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I started to use LHP zero with the basic miller compensation including a capacitor and a resistor in series to build a left half plane zero for good stability.
From the theory, zero makes the transfer function to zero value, and zero produces +20db gain and positive or negative 90 degree phase...
Chips draw an abnormal large current and got a burned spot in the test?
During my tset of an ASIC with several circuits on it, I found out that the chip often directly starts to draw a very large current after turning on the power. And the socket and the chip got extremly hot and I clearly saw...
I know the impedance of a capacitor can be written as 1/sc
But how about the transfer function(Bode diagram, gain&phase) of a capacitor? I mean if a signal is imposed on one end of the capacitor, how does the output signal at the other end of this capacitor look like?
thanks, I am also quite interested to know why R04 is about half of R02?
Their currents are the same, so the output impedance would be mainly dependent on the length of transistors. So doesn't it depend on different sizing of 2 and 4?
I have a question regarding the gain optimization of an amplifier
The output gain of a standard differential amplifier can be written as
G=gm1*(r02||r04)
here r02 and r04 are the output impedances of the transistors
Therefore, it is often said that the length of these transistors should be...
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