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1.2 Getting Started 13
Analysis Task
Following, we want to analyze the ΜA741 operational amplifier. The task is to find an interpretable
symbolic formula for the corner frequency of the small-signal voltage transfer function. This is useful
to identify those circuit elements and parasitics, which have a dominant influence on it. In addition,
the symbolic transfer function can be utilized for further investigation, such as the extraction of its
poles and zeros, to find methods for the compensation of certain effects.
Importing Schematics
To import the schematics picture of the operational amplifier, we use the Analog Insydes command
DXFGraphics (Section 3.13.2). This command translates two-dimensional DXF data into Mathematica
graphics objects which can be displayed in a Mathematica notebook. Most schematics entries of
commercial circuit simulators support the export of schematics in DXF format. DXFGraphics allows
for importing your schematics into Mathematica for documentation purposes.
Before using DXFGraphics, of course we have to load the Analog Insydes master package as described
in Section 1.2.2.
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