Hello dear electronics fans,

I am studying transimpedance amplifier (TIA) circuit for photodiodes
with bandwidth approaching 2Gbps. So far I have seen in the literature,
Op Amp like TIA IC are used to amplifier the current signals to voltage
signals. Their analysis are based upon such Op Amp configuration.

1. Is there any fundamental advantage of using IC to amplifier?
2. I am thinking of using BJT to amplifier. Is there any good literature
on this topic? I expect those BJT's for RF use can extend the bandwidth
beyong 2Gbps.

Thank you very much in advance.

James Cheung