I want to build a photodiode amplifier to get an AC signal at a frequency of 1 Mhz.
My photodiode has a parasitic capacitance of about 4pF.
I want my system to work in a dark room or with sun light beams on the photodiode. => The photocurrent would vary from about 0.1µA to 70µA. The AC signal will be about 0.3µA.
I tried to simulate different topologies (transimpedance amplifier, etc) without any good results.
It seems that I don't succeed to remove the DC component properly...
Any help will be appreciated !
Different topics I read:
Thank you !