| 摘要 |
A method for simplifying common mode feedback circuitry utilized in multi-stage operational amplifiers may comprise generating a first differential output signal by a first amplifying circuit in an amplifying stage and communicating the first differential output signal to a first output of the amplifying stage. A second amplifying circuit in the amplifying stage may generate a second differential output signal that may be communicated to a second output of the amplifying stage. The second differential output signal may be fed back to a first feedback circuit in the amplifying stage, and the first differential output signal may be fed back to a second feedback circuit in the amplifying stage. Additionally, the first and the second differential output signals may be fed back to the second feedback circuit and the first feedback circuit, respectively, in a first amplifying stage and/or any one or more of succeeding amplifying stages.
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