Tool/software:
Hello,
I am working on a photodiode stage based on an integrator using a JFET op-amp and a reed relay to reset the integrator.
The photodiode current is in the range [0, 10pA] with an integration time of 2s.
I would like to modify this stage to avoid using a reed relay to reset the integrator and to add an offset compensation The integrator is replaced by a transimpedance stage and the integrator integrates a higher current.
I would like to be able to compare performances of different stages especially the signal/noise ratio.
I am not familiar with the estimate of the noise and I would like to know what is the best approach.
Ideally I would like to find an application note with an example I could follow to match my application.
Shall I use the noise analysis in Tina?
Thanks for your help.
