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Low-power op amp in subthreshold region

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sreelekshmivipin

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Low power op amp in subthreshold region

I have to design a low power opamp working in subthreshold region.Can anyone suggest the step by step procedure with the formulas for the design.or please share the books or videos that will help.I am planning for a two stage low power op amp.

Thanks,
Sreelekshmi
 

Re: Low power op amp in subthreshold region

Thanks for the reply.I am planning to design one with power consumption less than 6nW.But in the pdf you shared the design logic of the W/L of each mos is not given.How to arrive at the aspect ratio of each transistor is what I am looking for.Also since the op amp works under subthreshold,the calculation method of the subthreshold current is also my concern.
 

Re: Low power op amp in subthreshold region

sreelekshmivipin said:
I am planning to design one with power consumption less than 6nW. But in the pdf you shared the design logic of the W/L of each mos is not given.
Click to expand...
Of course it's given - for 3 different power/bandwidth design configurations: Binkley__chap.5-Figure_5.1.png
Those who can read are better off.​

sreelekshmivipin said:
How to arrive at the aspect ratio of each transistor is what I am looking for.Also since the op amp works under subthreshold,the calculation method of the subthreshold current is also my concern.
Click to expand...
My recommendation: Read - better: study - the a.m. book!
 

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