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Apr 20th, 2019, 7:11am
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opamp simulation (Read 37 times)
blue111
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opamp simulation
Apr 15th, 2019, 7:54am
 
For improving phase margin of opamp3.asc , I use an extra series 5k resistor R1 to put a zero near the unity gain frequency.
but then, good accurate resistor is hard to fabricate.

So, let me ask: anyone have any idea on how to replace both the ideal current source and the extra resistor with a mosfet in ohmic region without using any extra bias voltage source ?

In other words, is it possible to use constant gm bias circuit in both opamp3.asc and opamp.asc circuit ?

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