Datasheet
www.ti.com
LOG102
12
SBOS211B
(10)
(11)
(12)
(13)
(14)
(15)
≈++1 003
10
10
0 004 0 003
6
7
.log . .
–
–
= 1.003 (1) + 0.004 + 0.0003
= 1.0073V
Since the ideal output is 1.000V, the error as a percent of
reading is
%
.
%.%error =•=
0 0073
1
100 0 73
For the case of voltage inputs, the actual transfer function is
VVK
V
R
I
E
R
V
R
I
E
R
Nn V
OUT
B
OS
B
OS
OS OUT
=
(
)
±
(
)
±
±
±±11 2
1
1
1
1
1
2
2
2
2
2
∆ log
–
–
Where
E
R
and
E
R
OS OS1
1
2
2
are considered to be zero for large
values of resistance from external input current sources.