January 10, 2025

Maxim D class power amplifier, MAX98355 and MAX98356...

Maxim has introduced two digital input Class D power amplifiers that do not require complicated programming settings, which can effectively simplify design, reduce noise, and speed up the product launch process. MAX98355 (Pulse Code Modulation, PCM) and MAX98356 (Pulse Density Modulation, PDM) Class D audio amplifiers have the industry's best anti-clock jitter characteristics and excellent sound quality.

Maxim D class power amplifier, MAX98355 and MAX98356 advantage performance introduction

Class D power amplifier

The internal circuit of MAX98355/MAX98356 can detect the input clock and automatically calculate the sampling rate, which simplifies the audio equipment and does not require complicated programming settings and system software support. The digital input of the device can effectively suppress noise and jitter interference, and improve the sound quality; the device does not need to be programmed and set up, which greatly accelerates the product's listing process.

Key advantage

• Excellent anti-jitter interference characteristics ensure excellent sound quality: THD+N is only 0.013% under 1kHz, 99dB dynamic range

• Lower power consumption: efficiency up to 92% (RL = 8Ω, POUT = 900mW, V¬DD = 3.7V)

• Smaller solution size and simpler design: 2.5V to 5.5V single power supply

Industry evaluation:

• "This series of digital input Class D amplifiers makes system design almost plug-and-play," said Robert Nicoletti, application manager of Maxim Integrated: "This convenient feature effectively reduces the user's design complexity."

• Databeans research director Susie Inouye commented: "The market analysis company Databeans research shows that the Class D audio amplifier market is increasing year by year at a compound annual growth rate of 12%, which is much higher than the growth rate of the entire consumer semiconductor market. The DAC is integrated into the Class D audio amplifier, Maxim allows users to experience all the advantages of digital input while greatly reducing the size of the solution."

Availability and price information

• Available in 9-pin WLP package (1.345mm x 1.435mm x 0.64mm)

• Operating temperature range is -40°C to +85°C

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