The Designer's Guide Community Forum

The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl
Simulators >> Circuit Simulators >> pz analysis in spectre
https://designers-guide.org/forum/YaBB.pl?num=1209155592

Message started by xuedashun on Apr 25^th, 2008, 1:33pm

Title: pz analysis in spectre
Post by xuedashun on Apr 25^th, 2008, 1:33pm

I run pz analysis in spectre for 2stage amp connected as buffer and got the pz results listed below which is very small.
I expect M level values for pole zero values.
Poles (Hz)
Real Imaginary Qfactor
1 -2.70560e-06 +/- 1.53583e-04 2.83869e+01
2 -1.69713e+01 0.00000e+00 5.00000e-01

For the pz sim, I use default options. Could you tell me the possible reasons for the strange results?

Thank you!