constant current source of 10uA.

[botthe.]

I am to design a current source using transistors or opamps to get a constant current source of 10uA to connect it to a BJT differntial amplifier.the problem is current mirrors cannot work .

 

[crutschow]

Perhaps one of these will work.

 

[Junus2012]

How we could the reason if you didn't show the circuit ??? post it so the people can identify the error

I am to design a current source using transistors or opamps to get a constant current source of 10uA to connect it to a BJT differntial amplifier.the problem is current mirrors cannot work .