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From: "Bill Lewis"
Subject: Re: Active Filter ICs
Date: Wed, 18 Sep 2002 22:01:49 +0100
Organization: Kijoma Solutions Ltd
Reply-To: "Bill Lewis"
NNTP-Posting-Date: 18 Sep 2002 21:07:13 GMT
X-Newsreader: Microsoft Outlook Express 5.50.4807.1700
www.maxim-ic.com do a range of multi pole switched cap filters such as the
these will do 100Hz cutoff altho you will need to make sure 10kHz isnt a
problem for you (the switching clock)
that can usually be removed with a simple R/C filter or two added too the
due to the way these LPF filters work they have a sharp phase rotation so
with sufficient feedback op-amp circuitry could make sharp notch or bandpass
filters as well.
Kijoma Solutions Ltd
RF - Analogue - Digital - Software
Electronic Product Design & Consultancy
Email : news@kiSPjoAMma.com ( remove the spam)
There are only 10 types of the people in the world
those who understand binary and those who don't
"Chris" wrote in message
> I have been researching Active Filtering (Notch and Low Pass). My
> trusty Horowitz & Hill recommends IC's to reduce capacitor-matching
> error. It seems most or all of these devices are off the market now.
> Can anyone explain why? Is DSP that much better at this kind of
> signal processing? I am only working in a DC to 100 Hz bandwidth, if
> that is any help.
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