Rail-to-rail Miller compensation method without feed forward...

Details Rail-to-rail Miller compensation method without feed forward... Rail-to-rail Miller compensation method without feed forward...

2011-07-26

2011-07-26

Nguyen, Hieu P (Department: 2817)

Amplifiers

Signal feedback

In cascade amplifiers

C330S311000, C330S292000

Reexamination Certificate

active

07986185

ABSTRACT:
A rail-to-rail Miller compensation method without feed forward path includes forming a first compensation branch including a first amplifier, wherein an input of the first amplifier is electrically connected with an output of a second stage gain amplifier, the second stage gain amplifier is electrically connected the first stage gain amplifier in series forming an operational amplifier; and forming a second compensation branch including a second amplifier, wherein a dual relation is provided between an input stage of the first amplifier and that of the second amplifier, namely, if the input stage of the first amplifier is N-type, the input stage of the second amplifier is P-type, and vice versa. The present invention is capable of achieving the rail-to-rail output range without affecting the system stability. The N-type and P-type inputs are simultaneously applied to the input of the amplifier of the compensation branches.

REFERENCES:
patent: 5854573 (1998-12-01), Chan
patent: 7633338 (2009-12-01), Aram
patent: 7724080 (2010-05-01), Luff

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