Just wondering if there are QSPICE models for common opamps like the 741, LM324, LM358 and so on?
I read that QSPICE has a novel mechanism that makes it easier for engineers to model opamps, much easier than it is on other simulators but I do not have the skills to do that and wanted to use some pre-designed opamp model for common op amps like I have in my junk box.
Also please let me know if I’m asking the wrong question and there are other ways to approach this with QSPICE.
There are many ways for modeling opamp. One common way is to use manufacturer spice subckt, for example, TI LM324 subckt model can be download from TI website : https://www.ti.com/product/LM324?keyMatch=LM324&tisearch=universal_search&usecase=GPN-ALT#design-tools-simulation
However, you have to learn how to import subckt netlist for this task. As you are new to spice, here you can directly download Qspice symbols which embedded with TI subckt in its. As a result, you can run a simulation likes this with the symbols : https://forum.qorvo.com/t/the-results-of-the-communication-transmission-characteristics-appear-to-be-erroneous/22141/4
Here is a reference of how to use Qspice Ã-device RRopAmp to model an opamp
OK this is helpful, thanks for your time folks.
