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werner2101 / spicelib

Tools to collect and test spice models
http://www.h-renrew.de/h/spicelib/doc/index.html
BSD 2-Clause "Simplified" License
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OPA2652 and other ti opamps fail their tests #5

Closed asomers closed 15 years ago

asomers commented 15 years ago

Several opamps, including OPA2652, are marked as model_status=good but fail to simulate on my machine. In my master branch, they give errors such as : Error on line 67 : g.x1.g10 in 0 POLY( 2 ) x1.22 0 x1.23 0 300n 1m 1m unknown parameter (x1.22) and fail to produce the output file.

In spicelib-0.0.3, OPA2652 does produce the output file, but it is clearly wrong; the output voltage is always 0.

Does OPA2652 simulate correctly on your machine or is it incorrectly marked in ti_opamps.index ?

werner2101 commented 15 years ago

Works for me. Which ngspice simulator are you using? I'm using the ngspice 18 compiled with the following options:

--with-readline=yes --enable-xspice

Maybe the POLY code is in xspice.

werner2101 commented 15 years ago

I have one opamp that is marked as good, but fails: OPA846_TI00134

The errror messages are:

testlibrary.pyc running simulation: cd model_tests/ti/opamps/OPA846_TI00134 ; ngspice -b ../../../../testcircuits/opamp/simulate.ngspice Warning: singular matrix: check nodes x1.pnp8 and x1.pnp8 Warning: singular matrix: check nodes x1.pnp8 and x1.pnp8 Note: starting dynamic Gmin stepping

Trying gmin = 1.0000E-03 Note: One successful Gmin step

asomers commented 15 years ago

I will try recompling ngspice with those options. That must be it.

asomers commented 15 years ago

That did it. No more errors about POLY

werner2101 commented 15 years ago

great.