General Description

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.

特性 Features

? No DC-Blocking Capacitors Required—Provides Industry’s Most Compact Notebook Audio Solution

? PC2001 Compliant

? 5V Single-Supply Operation

? Class AB 2.6W Stereo BTL Speaker Amplifiers

? 110mW DirectDrive Headphone Amplifiers

? High 90dB PSRR

? Low-Power Shutdown Mode

? Industry-Leading Click-and-Pop Suppression

? Low 0.01 THD+N at 1kHz

? Short-Circuit and Thermal Protection

? Selectable Gain Settings

? Analog Volume Control (MAX9750)

? Beep Input with Glitch Filter (MAX9750)

? 2:1 Stereo Input MUX (MAX9751)

? ±8kV ESD-Protected Headphone Driver Outputs

? Available in Space-Saving, Thermally Efficient Packages

?? 28-Pin Thin QFN (5mm x 5mm x 0.8mm)

?? 28-Pin TSSOP

Applications

? Notebook PCs

? Flat-Panel TVs

? Tablet PCs

? PC Displays

? Portable DVD Players

? LCD Projectors

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