Low RF Susceptibility, Mono Audio Subsystem With DirectDrive Headphone Amplifier

The MAX9877A combines a high-efficiency Class D Audio Power Amplifier with a stereo Class AB capacitor- less DirectDrive® Headphone Amplifier Maxim’s 3rd generation, filterless Class D Amplifier with active emis- sions limiting* technology provides Class AB perfor- mance with Class D efficiency. The MAX9877A delivers up to 725mW from a 3.7V supply into an 8Ω load with 87% efficiency to extend battery life. The filterless modulation scheme combined with active emissions limiting circuitry and spread-spectrum modula- tion** greatly reduces EMI while eliminating the need for output filtering used in traditional Class D devices. By Maxim Integrated Products