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如何理解MOSFET的跨导gm? - 知乎 gm有关于Vds和Vgs的关系尤为重要，这是分析电路工作是否合理的重要指标之一 （其他诸如gm over id，Id对gm的影响暂不考虑）， 因为在完成电路设计后，研究电路的静态工作点，其实就是研究每个MOS的Vgs和Vds。 在简单的计算后我们可以得出下列曲面：
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