Tool/software: TINA-TI or Spice Models
There is an ideal OpAmp available but i need to create an Ideal Rail to Rail OpAmp.
How can I do that?
Tool/software: TINA-TI or Spice Models
There is an ideal OpAmp available but i need to create an Ideal Rail to Rail OpAmp.
How can I do that?
Norbert,
TINA-TI has a built-in supply-dependent op-amp model with adjustable parameters.
To place one in a schematic, click on the Semiconductors tab and then click on the second op-amp icon as shown below and place the symbol in a schematic.
Double-click on the symbol and a pop-up will appear with a field called "Type" as shown below.
Click on the ellipsis to the right of the Type field and the Catalog Editor will appear.
The first entry is !OPAMP with a table of supported Model Parameters which are editable.
Hopefully editing the parameters will get you the behavior you are looking for.
Please give it a try and let me know if you have any questions or concerns.
Regards,
John
John,
in the mean time i created a kind of ideal rail to rail OpAmp which seems to work.
The background is that current consumption in automotive control units is always a very sensitive topic. And during plain conceptual creation of the automotive control unit circuit it is preferred to used idealized devices with few adjustable essential parameters.
Rather than searching and selecting for real components from the very first moment.
Accordingly i took care to create an OP Macro which also shows an idealized current consumption from the supply lines.
The OpAmp Parameters can be adjusted by Right-Click on the OpAmp Symbol: Enter Macro
The .TSM File is attached
After some testing here now an improved version with more accurate Rail to Rail output voltage swing and more accurate current consumption even under clamping conditions.
Norbert
