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LTspice: photodiode current

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I am working on building a circuit using the SG01D-5Lens (opamp: LMC6001) in LTspice, based on the values from the datasheet, in order to verify whether the theoretical values match the simulation results.

enter image description here

However, since there is no diode library available, you have manually specified the values from the datasheet for the diode.

  1. Is it acceptable to do this?

    When comparing theoretical and simulation values, is it correct to compare Vout? According to the formula, I understand that$$V_\text{out} = -I_D \cdot R_1.$$From the equation, \$I_D = V_\text{cc} / R_\text{f}\$, so with a \$5\text{V}\$ supply and a \$10\text{G}\Omega\$ resistor, \$I_D\$ should be \$5\text{nA}\$. But the simulation result shows \$I_D = 2.5\text{pA}\$.

  2. Is there something I might have overlooked to make the simulation match the theoretical values?enter image description here


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