Tips on a protection pcb for the OS4000 compass module

Questions relating to designing PCBs

Moderator: phalanx

Tips on a protection pcb for the OS4000 compass module

Postby killersquirel11 » Tue Feb 28, 2012 7:48 pm

So we got the nice, expensive, (now retired) OS4000.
http://www.sparkfun.com/products/8960

I was wondering if you guys had any tips or tricks to improve on the schematic I've come up with for protection:

Image
if the image doesn't show up in its entirety:
http://i480.photobucket.com/albums/rr170/killersquirel11/Schematic.png

Misc parts:
-Open-drain buffer:
http://search.digikey.com/us/en/product ... -ND/965702
-OKI-78SR
http://parts.digikey.com/1/parts/186750 ... w36-c.html
-F1: a 250mA PTC
-D1: 3.6V Zener Diode, 1W

The RJ45 connector is connected to a 5V TTL level UART off of an ARM board. +5Vin is supplied by the ARM board, but really can't supply much current.

So, does anyone feel like tearing this thing to pieces? :doh:

What I'm designing against is the possibility of 24V being applied to any of the pins on the RJ45 connector, in addition to ESD at any of the connectors...
killersquirel11
 
Posts: 14
Joined: Fri Feb 19, 2010 5:32 pm
Location: Madison


Return to PCB Design Questions

Who is online

Users browsing this forum: Bing [Bot] and 1 guest