LM4930

LM4930 www.ti.com SNAS212C – JULY 2003 – REVISED MAY 2013 LM4930 Boomer™ Audio Power Amplifier Series Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers Check for Samples: LM4930 FEATURES 1 23 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 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. The LM4930 features an I2S serial interface for full range audio, a 16-bit PCM bi-directional serial interface for the voice band codec and an two-wire interface for control. The full range music path features an SNR of 86dB with a 16-bit 48kHz input. The stere...