repah
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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.
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 ?
Also, not sure if I should run my noise simulation up to the 3dB bandwidth of the TIA or 2X the 3dB Bandwidth as some have suggested. I ran it to my 3dB Bandwidth.
Thanks.
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