Extension Opamp bandwidth

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NurSabrinaMZ

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Hi. I currently doing project on extension of op amp bandwidth using active inductor. Is it possible to get higher bandwith until terahertz as it will cut off the frequency isn't it? And what is the difference of low noise amplifier with opamp?
 

opamp with no internal compensation types?
active inductor means another opamp?
 

Yes. No internal compensation type. The cmos active inductor is applied or include in the opamp circuit
 

19 years ago E. Sackinger published paper explaining what we can achieve by using AIs. In general, one of the most limiting factor is intrinsic bandwidth of transistor. Even if you would add a zero into transfer function by adding an active inductor, it will be compensated at some point by pole related to amplification device used in the AI circuit.
 
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