I am kindly asking advice on the following matter:
We are considering to use the AD4530-1 and the LTC6079 in an TIA configuration to condition
the photocurrent of a photodiode in a very low light application.
Since the circuit design will be single supply the following question arises:
Typically in single supply TIA circuits the opamp is biased on the positive input to move the signal
level away from the negative rail. The data sheet of the ADA4530-1 states that on page 31
"its input voltage range includes the lower supply rail and has a rail-to-rail output" .
Likewise the datasheet of the LTC6079 states on page 9
"The input stage of LTC6078/LTC6079 combines both PMOS and NMOS differential pairs,
extending its input common mode voltage range to both positive and negative supply voltages"
Now, does this mean both opamps can be operated in an TIA configuration to condition very low
currents without biasing the positive opamp terminal, but connecting it to GND?
Any advice is much appreciated!
Thank you very much