The simulaiton of 2-order Low Pass Filter

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yyliang

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Hello,I am designing a 2-order LPF,but I don't know how to do the simulation of AC characteristics for closed loop LPF and open loop LPF,can somebody help me?
Thanks a lot!
 

It is same as simulating an OPAMP if the filter is continuous time.
 

For AC response is like OPamp simualtion .
But you need to run transient , then check the HD2,HD3 , The linearilty is important in the Filter design
 

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