The MAX9750/MAX9751/MAX9755 combine a stereo, 2.6W audio power amplifier and stereo DirectDrive 110mW headphone amplifier in a single device. The headphone amplifier uses Maxim's patented† DirectDrive architecture that produces a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving cost, space, and component height. A high 90dB PSRR and low 0.01% THD+N ensures clean, low-distortion amplification of the
audio signal.
The MAX9750 features an analog volume control, and a BEEP input. The MAX9751 features a 2:1 input multiplexer, allowing multiple audio sources to be selected. All devices feature a single-supply voltage, a shutdown mode, logic-selectable gain, and a headphone sense input. Industry-leading click-and-pop suppression eliminates audible transients during power and shutdown cycles.
The MAX9750/MAX9751/MAX9755 are offered in a space-saving, thermally efficient 28-pin thin QFN (5mm x 5mm x 0.8mm) package. Those devices have thermal-overload
and output short-circuit protection, and are specified over the extended -40°C to +85°C temperature range.
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