[SI-LIST] Re: Battery Monitoring PCB design tradeoff...
- From: "Boyd, Carl S" <carl.s.boyd@xxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Mon, 29 Nov 2004 17:16:45 -0500
Bruno
Noise pickup will be predominantly by the traces and not by the IC
itself, keep the sense line traces short. Use a 4 terminal resistor for
best accuracy with a sense resistance of 30 mOhms you can probably cheat
with a 4 trace hookup
Carl S Boyd
Lockheed Martin
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Bruno Cardeira
Sent: Monday, November 29, 2004 4:44 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Battery Monitoring PCB design tradeoff...
Hello to all!
I'm doing a battery monitoring card with the MAX1660.
The card basicaly has a high current loop (this loop has the pack
external connector, the battery connector and a 30mOhm resistor to
measure
the current). My doubt is:
where should I put the analog sampling part of the MAX1660?
Solution 1
+Near the sense resistor
Pro:
-> minimize the trace length from the sense resistor to the analog
input
Con:
-> more vulnerable to noise
Solution 2
+Far from the sense resistor
Pro:
-> avoid the noise generated by the high current loop
Con:
-> the trace length from the sense resistor to the analog input is
bigger
Maxim in the MAX1660 Eval kit puts the Max1660 far from the high current
loop (the trace from the sense resistor is bigger).
Is this the best solution?
Thanks in advance
Best Regards
Bruno
------------------------------------------------------------------
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 FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
------------------------------------------------------------------
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 FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts: