Eaglecad 6.4.0 has been released and now we have available a very useful feature: we can import and export schematics and libraries between Eaglecad and LT SPICE IV with a single mouse click. As usual Eaglecad is available for windows, linux and mac; you can download the latest version for your operating system here: http://www.cadsoftusa.com/download-eagle/?language=en
The first thing you’ll see after update to the latest Eaglecad version is the LTC SPICE icon, visible on the right in the “Command texts” bar:
The switch is controlled by V2; C1 and R1 set the delay. When the voltage applied to the gate is higher than VTH, V1 is available on the load R2:
To import the file into Eaglecad the only thing to do is to click on the LTC SPICE icon, select “Import”, set the path for both the Eaglecad and the Simulation files and then select “OK”:
Very simple and very fast! Now with this new function there is no need to design two times the same schematic, one time for simulation and another one for pcb design. There are no differences between the imported schematic and one directly designed in Eaglecad: we can move, add, rename, delete symbols, text, wires as we want. It is also possible to design for first the Eaglecad schematic and then export it into LT SPICE IV using the command “Export”.