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https://designers-guide.org/forum/YaBB.pl Design >> Analog Design >> About the Opamp in Integrator https://designers-guide.org/forum/YaBB.pl?num=1241695482 Message started by NiceFeng on May 7th, 2009, 4:24am |
Title: About the Opamp in Integrator Post by NiceFeng on May 7th, 2009, 4:24am Hi, all, The picture shows a simple opamp-based integrator. Here it is required that wt >> 1/R1C1, is wt here referring to opamp with the loading effect of R1C1? Or when I design opamp, I want its wt >> 1/R1C1, should I just put a simple CL (which may be gate capacitance of its later blocks), or CL//(C1+R1)? or else? Thanks a lot! Feng |
Title: Re: About the Opamp in Integrator Post by buddypoor on May 7th, 2009, 4:54am wt (transit frequency) is the unity gain frequency of the (single pole) opamp (as listed in the data sheet) without any feedback circuitry . |
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