minimum frequency with 4472

[Jack_A.]

The AC high pass filters on the 4472 and 4472B are both single pole RC filters with -3dB points of 3.4Hz and 0.5Hz respectively.  Let me know if you need more info.

-Jack

[crimolvic]

thank you Jack.  I am not very familliar with filters... this single-pole RC filter corresponds to a Butterwoth, Bessel, etc. or those filters are more complex?

[Jack_A.]

The single pole RC filter is a more simple filter design than Butterworth, Bessel, etc.  Here's a nice app note I like on filter basics:

http://www.maxim-ic.com/appnotes.cfm/appnote_number/733

-Jack