[IBIS] Usage of [Series Current]

Hello Experts,

I am trying to use [Series Current] keyword instead of [R series] in a
Series model as given below.


|**********************************************************************
[Model]  SER_RES
Model_type  Series
Polarity  Non-Inverting
Enable  Active-High
C_comp  0pF  0pF  0pF
|
|  typ  min  max
[Voltage Range] 1.2V 1.08V 1.32V
|
| variable R(typ) R(min) R(max)
|
|[R Series] 100ohm  NA  NA
|
[End]
|**********************************************************************
|
[Model]  SER_CURR
Model_type  Series
Polarity  Non-Inverting
|Enable  Active-High
C_comp  0pF  0pF  0pF
|
|  typ  min  max
[Voltage Range] 1.2V 1.08V 1.32V
|
[Series Current]
| Voltage I(typ)    I(min)    I(max)
   0.00V   0.0A      NA  NA
   0.10V  -1.0mA   NA  NA
   0.20V  -2.0mA   NA  NA
   0.30V  -3.0mA   NA  NA
   0.40V  -4.0mA   NA  NA
   0.50V  -5.0mA   NA  NA
   0.60V  -6.0mA   NA  NA
   0.70V  -7.0mA   NA  NA
   0.80V  -8.0mA   NA  NA
   0.90V  -9.0mA   NA  NA
   1.00V  -10.0mA  NA  NA
   1.10V  -11.0mA  NA  NA
   1.20V  -12.0mA  NA  NA
|
[End]
|*****************************************************

According to understanding from IBIS specification document,  both above
given models should be identical.
But, during simulation I am getting different results.
Series model with only [R series] is giving desirable result while model
with only [Series current] giving totally different results

Am I doing something wrong or there is some problem with my simulator???

Thanks in advance
Edward

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