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Re: Cascode Bandgap
1. I also can't understand how the startup circuit cut-off from the main circuit after it start
4. use opa is voltage negative feedback to make two nodes' voltage equal.
This circuit is use current negative feedback to realize two nodes' voltage equal.
But I can't...
Re: Stability analysis
5) Instead of your current way of probing, I would insert a voltage source probe between the output of the CMFB circuit and the point where it is feeding to the gate of the PMOS current source load.
Bharath
Why insert a voltage source probe there is better?
I see "gm1<gm2=>Av1<1=>Smaller miller effect
But (W/L)1<(W/L)2 is not recommend.coz Vds1 will become smaller."in a book.
why Vds1 smaller?
if (W/L)2 increases,whlle M1 is in saturation,Vgs2 drops to keep constant current,so Vs2(=Vd1) increases,and vds1 increase?
About MOSFET
Is there a mosfet that it enters saturation,then as Vds increasing(while keep Vgs constant),its current almostly keeps constant, but suddenly goes down at a certain Vds.After that the current increase slowly,but until another certain Vds,the current increases sharply.Why the...
Re: Is layout job boring?
en,it depends on youself.Maybe somebody thinks it is at the bottom and lacks of technique.But I think to be a really good layout engineer is difficult,and a good layout play an important role to the circuits' performance.
Re: opamp's gain
Maybe its supply voltage is only 1.3V.I think adding M7-M8 transistors (sre.gif circuit) won't let all transistors operate in saturation,so he got rid of it.
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