hspice 极零点分析 出现warning

******pole/zero analysis
**warning** underflow 1 time(s) in pole/zero analysis
**warning** underflow 1 time(s) in pole/zero analysis
**warning** underflow 1 time(s) in pole/zero analysis
**warning** underflow 1 time(s) in pole/zero analysis
.............
input =0:vin1output = v(6)

poles (rad/sec)poles ( hertz)
realimagrealimag
-4.77573x0.-760.081k0.
-468.830x0.-74.6166x0.
-492.670x0.-78.4108x0.
-8.63344g0.-1.37405g0.
-14.3726g0.-2.28748g0.

zeros (rad/sec)zeros ( hertz)
realimagrealimag
-503.296x-588.089k-80.1021x-93.5973k
-8.08488g446.764k-1.28675g71.1047k
-81.1766g58.4049g-12.9197g9.29542g
-81.1805g-58.4014g-12.9203g-9.29488g
198.490g0.31.5906g0.

***** constant factor = 163.465n

这些 warning 是什么意思? 打印的极零点的值还准不准确?

我也遇到了啊
而且这个复数极零点怎么出现啦 。 折叠共源共栅OTA的
poles (rad/sec)poles ( hertz)
**********************************************************************
realimagrealimag
-12.4336x0.-1.9789x0.
-3.9217g-3.9342g-624.1544x-626.1489x
-3.9217g3.9342g-624.1544x626.1489x
-7.9060g0.-1.2583g0.
-11.9800g0.-1.9067g0.
-12.4184g0.-1.9765g0.
-16.3111g0.-2.5960g0.
node=vidreal= -3.8509E-16 imaginary=1.3490E-16
**warning** underflow1 time(s) in pole/zero analysis
zeros (rad/sec)zeros ( hertz)
**********************************************************************
realimagrealimag
-3.8427g6.8541g-611.5911x1.0909g
-3.8427g-6.8541g-611.5911x-1.0909g
-7.5648g0.-1.2040g0.
-11.9473g0.-1.9015g0.
-16.3085g0.-2.5956g0.
236.1106g0.37.5782g0.

同问啊！

ddddd

依然無解啊

I don't understand it.

非常感谢 ！