Hi guys,
I am designing a transimpedance amplifier with current source from an avalanche photodiode model from hamamatsu with capacitance of 15pF and the detector will detect the input signal from (very far laser source) about a few picoampere (pA), which is very low signal. The op amp that I want to use is OPA637.
I consider to use 2 stage of amplifier circuit for this system since I want the output voltage is about 1 V. and also low noise associated with AC coupling(want to remove ambient light).
Any help for my photodiode amplifier design?
All comments and helps would be very appreciated!