H

L

W

Where D = Decimal Value of Wiper Code

TPL0501

SLIS136A

– SEPTEMBER 2011 – REVISED SEPTEMBER 2011

www.ti.com

IDEAL RESISTANCE VALUES

Below table shows the ideal values for DPOT with end-to End resistance of 10k

Ω. The absolute values of

resistance can vary significantly but the Ratio (Rhw/Rwl) is extremely accurate.

10 k

Ω

Step

Binary

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

10000

6.25

93.75

0.07

17

10001

6.64

93.36

0.07

18

10010

7.03

92.97

0.08

19

10011

7.42

92.58

0.08

20

10100

7.81

92.19

0.08

21

10101

8.20

91.80

0.09

22

10110

8.59

91.41

0.09

23

10111

8.98

91.02

0.10

24

11000

9.38

90.63

0.10

25

11001

9.77

90.23

0.11

26

11010

10.16

89.84

0.11

27

11011

10.55

89.45

0.12

28

11100

10.94

89.06

0.12

29

11101

11.33

88.67

0.13

30

11110

11.72

88.28

0.13

31

11111

12.11

87.89

0.14

32

100000

12.50

87.50

0.14

8

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