TI TPA6140A2 G类立体声耳机放大方案

2009-07-16 16:05:00 TI

TI 公司的TPA6140A2和TPA6141A2是25mW G类立体声耳机放大器,它的系统级音乐播放时间比AB类放大器提高了20%.这两个器件采用DirectPath技术,不需要大的隔直流电容和开关机抑制电路,增强了听觉效果.小型封装,超低功耗和高质量音频保真,使它们非常适合手提设备应用如手机/智能手机和MP3播放器.本文介绍了TPA6140A2和TPA6141A2的主要特性和指标, 功能方框图以及差分输入,单端输入的应用配置图.此外还介绍了评估模块的主要特性,详细电路和所用元件清单.

TPA6140A2: CLASS-G DIRECTPATH STEREO HEADPHONE AMPLIFIER WITH I2C VOLUME CONTROL

TI’s new TPA6140A2 and TPA6141A2 25-mW Class-G stereo headphone amplifiers improve system-level music playback time by 20 percent over Class-AB technology in the best-in-class music phones shipping today. DirectPath technology eliminates the need for large DC-blocking capacitors and pop-suppression circuitry improves the listening experience. Small package size, ultra-low power consumption and high audio fidelity makes these devices ideal for portable applications such as mobile/smart phones and MP3 players.

TPA6140A2主要指标:
TPA6140A2主要特性:

Consume 0.6-mA/channel quiescent current and deliver 5 mW/channel into a
32-Ω load, while keeping the total supply current below 5 mA
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