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LM49321RL/NOPB Datasheet(PDF) 1 Page - Texas Instruments |
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LM49321RL/NOPB Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 45 page  LM49321, LM49321RLEVAL www.ti.com SNAS457C – SEPTEMBER 2008 – REVISED MAY 2013 LM49321 Audio Sub-System with Stereo DAC, Mono Class AB Loudspeaker Amplifier, OCL/SE Stereo Headphone Output and RF Suppression Check for Samples: LM49321, LM49321RLEVAL 1 FEATURES DESCRIPTION The LM49321 is an integrated audio sub-system 2 • 8-Bit Stereo DAC with up to 192kHz Sampling designed for mono voice, stereo music cell phones Rate connecting to base band processors with mono • Multiple Distinct Output Modes differential analog voice paths. Operating on a 3.3V • Mono Class AB Speaker Amplifier supply, it combines a mono speaker amplifier delivering 520mW into an 8 Ω load, a stereo • Stereo OCL/SE Headphone Amplifier headphone amplifier delivering 36mW per channel • Mono Earpiece Amplifier into a 32 Ω load, and a mono earpiece amplifier • Differential Mono Analog Input delivering 55mW into a 32 Ω load. The headphone amplifier can be configured for output capacitor-less • Single-Ended Analog Inputs (OCL) or single-ended (SE) mode. It integrates the • Independent Loudspeaker, Headphone and audio amplifiers, volume control, mixer, and power Mono Earpiece Volume controls management control all into a single package. In • I2C/SPI (Selectable) Compatible Interface addition, the LM49321 routes and mixes the single- ended stereo and differential mono inputs into • Ultra Low Shutdown Current multiple distinct output modes. The LM49321 features • Click and Pop Suppression Circuit an I2S serial interface for full range audio and an I2C or SPI compatible interface for control. The full range APPLICATIONS music path features an SNR of 85dB with up to 192kHz playback. • Cell Phones • PDAs Boomer audio power amplifiers are designed specifically to provide high quality output power with a • Laptop Computers minimal amount of external components. • Portable Devices KEY SPECIFICATIONS • POUT LS, 8Ω, 3.3V, 1% THD+N: 520 mW (Typ) • POUT HP, 32Ω, 3.3V, 1% THD+N: 36 mW (Typ) • POUT Mono Earpiece, 32Ω, 1% THD+N: 55 mW (Typ) • Shutdown Current: 0.6 µA (Typ) • SNR (DAC + Amplifier): 85 dB (Typ) 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 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2008–2013, 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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