LM4931

LM4931 www.ti.com SNAS251E – APRIL 2004 – REVISED MAY 2013 LM4931 Boomer™ Audio Power Amplifier Series Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone Amplifiers Check for Samples: LM4931 FEATURES 1 23 18-bit 44.1kHz or 48kHz Stereo DAC 16-bit 8kHz , 12kHz , 16kHz, or 24kHz Voice- Band Codec PLL for Operation from Common System Clocks Either I2C or SPI Compatible Serial Interface I2S Digital Audio Data Serial Interface PCM Voice Audio Data Serial Interface Differential Analog Microphone Input 26mW/Channel Stereo Headphone Amplifier 570mW Mono High Efficiency BTL 8Ω Amplifier 32-step Volume Control for Audio Output Amplifiers with 1.5dB Step Size. Unity-Gain Stable Headphone Amplifiers No Snubber Networks or Bootstrap Capacitors are Required by the Headphone or Hands-Free Amplifiers Adjustable Digital Side-Tone Attenuation 16-step Volume Control for Microphone Preamp with 2dB Step Size Configurable GPIO/Status Port Available in the 42 bump DSBGA Package APPLICATIONS 2.5 and 3G Mobile Phones and Multimedia Terminals PDAs, Internet Appliances and Portable Gaming Portable DVD/CD/AAC/MP3 Players Digital Cameras and Toys KEY SPECIFICATIONS PLS OUT at AVDD = 5V, 8Ω – 1% THD+N, 1.1W (Typ) PLS OUT at AVDD = 3.3V, 8Ω – 1% THD+N, 570mW (Typ) PH/P OUT at AVDD = 5V & AVDD = 3.3V, 32Ω – 1% THD+N, 26mW (Typ) Supply Voltage Range – DVDD, 2.7V to 4.0V – AVDD, 2.7V to 5.0V(1) Shutdown Current, 1.1µA PSRR at 217H...