Micro speakers amplifier integrates dynamic speaker management: Page 2 of 2

June 12, 2019 //By Julien Happich
speakers amplifier
The MAX98390 5.1W Dynamic Speaker Management (DSM) smart amplifier integrates speaker protection to deliver up to 2.5x loudness and 2 octaves of bass with a low quiescent power consumption of about 24mW.

To properly protect the speaker, amplifier algorithms must know the characteristics of the speaker, such as resonant frequency within its enclosure, excursion limit and voice coil thermal limit. Traditionally, designers had to go through the time-consuming and complex characterization process or rely on direct supplier support to characterize their speakers and enclosures. The MAX98390 significantly reduces the design time through the easy-to-use DSM Sound Studio GUI that allows customers to quickly and easily characterize many speakers. Combined with DSM’s thermal protection, the result is maximum loudness across the significantly extended frequency ranges in minutes, with no complex programming required.

The chip offers industry-leading peak efficiency at 86 percent, which is even further improved with DSM’s Perceptual Power Reduction (PPR) feature that can yield up to an additional 25 percent efficiency, making it well suited for low power devices that need longer battery life.

Maxim Integrated - www.maximintegrated.com

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