The ODIN cards are ordered in a 3V3 version or in a 5V version. With some
soldering and with one power regulator IC it is possible to modify a card
from one type to the other. All components on the card are in fact powered
by 3V3 only. The only difference is that with the 5V version a drop-down
power converter is inserted in series with the power line to the components.
How to turn a 5V ODIN into a 3V3 ODIN
Remove regulator IC6 (LT1587CT-3.3)
Bridge 2 rightmost points of the regulator (top view of regulator)
Close the keying hole in the bottom corner of the card to mark it is a
3V3 type card
3V3 ODIN (photo montage)
How to turn a 3V3 ODIN into a 5V ODIN
Remove the bridge at the 2 rightmost points near IC6 (top view of regulator)
Insert regulator IC6 (LT1587CT-3.3)
Open the keying hole in the bottom corner of the card to mark it is a 5V
type card
Please contact Erik
van der Bij if you're at CERN and need a regulator.
