Hi all, I'm trying to using the provided ad630.cir spice subcircuit. I don't understand the pinout - the subcircuit on has 16 pins, while the AD630 has 20. And the numbers/labels of the pins are ambiguous. How can I use this model?
I checked the model and found out that the model doesn't include 4 pins which are 2 DIFF OFF ADJ and 2 CM OFF ADJ pins which are only needed to adjust the differential offset and common mode offset. These pins I think are intentionaly excluded in the model maybe because it is not that of high importance to trim the offsets in the model unlike doing it in real device. The offset voltages of the device have been pretrimmed so that external trimming is only required in the most demanding applications.
For the reference of the label and pin number. Please kindly refer to the header file of the netlist or the screenshot below. The pin names of the model compare to the node assignment is not exactly the same but its not hard to identify.
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