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.
 

rp276
have a look at the "Op Amps for Everyone" application notes paper from Texas Instruments.
Chapter 16 covers what you are asking about on Active Filters with numerous other chapters on topics you may find of use.
Download from here: www.ti.com/lit/an/slod006b/slod006b.pdf

Mik
 

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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