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Class AB folded cascode stage and method for low noise, low power, low-offset operational amplifier
Class AB folded cascode stage and method for low noise, low power, low-offset operational amplifier
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机译:用于低噪声,低功耗,低失调运算放大器的AB类折叠共源共栅级和方法
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摘要
A class AB folded cascode circuit includes a differential current follower having first and second cascode transistors with emitters connected to first and second input conductors. An input of a first current mirror is coupled to the first input conductor, and an input of a second current mirror is coupled to the second input conductor. Outputs of the second and first current mirrors are coupled to collectors of the first and second cascode transistors, respectively, and also to first and second outputs, respectively, of the differential current follower. A third current mirror converts a differential output current in the first and second output conductors to a corresponding single-ended output voltage on the second output conductor.
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