Datasheet

1 03 2458 67910111214 1315
r rr rrrr rrrr0r0r0r0 r0r0
RAILVn
V
RAILn
+
RAILVn
1024
V
REF
(1)
V
RAILn
+
RAILVn
1024
V
REF
R
PULLDOWN
) R
PULLUP
R
PULLDOWN
(2)
UCD9080
www.ti.com ................................................................................................................................................... SLVS692E – SEPTEMBER 2006 – REVISED MAY 2008
A rail voltage is read with a 16-bit access. The auto-increment feature of the UCD9080 allows multiple rail
voltages to be read with a single access.
A rail voltage is provided as a 10-bit value in an unsigned format:
The following formulas can be used to calculate the actual measured rail voltage:
Without external voltage divider:
With external voltage divider:
Copyright © 2006 – 2008, Texas Instruments Incorporated Submit Documentation Feedback 15
Product Folder Link(s) :UCD9080