Operational amplifier band pass filter
-a sure fire operational amplifier or op-amp active band pass filter
circuit
The design of band pass filters can become very involved even
when using operational amplifiers. However it is possible to simplify the design
equations while still being able to retain an acceptable level of performance of
the operational amplifier filter for many applications.
Circuit of the operational amplifier active band pass
filter
As only one operational amplifier is used in the filter
circuit, the gain should be limited to five or less, and the Q to less than ten.
In order to improve the shape factor of the operational amplifier filter one or
more stages can be cascaded. A final point to note is that high stability and
tolerance components should be used for both the resistors and the capacitors.
In this way the performance of the operational amplifier filter will be
obtained.
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