General Description

The MAX9715 high-efficiency, stereo, Class D audio power amplifier provides up to 2.8W per channel into a 4Ω speaker with a 5V supply. Maxim’s second-generation Class D technology features robust output protection, high efficiency, and high power-supply rejection (PSRR) while eliminating the need for output filters. Selectable gain settings, +10.5dB or +9.0dB, adjust the amplifier gain to suit the audio input level and speaker load.

Features

♦ 5V Single-Supply Operation

♦ Spread-Spectrum Modulator Reduces EMI

♦ 2.8W, Class D, Stereo Speaker Amplifier (4Ω)

♦ Filterless Class D Requires No LC Output Filter

♦ High PSRR (71dB at 1kHz)

♦ 86 Efficiency (RL = 8Ω, POUT = 1W)

♦ Low-Power Shutdown Mode

♦ Integrated Click-and-Pop Suppression

♦ Low Total Harmonic Distortion: 0.06 at 1kHz

♦ Short-Circuit and Thermal Protection

♦ Internal Gain, +9.0dB or +10.5dB

♦ Available in Space-Saving Package

   16-Pin Thin QFN-EP (5mm x 5mm x 0.8mm)

Applications

   High-End Notebook Audio

   LCD Projectors

   Portable Audio

   Multimedia Docking Stations