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Do we need to use this in every level of schematic.
For eg:
I created an inverter which is sub part of a ring oscillator..
Now, Do i have to give supply to BOTH > the individual inverter and Ring oscilator( chain of inverters)?
If i give it to ring oscillator it works fine but when i debug the circuit and check the output of individual inverter it gives wrong output for every inverter.
no put it at the very top level, in your case the schematic of the ring oscillator. if you want to test just one inverter, create a new schematic with just the inverter symbol with the vdd-vdc-gnd circuit and simulate. or replace vdd with vdc=3.3 (or whatever your technology uses) in the schematic of inverter.
why are there output pins? is this the top level or there is this the schematic of a symbol? make sure all pmos source is tied to vdd (from basic library, symbol) and in top level you have the vdd-vdc-gnd circuit. if you are really struggling, tie all pmos to vdc=1.8. does the opamp give output? Vid seems to be zero.
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