Hey all. So I been trying to buy a narrow BPF and on the datasheets it'll say something like: +/- 12.5 under 6dB bandwidth for a specific component. Here is a datasheet for reference if needed: http://pdf1.alldatasheet.com/datasheet-pdf/view/87544/ETC/CFWS455CY.html

My question is, does +/- 12.5 Bandwidth mean 25 bandwidth?
By +12.5 and -12.5 are those the pass band regions to the right and left of the center frequencies respectively?

Thank you.

 

Hello,

Yes, the +/- 12.5 will mean a bandwidth of 25 kHz around the center frequency.
You also see the bandwidth at 40 dB attenuation given.
This will tell you how steep the filter is.

Bertus

 

Hello,

Yes, the +/- 12.5 will mean a bandwidth of 25 kHz around the center frequency.
You also see the bandwidth at 40 dB attenuation given.
This will tell you how steep the filter is.

Bertus

Thank you.