against the manufacturer's official ordering guide to confirm packaging type and tape/reel specifications. Confirm RoHS compliance status and lead times directly with Analog Devices or authorized distributors. Ensure the design accommodates the required dual-rail power supply configuration for optimal performance.

Audio Amplifiers Selection Notes

Select this component for high-power single-channel applications requiring ultra-low quiescent current and advanced speaker protection. The integrated IVSENSE simplifies board layout by removing external sense resistors. Verify that the host processor supports the required PCM data formats and I2C control interface for proper configuration.

Audio Amplifiers Part Context

This device belongs to the Maxim Integrated audio amplifier portfolio, designed for high-efficiency digital input applications. It combines Class-D efficiency with Class-AB-like sound quality features. The integration of DSP functions and monitoring capabilities positions it as a comprehensive solution for modern portable and stationary audio systems.

Audio Amplifiers Replacement Considerations

Consult the official datasheet for direct pin-to-pin compatible alternatives within the MAX983xx series. Verify functional equivalence regarding Class-DG operation, IVSENSE availability, and maximum supply voltage ratings before substitution.

Audio Amplifiers FAQ

Does the MAX98397 require an external master clock?

No, the unique clocking structure eliminates the need for an external system clock (MCLK) for PCM communication.

What is the purpose of the audio processing bypass path?

It enables ultrasound applications by allowing signals above 50kHz to pass through the amplifier without attenuation by the standard audio processing blocks.