GETTING STARTED. Analog Devices SSM2375 Filterless Class-D Audio Amplifier

Below you will find brief information for Audio Amplifier SSM2375 Filterless Class-D Audio Amplifier. The SSM2375 is a high efficiency, Class-D audio amplifier designed to maximize performance for mobile phone applications. It requires a minimum of external components and operates from a single 2.5 V to 5.5 V supply. It is capable of delivering 3 W of continuous output power with less than 1% THD + N driving a 3 Ω load from a 5.0 V supply. The SSM2375 includes an optional modulation select pin that enables a low EMI mode, which significantly reduces the radiated emissions at the Class-D outputs, particularly above 100 MHz.

PDF Download

Document

Hello! I am an AI chatbot specifically trained to assist you with the Analog Devices SSM2375 Filterless Class-D Audio Amplifier Audio Amplifier Evaluation Board User Guide. I have thoroughly reviewed the document and can help you locate the exact information you need or explain the content in clear and simple terms. Whether you’re looking for guidance on specific features, troubleshooting steps, or general usage, feel free to ask your questions. The more details you provide about your concerns or needs, the more accurately and effectively I can assist you!

Show related prompts

Assistant typing

Assistant terminated

Key features

High efficiency
Class-D audio amplifier
Mobile phone applications
Low EMI
Filterless
Spread spectrum PDM
Flexible gain select
Low power
Single supply operation
High performance

Frequently asked questions

The SSM2375 evaluation board provides a complete application circuit for driving a loudspeaker, enabling testing and evaluation of the SSM2375 audio amplifier.

The SSM2375 can deliver up to 3W of continuous output power with less than 1% THD + N driving a 3 Ω load from a 5.0 V supply.

The SSM2375 uses Spread spectrum pulse density modulation (PDM) to provide lower EMI-radiated emissions compared with other Class-D architectures. The inherent randomized nature of spread spectrum PDM eliminates clock intermodulation (beating effect) of several amplifiers in close proximity. The SSM2375 includes an optional modulation select pin that enables a low EMI mode, which significantly reduces the radiated emissions at the Class-D outputs, particularly above 100 MHz.

The SSM2375 evaluation board offers gain settings of 0 dB, 3 dB, 6 dB, 9 dB, and 12 dB, which can be selected by using jumpers on the board.

The recommended loudspeaker impedance for the SSM2375 evaluation board is 3 Ω or higher. Using a lower impedance may lead to excessive current draw and potential damage to the amplifier.