Update: 28 September, 2023
The MAX9879 combines a high-efficiency stereo Class D audio power amplifier with a stereo capacitor-less DirectDrive® headphone amplifier. It provides Class AB performance with Class D efficiency, delivering up to 715mW of power into an 8Ω load with 88% efficiency from a 3.7V supply, extending battery life. The filterless modulation scheme, active emission limiting circuitry, and spread-spectrum modulation reduce EMI and eliminate the need for output filtering. The headphone amplifier delivers up to 58mW into a 16Ω load from a 3.7V supply. The device features a ground-referenced output, eliminating the need for large DC-blocking capacitors. It also includes a user-defined input architecture, preamplifier gain settings, input mixer, volume control, click-and-pop suppression, and I2C control. The bypass mode allows an external amplifier to drive the speaker connected to the MAX9879 outputs. The MAX9879 is available in a thermally efficient, space-saving 30-bump UCSP™ package.
File format: PDF
Size: -
MD5 Checksum: 39DF08C396B2DCD01137951C53D3D941
Publication date: 07 May, 2012
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PDF Link: MAXIM MAX9879 Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier handbook PDF