[SI-LIST] Re: Risetime Filters
- From: wolfgang.maichen@xxxxxxxxxxxx
- To: "Jim (James) Antonellis" <janton@xxxxxxxxxxxx>
- Date: Tue, 16 Feb 2010 21:59:28 -0800
Hello Jim,
depending on your application, you may want to have a look at Minicircuits
(at their site look for "Filters" rather than "Rise Time Converters").
While Picosecond Pulse Labs is IMHO the cream of the crop in terms of
time-domain performance, you pay for what you get (= a lot!). Minicircuits
is more geared towards RF/Microwave rather than digital, but up to a few
GHz / Gbits/sec I found their products to be very usable for digital for a
fraction fo the cost; which is a big issue if you need many pieces for
your setup, or need to duplicate your setup several times. In any case,
for time domain applications (as rise time converters) you need to go for
low-pass Bessel or Gaussian filters (not Chebycheff or Butterworth, which
have significant overshoot and ringing); Minicircuits has a category
called "low pass, flat time delay".
For lower frequency ranges (a few 100 MHz LPF bandwidth limit) TTE
(www.tte.com) may be interesting as well. Last time I checked they offered
Bessel and Gaussian LPFs up to 200 MHz cutoff.
Wolfgang
"Jim (James) Antonellis" <janton@xxxxxxxxxxxx>
Sent by: si-list-bounce@xxxxxxxxxxxxx
02/16/2010 05:17 PM
To
"si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
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Subject
[SI-LIST] Risetime Filters
Hello,
In addition to the units from Agilent, Marki and Picosecond Pulse Labs, do
you know
of any other (SMA based) Risetime filters (AKA Low Pass Filter, Transition
Time Converter)?
Thx,
Jim
Jim Antonellis
Principal SI Engineer
Broadcom Corporation
janton@xxxxxxxxxxxx
www.broadcom.com
Office: 978.689.1669
Cell: 978.618.4745
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