Transimpedance Ampifier - Input Referred Noise Current Density

[Puppet123]

Hello,

I am designing a TIA in Cadence, input is current (an idc component), output is voltage (a capacitive load)

I want the input referred noise current density in RMS.

I do a noise analysis. In the noise analysis, I select the input as my input current, and the output as my output voltage node, referenced to ground.

I run the noise analysis. When I go to Print->Noise Summary, I select the bandwidth to be 1Hz to my 3dB Frequency of my TIA. Then, I get the total input referred noise as a number. I select "V" as my unit.

I run it up to the 3db Bandwidth of my TIA (not sure if this is correct, some say run it to 2X BW)

Is this the Input Referred Noise Current Density in RMS ?

I want to eventually get the average input referred noise current density when I divide this RMS value generated by Cadence by the square root of the 3db frequency of my TIA.

Is this correct, or should I do this in S Parameter analysis ?

Thanks.