Current mirror amplification for photodetector circuit

[hysamir]

I am designing current mirror amplification for photodetector circuit. So basically reverse photodiode in nano amp. can i amplify that current?

the size of current matters when we considering current mirror amplification?

will the transistor will be cut off?

(i am doing it with MOSFET using cadence)

 

[lavitaebelle]

current mirror

If the transistor is cut off, you will not see nano amp current.

You can current mirror nA current in a MOS, just make sure that the lengths of the devices are pretty big. This is to ensure that the transistors are in saturation and not gone into subthreshold. If the transistor is in subthreshold, proper current mirror action will not happen.

 

[shlunar]

current mirror

current to voltage