[SI-LIST] Re: Criteria for ferrite beads [was Re: anlog and digital power plane isolation with ferrite bead good idea?]
- From: steve weir <weirsi@xxxxxxxxxx>
- To: Alfred Lee <alfred1520list@xxxxxxxxx>
- Date: Wed, 05 Jan 2011 02:48:36 -0800
Alfred, sure: It is Session 11-TA3 "PDN Application of Ferrite Beads".
It will be presented as one of the Tuesday morning power sessions.
Steve.
Alfred Lee wrote:
> Hi Steve,
>
> Understood. Not a problem. Can you share the title so I can be on the look
> out? Thanks.
>
> Regards,
> Alfred
>
> "steve weir" <weirsi@xxxxxxxxxx> wrote:
>
>
>> Alfred, it is not that I want to be a tease, but the second point is
>> addressed in my DesignCon paper, which I am obligated not to preempt
>> before it is presented next month. But you are following the right
>> train of reasoning.
>>
>> Steve.
>>
>> alfred1520list wrote:
>>
>>> Dear List,
>>>
>>> I simply want to express my appreciation for this exceptionally
>>>
>> educational list.
>>
>>> Dear Steve,
>>>
>>> ----- Original Message -----
>>> From: "steve weir" <weirsi@xxxxxxxxxx>
>>> Sent: Monday, January 03, 2011 1:07 PM
>>> Subject: [SI-LIST] Re: anlog and digital power plane isolation with
>>>
>> ferrite bead good idea?
>>
>>>
>>>
>>>> The places where ferrite beads make sense are very distinct.
>>>>
>> Usually,
>>
>>>> no more than casual inspection of PDN requirements immediately
>>>>
>> indicate
>>
>>>> whether a ferrite bead based filter is worth considering.
>>>>
>>>>
>>> For the benefit of the rest of us trying to get there, could you
>>>
>> elaborate
>>
>>> on the second statement? Would that be looking at the difference
>>> between the power spectral density of the supply noise and the
>>>
>> maximum
>>
>>> tolerable noise power spectral density of the IC and say that there
>>>
>> needs to
>>
>>> be X dB of attenuation and ferrite beads would provide Y dB which is
>>> greater than X and so it is obvious?
>>>
>>> If so, how to generate the two spectral plots if they are not readily
>>>
>>> available?
>>>
>>> Thank you very much for your time.
>>>
>>>
>>> Best Regards,
>>> Alfred Lee
>>>
>>>
>>>
>>> ------------------------------------------------------------------
>>> To unsubscribe from si-list:
>>> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>>>
>>> or to administer your membership from a web page, go to:
>>> //www.freelists.org/webpage/si-list
>>>
>>> For help:
>>> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>>>
>>>
>>> List technical documents are available at:
>>> http://www.si-list.net
>>>
>>> List archives are viewable at:
>>> //www.freelists.org/archives/si-list
>>>
>>> Old (prior to June 6, 2001) list archives are viewable at:
>>> http://www.qsl.net/wb6tpu
>>>
>>>
>>>
>>>
>>>
>> --
>> Steve Weir
>> IPBLOX, LLC
>> 150 N. Center St. #211
>> Reno, NV 89501
>> www.ipblox.com
>>
>> (775) 299-4236 Business
>> (866) 675-4630 Toll-free
>> (707) 780-1951 Fax
>>
>
>
--
Steve Weir
IPBLOX, LLC
150 N. Center St. #211
Reno, NV 89501
www.ipblox.com
(775) 299-4236 Business
(866) 675-4630 Toll-free
(707) 780-1951 Fax
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List technical documents are available at:
http://www.si-list.net
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
