Spice Notation Question

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Jim Thompson 12 years ago

I have a customer using _Microcap_ who claims that this notation....

.PRINT AC DB(V([OUT])/V([IN_AMP]))

means print the dB DIFFERENCE between V(OUT) and V(IN_AMP).

I can't find such notation in the reference manual.

Can this be correct?

(I created a Spice model for the customer. Models runs on all brands of Spice EXCEPT Microcap which gives an "underflow" error.) ...Jim Thompson

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| 1962 | I love to cook with wine. Sometimes I even put it in the food.

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Miros³aw Kwa¶niak 12 years ago

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Difference between dB(V(OUT)) and dB(V(IN_AMP)) ;)

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Jim Thompson 12 years ago

Something is throwing up a "underflow" error.

Same netlist with only a .DC analysis call instead of a .AC call works just ducky.

Andy Thompson of Spectrum Software is now involved, so we'll find out the problem... I hope. ...Jim Thompson

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Jim Thompson 12 years ago

Per Andy Thompson of Spectrum, throw-up solved by adding...

.OPTIONS NUMERIC_DERIVATIVE

(I always use CAPS in option lines and models... the UNIX/Eunuchs crowd cause me all kinds of grief with everything lower case... you can't easily tell a "1" from an "l" in many fonts :-) ...Jim Thompson

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