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I'm trying to develop a band pass filter with center frequency 10 kHz:

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The frequency response doesn't look good, but when i replace the circuit above with an ideal op-amp, I have the correct response:

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Why doesn't the filter circuit with the real op-amp work as intended?

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  • \$\begingroup\$ At first you should read the datasheet of the used real op amp very carefully and compare it with the requirements of your circuit. \$\endgroup\$
    – Uwe
    Commented Dec 11, 2022 at 13:24
  • \$\begingroup\$ @anilberg I have rejected your edit because it obscures the meaning of band pass filter (by abbreviation) and incorrectly renames "op-amp" as "OpAmp" \$\endgroup\$
    – Andy aka
    Commented Dec 11, 2022 at 13:53

1 Answer 1

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Why isn't the frequency response of this band pass filter circuit the same as the band pass filter with an ideal op amp?

You need to make the following changes: -

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An ideal op-amp won't care what the power rails are or where the resistors above are connected to in terms of DC level.

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