While there has been a vast record of earlier work (ref. 1) on this topic, here we will combine a few concepts to show some emerging issues and paths to improve the Phase Margin (PM) for VFA stages ...
After a brief review of the history of the K2-W vacuum-tube op amp, an LTspice model is used to create its schematic in preparation for SPICE simulation. The availability of hierarchical blocks for ...
Here is a close look at the common- versus differential-mode voltage and instrumentation amplifier (IA) topologies.
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