Datasheet

H
L
W
R
HW
R
WL
R
TOT
R
WL
= R
TOT
x D/256
R
HW
= R
TOT
x (1 –(D/256))
Where D = Decimal Value of Wiper Code
TPL0102
SLIS134B –MARCH 2011– REVISED AUGUST 2011 www.ti.com
Figure 8. Acknowledgment on the I
2
C Bus
IDEAL RESISTANCE VALUES
Below table shows the ideal values for DPOT with end-to End resistance of 100kΩ. The absolute values of
resistance can vary significantly but the Ratio (Rhw/Rwl) is extremely accurate.
Step Binary R
HW
(kΩ) R
WL
(kΩ) R
HW
/R
WL
0 0 0.00 100.00 0.00
1 1 0.39 99.61 0.00
2 10 0.78 99.22 0.01
3 11 1.17 98.83 0.01
4 100 1.56 98.44 0.02
5 101 1.95 98.05 0.02
6 110 2.34 97.66 0.02
7 111 2.73 97.27 0.03
8 1000 3.13 96.88 0.03
9 1001 3.52 96.48 0.04
10 1010 3.91 96.09 0.04
11 1011 4.30 95.70 0.04
12 1100 4.69 95.31 0.05
13 1101 5.08 94.92 0.05
14 1110 5.47 94.53 0.06
15 1111 5.86 94.14 0.06
16 Copyright © 2011, Texas Instruments Incorporated