Author Topic: Help with transfer function and circuit design  (Read 962 times)

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Offline pas2007Topic starter

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Help with transfer function and circuit design
« on: September 25, 2015, 12:47:48 pm »
Hello i am new to this forum.

I want to design a circuit with 5 opamps that implements this function transfer: G(s)=10/[(s+1) (s+5)]

it must be like this: https://www.dropbox.com/s/opsaabvrvighvqm/opamp.JPG?dl=0

i don't know much about this type of project but any help would be great.

Thank you
 

Offline LvW

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Re: Help with transfer function and circuit design
« Reply #1 on: September 27, 2015, 09:46:12 am »
Hello i am new to this forum.

I want to design a circuit with 5 opamps that implements this function transfer: G(s)=10/[(s+1) (s+5)]

it must be like this: https://www.dropbox.com/s/opsaabvrvighvqm/opamp.JPG?dl=0

i don't know much about this type of project but any help would be great.

Thank you

It is surprising that you are going to use 5 opamps for such a simple circuit.
It is a second order lowpass that can be realized by a cascade of two opamp circuits as shown in the link.
As an alternative, you can use two simple first order RC stages and a separate gain stage.
Together with buffer decoupling you need three opamps.
 


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