Convergence errror problem

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engrvip

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*** initial damped pseudo transient completed. ***
*** final try started ***
**error** no convergence in final try for gmindc= 1.0000E-10
no convergence in damped pseudo-transient,

**error**: no convergence in operating point


I am getting this convergence error message ...............can somebody plz tell how to solve it????

thanks
 

which simulator?
which circuit topology?
 

In my experience,
Some convergence error occurs because simulator cannot find initial state.

If you give sources with VDC,
try to source (vdd & reference., etc) with rampup.
(i.e. start all sources from 0V, then ramp up to your desired value.)
for example, If vdd=3.3V, you can use vpulse or vpwl starting from 0V to 3.3V.

Regards.
 

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