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MAX9879 - Stereo Class D Audio Subsystem

General Description

The MAX9879 combines a high-efficiency stereo Class D audio power amplifier with a stereo capacitor-less DirectDrive® headphone amplifier.

Maxim’s filterless class D amplifiers with active emissions limiting technology provide Class AB performance with Class D efficiency.

Key Features

  • Better than 9dB Margin Under EN 55022 Class B Limits with No Filter Components.
  • Low RF Susceptibility Design Rejects TDMA Noise from GSM Radios.
  • Input Mixer with User Defined Input Mode.
  • Stereo 715mW Speaker Output (RL = 8Ω, VDD = 3.7V).
  • Stereo 58mW Headphone Output (16Ω, VDD = 3.7V).
  • Low 0.04% THD+N at 1kHz (Class D Power Amplifier).
  • Low 0.018% THD+N at 1kHz (Headphone Amplifier).
  • 88% Efficiency (RL = 8Ω, POUT = 750mW).

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-4436; Rev 0; 2/09 KIT ATION EVALU E L B A AVAIL Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier Features ♦ Better than 9dB Margin Under EN 55022 Class B Limits with No Filter Components ♦ Low RF Susceptibility Design Rejects TDMA Noise from GSM Radios ♦ Input Mixer with User Defined Input Mode ♦ Stereo 715mW Speaker Output (RL = 8Ω, VDD = 3.7V) ♦ Stereo 58mW Headphone Output (16Ω, VDD = 3.7V) ♦ Low 0.04% THD+N at 1kHz (Class D Power Amplifier) ♦ Low 0.018% THD+N at 1kHz (Headphone Amplifier) ♦ 88% Efficiency (RL = 8Ω, POUT = 750mW) ♦ 1.