LF256_LM00002: operational amplifier test

part name: LF256_LM00002
description: Monolithic JFET-Input OP-AMP
documentation: http://www.national.com/ds/LF/LF256.pdf
model name: LF256
library file: LF256.MOD

input and output voltage graph
Input and output voltage of an non-inverting amplifier with amplification factor of 2.
UR voltage graph
Transfer function of an AC non-inverting amplifier.

Test logging messages

testlibrary.pyc creating netlist:  gnetlist -g spice-sdb -l scripts/geda-parts.scm -o model_tests/national/opamps/LF256_LM00002/gc0.35/ac_amplifier.net model_tests/national/opamps/LF256_LM00002/gc0.35/ac_amplifier.sch
Using SPICE backend by SDB -- Version of 4.28.2007
schematic-type = normal schematic
Command line passed = gnetlist -g spice-sdb -l scripts/geda-parts.scm -o model_tests/national/opamps/LF256_LM00002/gc0.35/ac_amplifier.net model_tests/national/opamps/LF256_LM00002/gc0.35/ac_amplifier.sch 
Loading schematic [/home/werner/oss/geda/spicelib/model_tests/national/opamps/LF256_LM00002/gc0.35/ac_amplifier.sch]

testlibrary.pyc netlist creation was successful
testlibrary.pyc running simulation:  cd model_tests/national/opamps/LF256_LM00002/gc0.35 ; /usr/bin/gnucap -b simulate.gnucap
Gnucap 0.35
The Gnu Circuit Analysis Package
Never trust any version less than 1.0
Copyright 1982-2006, Albert Davis
Gnucap comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome
to redistribute it under certain conditions
according to the GNU General Public License.
See the file "COPYING" for details.
* 
J1 5 2 4 JX 
^ ? illegal type
J2 6 7 4 JX 
^ ? illegal type
.MODEL JX PJF(BETA=1.25E-5 VTO=-2.00 IS=30E-12) 
             ^ ? not implemented
#          
 27.       

testlibrary.pyc simulation run was successful
testlibrary.pyc testing and plotting
output voltage is not a function of input voltage
Circuit does not acheive correct amplification
testlibrary.pyc testing or plotting failed

Werner Hoch
Last modified: Wed Nov 21 15:29:09 CET 2007