eldo_user

Examples
Tutorial—High Impedance Fault Detection of a PLL Circuit
11. Create a HiZ configuration to filter out detection on the charge pump output and focus
our next analysis on the remaining PLL blocks. Edit the main netlist HiZ_PLL.cir in
your preferred text editor, and uncomment the following lines in the netlist:
.define_group name=without_xcpf inst=xpll except=xpll.xcpf
.end_group
.hiz_cfg name=cfg_withoutXCPF scope=without_xcpf
.hiz use_config=cfg_withoutXCPF file=hiz_withoutXCPF.hiz
The .define_group/.end_group commands create a group of instances/devices excluding
the block XPLL.XCPF, providing the group name without_XCPF.
The .hiz_cfg command creates a HiZ configuration named cfg_withoutXCPF that only
applies to the group defined above.
The .hiz command indicates that the high impedance checks will activate the
configuration you have created.
Remember to comment the previous .hiz command (step 1 in the netlist), otherwise there
will be two .hiz commands used simultaneously which is not allowed by Eldo.
12. Rerun the simulation in Eldo:
eldo HiZ_PLL.cir
After the simulation is complete, open the HiZ output file hiz_withoutXCPF.hiz with the
AMS Results Browser and explore the results.
amsrb hiz_withoutXCPF.hiz
Click twice on the Impedance Average column to re-order the results by decreasing
Impedance average value:
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Eldo® User's Manual, 15.3