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I want to know if it is possible to model a InGasAs panchromatic PIN photodiode, in accord with datasheet, in simulator SPICE MicroCAP 12. Because the supplier doesn't provide a SPICE model. And if it is possible, which are those steps.

Here is data-sheet https://www.tme.eu/en/details/ig17x1000s4i/photodiodes/laser-components/ And below I will attach an electrical schematic of a transimpedance amplifier with phototdiode, used as a smoke receiver.

I want to monitor graphically the impulse of photodiode in function of output of transimpedance for sensibilty. I found a type of photodiode in the Micro-CAP 12 library but it is simple photodiode, which does not match the datasheet.

enter image description here

enter image description here

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  • \$\begingroup\$ What will be your inputs to the photodiode and which photodiode specifically are you talking about? \$\endgroup\$ – Andy aka Jun 25 '20 at 9:45
  • \$\begingroup\$ Here is the datahseet tme.eu/Document/726cc5089c90f506f2d9a008ec28a891/ig17.pdf. And I want to monitor graphically the signal output of amplifier in function of signal impulse at the input of photodiode, for to follow the sensibilty/responsivity. \$\endgroup\$ – Dragos Baciu Jun 25 '20 at 9:47
  • \$\begingroup\$ And what form does the signal input take (bearing in mind that this is an electrical simulation package)? \$\endgroup\$ – Andy aka Jun 25 '20 at 9:53
  • \$\begingroup\$ The form it must be, an optical rectangular impulse. \$\endgroup\$ – Dragos Baciu Jun 25 '20 at 10:07
  • \$\begingroup\$ Micro-cap works with signal inputs that are voltage and current. \$\endgroup\$ – Andy aka Jun 25 '20 at 10:10
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Yes, you can model a photodiode with a circuit in SPICE. And the circuit you linked will work.(figure 3 of : http://www.osioptoelectronics.com/application-notes/an-photodiode-parameters-characteristics.pdf)

But first, I suggest that you read that entire document to really understand what a photodiode does and how it works.

You don't seem to get that :

Photodiodes operate by absorption of photons or charged particles and generate a flow of current in an external circuit, proportional to the incident power.

And this is in the first paragraph of the document you linked.

See also :

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