PCB power planes? - sci.electronics.design

Message from discussion PCB power planes?

Joerg

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More options Jul 8 2008, 12:39 am

Newsgroups: sci.electronics.design

From: Joerg <notthisjoerg...@removethispacbell.net>

Date: Mon, 07 Jul 2008 12:39:41 -0700

Local: Tues, Jul 8 2008 12:39 am

Subject: Re: PCB power planes?

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Scott Seidman wrote:
> Joerg <notthisjoerg...@removethispacbell.net> wrote in news:PVsck.21945
> $co7.12...@nlpi066.nbdc.sbc.com:

>> If you use the R2R ladders of DACs you could make one around chips like
>> these:
>> http://datasheets.maxim-ic.com/en/ds/MAX274-MAX275.pdf

> Plenty of companies package that sort of thing in a nice "programmable
> resistor" package, and give you a lovely cascadable serial bus to program
> them as well.

Yes, but then it gets expensive because you need a whole lot of them.
With DACs you can luck out and find a cheap 8-pack.

If you know a good digital-pot bargain let us know. But not from a
company that starts with "M" :-)

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

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