MAX98304EWL+T

Audio Amplifiers Overview

The MAX98304EWL+T is a mono 3.2W Class D audio amplifier from Analog Devices/Maxim Integrated, operating on a 2.5V to 5.5V supply. It features five selectable gains (0dB, 3dB, 6dB, 9dB, 12dB) via the GAIN pin and delivers up to 3.2W output at 5V with an 8-ohm load. Quiescent current is 0.95mA at 3.7V. The device includes spread-spectrum modulation for EMI reduction, click-and-pop suppression, thermal protection, and low-current shutdown.

Audio Amplifiers Feature Summary

• Filterless operation enabled by active emissions-limiting edge-rate control and spread-spectrum modulation
• Five pin-selectable gain settings ranging from 0dB to 12dB
• Ultra-low noise performance with 19µVRMS input-referred noise
• Comprehensive protection including thermal overload and short-circuit limits

Audio Amplifiers Applications

• Notebook and Netbook Computers
• Cellular Phones
• Tablets
• MP3 Players
• VoIP Phones

Audio Amplifiers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status indicated by the '+' suffix in the part number. Ensure proper handling of the WLP package during assembly to maintain reliability. Review the datasheet for specific layout requirements regarding ground planes and trace widths.

Audio Amplifiers Selection Notes

Select this amplifier for applications requiring high efficiency without external output filters. Consider the 9-bump WLP package for space-constrained designs. Evaluate the five gain options against source impedance and required output levels. Verify that the speaker load includes sufficient series inductance for stable filterless operation.

Audio Amplifiers Part Context

This component belongs to the MAX9830x family of mono Class D amplifiers designed for portable electronics. It combines Class AB audio quality with Class D efficiency. The MAX98304EWL+T specifically utilizes a 1.0mm x 1.0mm wafer-level package suitable for compact mobile devices and consumer electronics where board real estate is limited.

Audio Amplifiers Replacement Considerations

MAX98304EWL+T

Audio Amplifiers FAQ

How is the gain configured?

Gain is set by connecting the GAIN pin to PGND, PVDD, or leaving it unconnected, providing selections of 12dB, 6dB, and 0dB respectively.

Does the device require an output LC filter?

No, the MAX98304 uses a filterless modulation scheme that eliminates the need for traditional output LC filters.

What is the quiescent current consumption?

The quiescent current is typically 0.95mA at a 3.7V supply voltage.