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There is a capacitor in the base current compensation circuit.
What the function of this capacitor is used for?
If it is used for stability, i found the PZ simulation with the capacitor is worse than without the capacitor???
If it is uesd to kill the gain, what is this function realized???
Thanks!!
Yes, in all cases the current is 30x reduction with compensation in the circuit i attached before.
But the compensation becomes worse in high temperature(higher than 110'C), because the Vgs of Pmos is reduced with temperature increasing, so the bipolar which helps copying the current works in...
Thanks for your detailed answer.
Because of the zero input current, the compensation circuit indeed can reduce the offsets of the reference voltage.
But if there are some concerns about the base current compensation function? such as offset?
Dear all:
Could you tell me " What the function of base current compensation in amplifiers?
Such as the yellow part in the schematic.
Regards & Thanks!
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