This paper presents a new highly-simplified and elegant technique for the mid-band analysis of the source-follower which is extended for the analysis of g_m-boosted source-follower and a non-ideal drain-loaded source-follower. The accurate analysis of the drain-loaded source-follower is then applied to the superposition-based accurate differential-gain analysis of a mismatched non-ideal differential-amplifier. This new generalized methodology provides a more comprehensive mismatch gain analysis of the non-ideal differential amplifier compared to that presently available in text-books and other published sources. The drain loaded source-follower was not presented before in any form, and, the new source-follower analysis and the analysis of the drain-loaded source-follower has not been reported before. The presented methodology renders unnecessary the need for the commonly employed “voltage-divider” form of the source-follower analysis and the associated circuit transformations/derivations to employ the voltage-divider form. A more accurate non-ideal differential-amplifier mismatch gain expression is attained by including an elegant drain-loaded source-follower analysis. Simulation results for the derivations are also provided. Comparison of Cadence AC simulation results for the mismatched differential amplifier (with various loads), with the previous and the newly presented analytical mismatch differential gain expressions confirm the superiority of the presented new generalized method.

本文提出了一种新的高度简化和用于源极跟随器，其延长的分析中频带分析优雅的技术克_米-boosted源极跟随器和一个非-理想漏极负载源跟随器。然后，对漏极负载源极跟随器的精确分析将应用于不匹配的非理想差分放大器的基于叠加的精确差分增益分析。与目前在教科书和其他已公开来源中提供的方法相比，这种新的通用方法可以对非理想差分放大器进行更全面的失配增益分析。以前没有以任何形式显示漏极加载的源跟随器，并且以前从未报告过新的源跟随器分析和对漏极加载的源跟随器的分析。所提出的方法不需要源跟随器分析的通常采用的“分压器”形式以及采用分压器形式的相关电路变换/推导。通过包含优雅的漏极加载源极跟随器分析，可以获得更准确的非理想差分放大器失配增益表达式。还提供了推导的仿真结果。比较不匹配的差分放大器（具有各种负载）的Cadence AC仿真结果，以及以前和新近提出的分析不匹配差分增益表达式，证实了所提出的新通用方法的优越性。