> -----Original Message----- > From: Scott Dattalo [SMTP:scott@DATTALO.COM] > Sent: Friday, February 21, 2003 1:40 PM > To: PICLIST@MITVMA.MIT.EDU > Subject: Re: [EE]:Analog filter design... > > To achieve 0.01% flatness and 40dB attenuation at 700kHz will require > either a Chebychev II or an elliptic filter. The Chebychev type II filters > are monotonic in the passband as opposed to Chebychev type I filters > (which what most people simply call Chebychev filters) which are monotonic > in the stop band. > I don't know much about the Type 2 Chebyshev, but isn't the phase response of an elliptic filter fairly horrible? Mike -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads