I am currently designing a switched-capacitor filter. I try to run PSS & PAC to get the transfer function in order to verify my gain and 3dB cut-off frequency. However, the PSS simulation seems like running forever. I check the Netlist and it shows:
Periodic Steady-state Analysis 'pss' : fund = 1MHzAttempt to generate initial guess for DC solver failed.Zero diagonal found in Jacobian at ' I103.net320'Reordering Jacobianand so on....
Can anyone please tell me how to solve this?
The setup I put in PSS analysis is:CLK1= 1/1usCLK2= 1/1us Beat Frequency= 1MHzNumber of Harmonics = 0 Accuracy Defaults (errpreset) = liberal
Thank you so much.