General Description

The MAX9770 combines a mono, filterless, Class D speaker amplifier and stereo DirectDrive® headphone amplifier in a single device. The MAX9770 operates from a single 2.5V to 5.5V supply and includes features that reduce external component count, system cost, board space, and offer improved audio reproduction.

Features

♦ 1.2W Filterless Class D Amplifiers Pass FCC Class B Radiated EMI Standards with 100mm of Cable

♦ Spread-Spectrum Mode Offers 5dB EMI Improvement over Conventional Methods

♦ 80mW DirectDrive Headphone Amplifier Eliminates Bulky DC-Blocking Capacitors

♦ High 85dB PSRR at 217Hz

♦ 85 Efficiency

♦ Low 0.015 THD+N

♦ Industry-Leading Click-and-Pop Suppression

♦ Integrated 3-Way Input Mixer/Multiplexer (MAX9770)

♦ Logic-Adjustable Gain

♦ Short-Circuit and Thermal Protection

♦ Available in Space-Saving, Thermally Efficient Packages

Applications

    Cellular Phones

    Compact Notebooks

    PDAs