Passing Parameters to Hierarchical Block in LTSPICE

There were a couple of questions on how to pass parameters to Hierarchical Blocks from main level schematic in LTSPICE. In fact, until recently, I was having troubles doing this. But solution is very simple and strait forward. Read more

Subsircuit analisys, converting subcircuit netlist to schematic

Imagine, you are lucky to get subcircuit for component you’d like to simulate. How good this subcircuit is?

Quality of simulation strongly depends on quality of subcircuit model that is used. Unfortunately, netlist for complicated subcircuit does not look like schematic drawing and is hard to interpret. Yes, everything is there, but as many design engineers, I’m thinking in terms of schematic when it is comes to necessity of interpreting functional behavior. Read more

Hierarchical Blocks in LTSPICE

LTSPICE is offering very nice possibility to incorporate repeatable portions of schematic into simulation, that is not available in many other SPICE simulation programs- hierarchical blocks. Hierarchical blocks represent reusable portions of schematic, visible on higher level of schematic as a symbol. While LTSPICE is missing multipage schematic editor, hierarchical blocks are offering another simple way of creating complex schematics. Read more