Where to get PSPICE models of ceramic resonators

filterltspiceRFspice

I wish to design and simulate IF filters using ceramic resonators and crystal oscillators in OrCAD Capture or LT SPICE. The default libraries don't have any ceramics, so anyone know where to download libraries?

Best Answer

The equivalent circuit of a ceramic resonator has the same form as quartz crystal resonator. There is a capacitor representing the static capacitance of the device in parallel with a series RLC that represents the resonating characteristic of the device. In the Murata Ceramic Resonator Applications Manual, available at Murata.com, these circuits are described and values of the parameters are given for Murata resonators. You can easily input this circuit into LT Spice.

Related Solutions

Electronic – Is it possible to add several plots to the same PSpice simulation

I was browsing the unanswered questions like Vlad did (see the comment above), so... - maybe it's too late, but what if it can still help... ;-)

This problem can be solved (in PSpice) using command file(s) the following way:

After a simulation delete all traces in the Probe window (don't use any probes within the simulated circuit schematic; the Probe window is empty then)
Use PSpice Probe Menu/File/Log Commands... Choose a directory and a name for a command file. Its default extension is cmd; but it's a text (macro) file.

From this time on all commands are recorded in the above file unless you stop it by:

PSpice Probe Menu/File/Log Commands... (using the same menu item as before).

During the recording you can insert required traces, make calculations with trace variables, insert new plots, etc.

After that (when recording has been stopped), the recorded commands can also be edited in a ("pure") text editor. So, when you comprehend the principle by exploring the recorded commands in that file (it's quite easy), you can do "whatever you want" with them (what is allowed, of course ;-), add some new by hand, etc... (or do nothing, it's up to you).
Their use is easy:

a) Start with an empty Probe window (don't use any probes within the schematic diagram)

b) Use PSpice Probe Menu/File/Run Commands...

Select the appropriate command file (you can have created more than one for one simulation, of course) and...

...that's it.

Error when simulating spice model in OrCAD PSpice

A guess is that it might refer to the (analog) on this line:

 .SUBCKT TS522 1 3 2 4 5 (analog)

Try removing that and see if it works.

Checking further down, there is also a problem on this line:

 E1 50 40 51 0 1 E2 40 39 52 0 1

It should be:

 E1 50 40 51 0 1 
 E2 40 39 52 0 1

I just tried it in LTSpice with these two changes and it doesn't complain.

Best Answer

Related Solutions

Electronic – Is it possible to add several plots to the same PSpice simulation

Error when simulating spice model in OrCAD PSpice

Related Topic