Hi all,
The same error in this post: Spectre stability analysis with active device as probe - Custom IC Design - Cadence Technology Forums - Cadence Community
I have a testbench where I run STB analysis and which has been working until the problem I'm about to describe appeared. The testbench has an amplifier block and a stbprobe block. The diffstbprobe STB probe is in the default schematic view of the stbprobe block and I can see it in the netlist. As I told you, it has been working and the testbench still works for transient analysis. When I run the STB analysis, I am seeing this error whose cause I don't understand.
I tried the following:
1. Initially, the test was to launch stb using actimes & acnames, it had been working. The tran alone still works. However, at the simulation time when STB used to be launched, I see the above error.
2. Tried with diffstbprobe
2. Change of probe name didn't help.
3. I recently did PDK change. An update and restart of cadence did not solve the problem. There are other tests in the same testbench which use the same cell block which are working ok.
4. It works when the diffstbprobel_gnd is outside the STB probe in the main schematic.
Software: Virtuoso ICADVM20.1-64b.500.29
Any idea how to fix this.
Thank you.
Fyoh