1) two wires missing in the original figure, one is for the self-biased cascode current mirror load
another is the feedback wire from B to negative input
2) this OpAmp use a self-biased scheme for its tail current source as well via feedback
3) nmos is rather a clamp instead of slew rate enhancer
/1 
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发表于 2009-7-2 09:41:13
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