MAX9879 Description
MAX9879 The MAX9879 bines 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. The Class D power amplifier delivers up to 715mW from a 3.7V supply into an 8Ω load with 88% efficiency to extend battery life.
MAX9879 Key Features
- Better than 9dB Margin Under EN 55022 Class B Limits with No Filter ponents
- 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)
- 1.6Ω Analog Switch for Speaker Amplifier Bypass
- High Speaker Amplifier PSRR (72dB at 217Hz)