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layout a small bias current

 
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jojoyce



Joined: 04 Mar 2008
Posts: 2
Post04 Oct 2008 1:46   layout a small bias current
Hi all,

I am thinking using 2uA current as bias current in current mirror. Is there any potential risk and how can I do some improvement in the layout. Thanks

Jojoyce
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walker5678



Joined: 17 May 2006
Posts: 123
Helped: 4
Post06 Oct 2008 4:52   Re: layout a small bias current
That's OK
Mmaybe you should be careful not make the transistor work in the subthreshold region. and if the bias need to be established very quickly, then the transistor should not be two large, because it will make large parasitic capacitance.
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