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Op Amp LPF

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gary_choo

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Hello everybody, I'm Gary from Japan, i have some problem on finding out the Gain and Cut Off Frequency of a Op-Amp LPF using in my Audio circuit. Can anybody help me on the calculation and the theory as well as possible? Thanks for your help..
 

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Your circuit is using a Split Supply op-amp in a single supply circuit. But here is a typical operation of this type of LP Filters

Lots of Math, Have Fun.
 

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