General Description

The MAX9779 combines 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 through the Class AB speaker amplifiers.

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-Overload Protection

? Selectable Gain Settings (15dB, 16.5dB, 18dB, and 19.5dB)

? ±8kV ESD-Protected Headphone Driver Outputs

? Available in Space-Saving, Thermally Efficient Package

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

Applications

??? Notebook PCs

??? Flat-Panel TVs

??? Tablet PCs

??? Multimedia Monitors

??? Portable DVD Players

??? LCD Projectors