MAXIM MAX9705 Data Sheet
Update: 29 September, 2023
The MAX9705 is a 3rd-generation, ultra-low EMI, mono, Class D audio power amplifier that provides Class AB performance with Class D efficiency. It delivers 2.3W into a 4Ω load and offers efficiencies above 85%. The active emissions limiting (AEL) circuitry reduces EMI by controlling the output FET gate transitions under all possible transient output-voltage conditions. The zero dead time (ZDT) technology allows the output FETs to switch simultaneously without cross-conduction, maintaining efficiency and THD+N performance. The patented spread-spectrum modulation scheme eliminates the need for output filtering found in traditional Class D devices. These design concepts reduce component count and extend battery life. The MAX9705 offers two modulation schemes: fixed-frequency (FFM) mode and spread-spectrum (SSM) mode, which further reduces EMI-radiated emissions due to the modulation frequency. The MAX9705 oscillator can be synchronized to an external clock through the SYNC input, allowing the switching frequency to be externally defined. The SYNC input also enables cascading and frequency locking of multiple MAX9705s, minimizing interference due to clock intermodulation. The device utilizes a fully differential architecture, a full-bridged output, and comprehensive...
Brand: MAXIM
File format: PDF
Size: 2356 KB
MD5 Checksum: 863E60DD5001E51EEFAE4E579337ABD4
Publication date: 07 June, 2012
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PDF Link: MAXIM MAX9705 Data Sheet PDF