Hi,
in the attachment "TIA_dial_supply" you see my first circuit for a transimpedance amplifier. In this circuit the reference voltage at the non-inverting input is just in between the negativ and postive supply voltage of the OpAmp. To get this reference voltage, the circuit compromises a rail-splitter.
Then, I heard about Input Common-Mode Voltage range, and I was wondering: if an OpAmp even accepts voltages below his negative supply voltage, I may not need the rail-splitter anymore.
So, I came up with the circuit "TIA_single_supply". The difference to the 1st circuit: the non-inverting input and the negative supply voltage are now connected with GND.
But according to the simulations, this is not working. Interestingly, the Output-voltage is even lower than the input voltage in case of the single supply.
(The choosen OpAmp has an Input Common-Mode Voltage range of V- - 0.2V, and V+ + 0.2V.)
Perhaps somebody can give me a hint, where my thinking is wrong.
Thanks!