Does anyone have an OrCAD PSpice model for the PGA204 amplifier or knows where I could download one from?
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Does anyone have an OrCAD PSpice model for the PGA204 amplifier or knows where I could download one from?
Thank you for the response Luis.
I was hoping that maybe someone smarter than me modelled it themselves. I understand that no official SPICE model exists, but I was hoping that maybe a community member had a need for a model of this over the many years it has been around and there is an unofficial solution somewhere.
Kind regards,
Stefan
Hello Kai,
Thank you for your suggestion. I am considering replicating the schematic of the "insides" on the pga204 datasheet. Is there a suggestion of a component that has a PSpice model to use as A1 A2 A3?
Kind regards,
Stefan
HI Stefan,
As Kai has suggested, a rough or approximate model using some of the datasheet parameters can be created using three op-amps as shown in the block diagram and matching the frequency response from the datasheet parameters.
Attached is an TINA SPICE OPA block that allows you to edit parameters: offset, first dominant pole and max supply range, etc. in case you would like to work this on your own. Using the datasheet parameters, you can create a model that roughly matches the frequency response, offset and other basic parameters.
I could look at giving you a rough model for offset and frequency response based on the datasheet; but it will be an approximation. If you are interested in this, I would expect I could provide this to you in a couple of business days.
Thank you and Regards,
Luis
Hi Luis,
Thank you for the model and the recommendation. I will have a look at how to use TINA and have an attempt at making my own "model emulation" based on the datasheet.
Thank you once again both to you and to Kai.
Kind regards,
Stefan