I am trying to build a photodetecting circuit with a photodiode Hamamatsu Si PIN photodiode S6036
As I don't have much knowledge about circuit, I think a reverse voltage supply and a resistor are enough to build the circuit:
But, when I googled for a photodetecting circuit, the most examples are using op-amp. With a further search, I found that a such circuit is called transimpedance amplifier:
With my rough calculation, in the first figure,
R will be
I * R (Suppose that
I is the current by a photodiode.) And in the second figure,
V_OUT at the end of the op-amp will be
I_P * R_F.
Both equations have the same form. Then, what reason makes TIA circuit si the widely used photodetecting circuit? TIA circuit can have higher gain? bandwidth? or stability?