DESCRIPTION
The LM4930 is an integrated audio subsystem that supports voice and digital audio functions. The LM4930 includes a high quality I2S input stereo DAC, a voice band codec, a stereo headphone amplifier and a high-power mono speaker amplifier. It is primarily designed for demanding applications in mobile phones and other portable devices.
   
FEATURES
• 16-bit Resolution 48kHz Stereo DAC
• 16-bit Resolution 8kHz Voice Codec
• I2S Digital Audio Data Serial Interface
• Two-wire Serial Control Interface
• PCM Voice Audio Data Serial Interface
• 25mW/channel Stereo Headphone Amplifier
• 330mW Mono 8Ω Amplifier (at AVDD = 3.0V)
• 32-step Volume Control for Audio Output
    Amplifiers
• No Snubber Networks or Bootstrap Capacitors
    are Required by the Headphone or Hands-free
    Amplifiers
• Digital Sidetone Generation with Adjustable
    Attenuation
• Gain Controllable Headphone Amp, Mono BTL
    Amp, Mic Preamp
• Available in the 36–bump DSBGA and 44–lead
    WQFN Packages
   
APPLICATIONS
• Mobile Phones
• Mobile/low Power Audio Appliances
• PDAs