Can not use Cb at ADN2820 application ? If it need to use, and must be so close to the TIA do? Could via pin after pin capacitance extra supply.
Since I am now unable to encounter TIA output response amplitude, uncertain whether they are the VCC impact, because I ADN2882 is not needed.
I'm sorry, EngineerZone does not currently provide a support community for ADN2820.
To get support on this product, I would suggest submitting your question to the Analog Devices support team in your region. You can find the appropriate support contact on our website at: http://www.analog.com/support
Apology for the very late notice.