I have been trying to do a transient simulation of a Power supply independent biasing circuit in Cadance but how much ever I try I do not see the transition of the states. I always get only the steady state even if I put the stop time in nano seconds ! This is the circuit that I am trying to simulate and I have marked the nets(Voltage) that I trying to view in my transient simulation,Circuit diagram in Cadance

The simulation result looks like this(below) and the time axis is in nanoseconds range but still I do not get to see a slope or anything other than the steady state response ![enter image description here]2

Could there be any reason why I am not able to see the transition ??


A transient simulation simulates the circuit's conditions over time. You seem to have no component in your circuit which introduces a time varying voltage.

Use a vpulse source instead of the vdc (V17), fill in it's properties so that it will step the supply voltage. Simulate that, then check that the supply voltage has the transient step that you want to simulate. If that is OK, look at the voltages inside the circuit.

  • \$\begingroup\$ Ahh of course ! Now it works ! Thank you so much ! \$\endgroup\$ – Bhuvanesh Narayanan Dec 27 '15 at 16:41

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