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LM4930

Texas Instruments
Part Number LM4930
Manufacturer Texas Instruments
Description Audio Subsystem
Published May 19, 2023
Detailed Description LM4930 www.ti.com SNAS212C – JULY 2003 – REVISED MAY 2013 LM4930 Boomer™ Audio Power Amplifier Series Audio Subsystem...
Datasheet PDF File LM4930 PDF File

LM4930
LM4930

Overview
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 stereo DAC can also be used while the voice codec is in use.
The headphone amplifier delivers 25mWRMS to a 32Ω single-ended stereo load with less than 0.
5% distortion (THD+N) when AVDD = 3V.
The mono speaker amplifier delivers up to 330mW into an 8Ω load with less than 1% distortion when AVDD = 3V.
The LM4930 employs advanced techniques to reduce power consumption, to reduce controller overhead and to eliminate click and pop.
Boomer audio power amplifiers were designed specifically to provide high qu...


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