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LM4931ITL/NOPB Datasheet(PDF) 1 Page - Texas Instruments |
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LM4931ITL/NOPB Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 50 page  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 1 FEATURES KEY SPECIFICATIONS 23 • 18-bit 44.1kHz or 48kHz Stereo DAC • PLS OUT at AVDD = 5V, 8Ω • 16-bit 8kHz , 12kHz , 16kHz, or 24kHz Voice- – 1% THD+N, 1.1W (Typ) Band Codec • PLS OUT at AVDD = 3.3V, 8Ω • PLL for Operation from Common System – 1% THD+N, 570mW (Typ) Clocks • PH/P OUT at AVDD = 5V & AVDD = 3.3V, 32Ω • Either I2C or SPI Compatible Serial Interface – 1% THD+N, 26mW (Typ) • I2S Digital Audio Data Serial Interface • Supply Voltage Range • PCM Voice Audio Data Serial Interface – DVDD, 2.7V to 4.0V • Differential Analog Microphone Input – AVDD, 2.7V to 5.0V (1) • 26mW/Channel Stereo Headphone Amplifier • Shutdown Current, 1.1µA • 570mW Mono High Efficiency BTL 8 Ω • PSRR at 217Hz, AVDD = 3V, 62dB (Typ) Amplifier • SNR (Voice Codec), 75dB (Typ) • 32-step Volume Control for Audio Output • SNR (Audio DAC), 86dB (Typ) Amplifiers with 1.5dB Step Size. • Unity-Gain Stable Headphone Amplifiers DESCRIPTION • No Snubber Networks or Bootstrap Capacitors The LM4931 is an integrated audio subsystem that are Required by the Headphone or Hands-Free supports voice and digital audio functions. The Amplifiers LM4931 includes a high quality stereo DAC, voice band codec, a stereo headphone amplifier and a • Adjustable Digital Side-Tone Attenuation high-power high efficiency mono speaker amplifier. It • 16-step Volume Control for Microphone is primarily designed for demanding applications in Preamp with 2dB Step Size mobile phones and other portable devices. • Configurable GPIO/Status Port The LM4931 features an I2S serial interface for full • Available in the 42 bump DSBGA Package range audio, a 16-bit PCM bi-directional serial interface for the voice band codec and an I2C/SPI APPLICATIONS compatible interface for control. The full range music path features an SNR of 86dB with an 18-bit 48kHz • 2.5 and 3G Mobile Phones and Multimedia input. The headphone amplifier delivers at least Terminals 26mWRMS to a 32Ω single-ended stereo load with • PDAs, Internet Appliances and Portable less than 1% distortion (THD+N) when AVDD = Gaming 3.3VDC. The mono speaker amplifier delivers up to 570mWRMS into an 8Ω load with less than 1% • Portable DVD/CD/AAC/MP3 Players distortion when AVDD = 3.3VDC. • Digital Cameras and Toys (1) Best operation is achieved by maintaining 3.0V ≤ AVDD ≤ 5.0 and 3.0V ≤ DVDD ≤ 3.6V and AVDD ≥ DVDD. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 Boomer is a trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2004–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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