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I only added one fully differential OTA on the cascode transistors(the common gate ones). I copied the original OTA as the gain boosted OTA, the same bias, and the same CMFB. But the gain decrease to about half.....
Yes...I checked the working conditions and found the common gate transistors...
I browsed almost all the papers of the IEEE of the gain boosted OTA, all mostly said about the same thing, just add a Op Amp to increase Rout, like the picture attached.... The problem is how to decide the bias and the Width/Length of the the added Op Amp. I used the Op Amp as same as the...
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