eldo_user

Eldo Control Language
Library of Functions for Tasks
"-LOG2_Y" to specify a logarithmic scale (base 2) for the y-axis.
• x_scale
Is the scale of the x-axis. Default value is 1. For example, if the x_data_type is
"double_voltage" and the x_scale is 1e-6, then it means the values of x_values are given in
mV.
• y_scale
Is the scale of the y-axis. Default value is 1. For example, if the y_data_type is
"double_voltage" and the y_scale is 1e-6, then it means the values of y_values are given in
mV.
Description
You can use EZwave to display graphically the evolution of one measurement versus another
(which is not always directly possible using a .PLOT command in the netlist) when setting up a
complex corner case simulation plan.
Examples
The following example shows how to create two waveforms displaying the evolution of the
saturation drain current versus the drain-to-source voltage, and the limit between linear and
saturation regions depending on gate-to-source and drain-to-source voltages.
The creation of the waveforms is obtained through the two calls to wcreate_wave at the end of
the task. Everything that is done before is to compute the values to plot: first, the threshold gateto-source
voltage is computed; then, the gate-to-source voltage is increased logarithmically
from this threshold voltage and for each value, the saturation current and the saturation drain-tosource
voltages are computed.
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Eldo® User's Manual, 15.3