Non-ideal transimpedance dynamic model
The largest change to make in your equivalent circuit is the dependent voltage source polarity so that you have negative feedback....







simulate this circuit &ndash; Schematic created using CircuitLab

Rin &amp; Cint are the opamp's internal major pole at a very low frequency. It is assumed that this opamp has been compensated for stable unity gain. R2 &amp; C2 may not be necessary. This opamp has 0 ohms output impedance. You might add about 100 ohms as Thevenin resistance to VCVS1 output. Not included here (it won't make much difference in this case).