MAX98361AEWL+

Audio Amplifiers Overview

The MAX98361AEWL+T is a digital pulse-code modulation (PCM) input Class-D amplifier providing Class-AB audio performance with Class-D efficiency. It operates on a single supply voltage ranging from 2.5V to 5.5V, delivering 3.2W output power into a 4Ω load at 5V. The device features a quiescent current of 2.2mA and standby current of 1.5μA. It achieves 92% efficiency and supports sample rates from 8kHz to 96kHz. The unit includes extensive click-and-pop reduction, robust short-circuit protection, and thermal shutdown.

Audio Amplifiers Feature Summary

• Eliminates the need for external MCLK signals and I2C programming through automatic recognition of PCM and TDM clocking schemes.
• Utilizes a filterless spread-spectrum modulation scheme combined with edge-rate limiting to minimize electromagnetic interference without output filters.
• Features sophisticated turn-on ramping and click-and-pop suppression circuitry to ensure silent operation during power transitions.
• Supports flexible digital audio interfaces including I2S, left-justified, and 8-channel TDM formats with high jitter tolerance.

Audio Amplifiers Applications

• Single Li-ion Cell/5V Devices
• Smart Speakers
• Notebook Computers
• IoT Devices
• Gaming Devices (Audio and Haptics)

Audio Amplifiers Procurement Notes

Verify the specific suffix 'EWL' against the manufacturer's official datasheet to confirm package type and RoHS compliance status. Ensure the ordering code matches the exact variant required for your design, as different suffixes may indicate variations in gain settings or turn-on characteristics. Cross-reference the component marking with the factory documentation to prevent counterfeit parts.

Audio Amplifiers Selection Notes

Select this amplifier for designs requiring minimal external components and simplified software integration due to its plug-and-play architecture. Consider the MAX98361A/B variants for fast 1ms turn-on times, or the MAX98361C/D variants if volume ramping over 13ms is preferred to reduce acoustic transients. Verify that the system logic levels are compatible with the device's input thresholds.

Audio Amplifiers Part Context

This component belongs to the MAX98361 family of tiny, cost-effective, plug-and-play digital Class-D amplifiers manufactured by Analog Devices Inc./Maxim Integrated. The family offers industry-leading audio performance with high efficiency, designed specifically for space-constrained portable electronics. The WLP package allows for compact layouts without expensive vias.

Audio Amplifiers Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.

Audio Amplifiers FAQ

Does the MAX98361AEWL+T require an external master clock (MCLK)?

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

What is the difference between MAX98361A/B and MAX98361C/D regarding turn-on?

MAX98361A and MAX98361B have fast 1ms turn-on times, while MAX98361C and MAX98361D ramp the volume over 13ms during turn-on and turn-off.

How does the device handle electromagnetic interference (EMI)?

It uses a filterless spread-spectrum modulation scheme along with active emissions-limiting, edge-rate limiting, and overshoot control circuitry to greatly reduce EMI.