发明申请
US20120013400A1 Current Control Circuit, Class AB Operational Amplifier System and Current Control Method
有权
电流控制电路，AB类运算放大器系统和电流控制方法
- 专利标题： Current Control Circuit, Class AB Operational Amplifier System and Current Control Method
- 专利标题（中）： 电流控制电路，AB类运算放大器系统和电流控制方法
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申请号： US12895830申请日： 2010-09-30
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公开(公告)号： US20120013400A1公开(公告)日： 2012-01-19
- 发明人: Ming-Hung Chang , Che-Hung Lin
- 申请人： Ming-Hung Chang , Che-Hung Lin
- 优先权： TW099123149 20100714
- 主分类号： H03F3/68
- IPC分类号： H03F3/68 ; H03G3/00
摘要：
A current control circuit for controlling a bias current of a class AB operational amplifier includes: a low current source, for generating a low bias current; a high current source, for generating a high bias current, which is greater than the low bias current; and a comparing and selecting unit, coupled to an output terminal of the class AB operational amplifier, for selecting one of the low bias current and the high bias current to output as the bias current according to an output voltage of the class AB OP.
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