MAX9708
Description
The MAX9708 mono/stereo, Class D audio power amplifier delivers up to 2 x 21W into an 8Ω stereo mode and 1 x 42W into a 4Ω load in mono mode while offering up to 87% efficiency. The MAX9708 provides Class AB amplifier performance with the benefits of Class D efficiency, eliminating the need for a bulky heatsink and conserving power. The MAX9708 operates from a single +10V to +18V supply, driving the load in a BTL configuration. The MAX9708 offers two modulation schemes: a fixedfrequency modulation (FFM) mode, and a spread-spectrum modulation (SSM) mode that reduces EMI-radiated emissions. The MAX9708 can be synchronized to an external clock from 600k Hz to 1.2MHz. A synchronized output allows multiple units to be cascaded in the system. Features include fully differential inputs, prehensive click-and-pop suppression, and four selectable-gain settings (22d B, 25d B, 29.5d B, and 36d B). A pin-programmable thermal flag provides seven different thermal warning thresholds....
