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every Vov has its position.
there is a rule:
If MOSFETs are current match, then make the Vov as high as possible, it will make the current mirrors outputs better. But it will reduce the head room.
If MOSFETs are voltage match, then make the Vov lower, it's good for reducing input offset...
oz960 inverter problem
u can use OZ960 or BIT3105 to make a inverter module for ur LCD module.it's not very easy, but u can buy a commercial inverter to ignite ur CCFL
frequency & phase
if u want to simulate the open loop gain of ur opamp ur circuit may be not right. u may add the signal source to ur circuit as the following statements:
vinn inn 0 Vdc
vinp inp 0 Vdc AC Vac
where Vdc is a DC voltage, Vac is an AC voltage amplitude, for instance 1v.
then use...
frequency & phase
well, the dominant pole is at the output node of the first stage. so you should decrease the output impedance of the first stage. so you may try the following methods:1) increase the bias current, 2)decrease the L of the transistors. in ur AC simulation schematic, 10p...
frequency & phase
your AC analysis is from 1Hz , you can try from 0.01 or lower. the dominant pole of your OP is very low , smaller than 1. u see the gain decrease directly from 130 db.
Harmonics
harmonic are mainly caused by the resistor capacitor, and the active elements in the circuit. if the small signal transfer function of the opamp is derived, it will be easy to find how the harmonic occurs. For transfer function h(s)=A*(s+0.001s^2), a signal x(s)=sin(100s) goes through...
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