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LM49321 - 产品图解：
LM49321-具有立体声 DAC 单声道 AB 类扬声器放大器 OCL/SE 立体声耳机输出和射频抑制的音频子系统
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TI产品 - LM49321介绍

LM49321 - 具有立体声 DAC 单声道 AB 类扬声器放大器 OCL/SE 立体声耳机输出和射频抑制的音频子系统

LM49321是TI德州仪器公司的一款音频DAC产品，LM49321是具有立体声 DAC 单声道 AB 类扬声器放大器 OCL/SE 立体声耳机输出和射频抑制的音频子系统，本站介绍了LM49321的封装应用图解、特点和优点、功能等，并给出了与LM49321相关的TI元器件型号供参考。

LM49321 - 具有立体声 DAC 单声道 AB 类扬声器放大器 OCL/SE 立体声耳机输出和射频抑制的音频子系统 - 音频DAC - 音频转换器 - 德州仪器

产品描述

The LM49321 is an integrated audio sub-system designed for mono voice, stereo music cell phones connecting to base band processors with mono differential analog voice paths. Operating on a 3.3V supply, it combines a mono speaker amplifier delivering 520mW into an 8? load, a stereo headphone amplifier delivering 36mW per channel into a 32? load, and a mono earpiece amplifier delivering 55mW into a 32? load. The headphone amplifier can be configured for output capacitor-less (OCL) or single-ended (SE) mode. It integrates the audio amplifiers, volume control, mixer, and power management control all into a single package. In addition, the LM49321 routes and mixes the single-ended stereo and differential mono inputs into multiple distinct output modes. The LM49321 features an I2S serial interface for full range audio and an I2C or SPI compatible interface for control. The full range music path features an SNR of 85dB with up to 192kHz playback.

Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external components.

产品特性

  • 8-Bit Stereo DAC with up to 192kHz Sampling Rate
  • Multiple Distinct Output Modes
  • Mono Class AB Speaker Amplifier
  • Stereo OCL/SE Headphone Amplifier
  • Mono Earpiece Amplifier
  • Differential Mono Analog Input
  • Single-Ended Analog Inputs
  • Independent Loudspeaker, Headphone and Mono Earpiece Volume controls
  • I2C/SPI (Selectable) Compatible Interface
  • Ultra Low Shutdown Current
  • Click and Pop Suppression Circuit

Key Specifications

  • POUT LS, 8?, 3.3V, 1% THD+N: 520 mW (Typ)
  • POUT HP, 32?, 3.3V, 1% THD+N: 36 mW (Typ)
  • POUT Mono Earpiece, 32?, 1% THD+N: 55 mW (Typ)
  • Shutdown Current: 0.6 µA (Typ)
  • SNR (DAC + Amplifier): 85 dB (Typ)

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