General Description

The MAX9746 mono Class D audio power amplifier provides Class AB amplifier performance with Class D efficiency, conserving board space and extending battery life. The MAX9746 is designed specifically for systems using 1.8V logic interface. Using a Class D architecture, the MAX9746 delivers 1.2W into an 8Ω load while offering efficiencies near 90. A low-EMI modulation scheme renders the traditional Class D output filter unnecessary.

特性 Features

? Filterless Amplifier Passes FCC Radiated Emissions Standards with 100mm of Cable

? Unique Spread-Spectrum Mode Offers 5dB Emissions Improvement Over Conventional Methods

? Optional External SYNC Input

? Simple Master-Slave Setup for Stereo Operation

? 88 Efficiency

? 1.2W into 8Ω

? Low 0.1 THD+N

? High PSRR (72dB at 217Hz)

? Integrated Click-and-Pop Suppression

? 1.8V Logic-Compatible

? Low Quiescent Current (4mA)

? Low-Power Shutdown Mode (0.1μA)

? Short-Circuit and Thermal-Overload Protection

? Available in Thermally Efficient, Space-Saving 12-Bump UCSP Package (1.5mm x 2mm x 0.6mm)

Applications

??? Cellular Phones

??? PDAs

??? MP3 Players

??? Portable Audio