low pass and high pass filter design using opamp

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rp276

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can we configure low pass and high pass filter as inverting configuration using opamp? why? why not? please help..
 

rp276 said:
can we configure low pass and high pass filter as inverting configuration using opamp? why? why not? please help..
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Of course, you can.
For example using the multi-feeedback topology (MFB). Try to start an internet search.
 

yes its possible,i believe just read the passive filters first,the opamp is basically a mere combination of that,now suppose if an RC combination provides a phase shift of 90 degrees so a combination of 2 of such pole(RC combination) will provide a phase shift of 180 degree,i.e it will invert the signal. you can easily find the solution to your query in Sedras. pdfs are available at google easily.
 

Usama Siddiqui said:
a combination of 2 of such pole(RC combination) will provide a phase shift of 180 degree,i.e it will invert the signal.
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Yes - theoretically for infinite frequencies.
Rp276 - forget this answer.

- - - Updated - - -

Usama Siddiqui said:
a combination of 2 of such pole(RC combination) will provide a phase shift of 180 degree,i.e it will invert the signal.
Click to expand...

Yes - theoretically for infinite frequencies.
Rp276 - forget this answer.
 

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