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.

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