发明名称 |
Headphone amplifier circuit |
摘要 |
A class G headphone amplifier circuit with improved power efficiency and low EMI. It may use an automatic signal level detector to detect the signal level of incoming signals and determine positive and negative power supplies for headphone amplifiers accordingly. A voltage generator may generate pairs of differential output voltages at a plurality of amplitude steps, and supply to headphone amplifiers the pair with the amplitude determined by the automatic signal level detector. As a result, headphone amplifiers are biased according to the input signal level, and the multiple voltage rails may improve power efficiency and avoid clipping. |
申请公布号 |
US8228124(B2) |
申请公布日期 |
2012.07.24 |
申请号 |
US20110983412 |
申请日期 |
2011.01.03 |
申请人 |
YE JINGHUA;SHEN HUI;LI DANNY;ANALOG DEVICES, INC. |
发明人 |
YE JINGHUA;SHEN HUI;LI DANNY |
分类号 |
H03F3/04 |
主分类号 |
H03F3/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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