TPL0401A-10DCKR datasheet(11/22 Pages) TI

部件名	TPL0401A-10DCKR

功能描述	128 TAPS Single Channel Digital Potentiometer with I2C Interface

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制造商	TI [Texas Instruments]

网页	http://www.ti.com

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11 / 22 page

DDR3 DIMM1

1.5 V

VREF1

_

+

1 kW

DPOT

TPL0401A/B

OP-AMP

LMV321

1 kW

TPL0401A

TPL0401B

TPL0401C

www.ti.com

SLIS144A – SEPTEMBER 2011 – REVISED MARCH 2012

TYPICAL APPLICATION

Figure 15. DDR3 Voltage Reference Adjustment

Below table shows Ideal values of resistance for a 10k

Ω DPOT. The absolute values can vary significantly, but

the ratio (Rhw/Rwl) is extremely accurate.

Table 1. Resistance Values Table

Step

Binary

Rwl (k

Ω)

Rhw (k

Ω)

Rhw/Rwl

0

0.00

10.00

0.00

1

0.08

9.92

0.01

2

10

0.16

9.84

0.02

3

11

0.23

9.77

0.02

4

100

0.31

9.69

0.03

5

101

0.39

9.61

0.04

6

110

0.47

9.53

0.05

7

111

0.55

9.45

0.06

8

1000

0.63

9.38

0.07

9

1001

0.70

9.30

0.08

10

1010

0.78

9.22

0.08

11

1011

0.86

9.14

0.09

12

1100

0.94

9.06

0.10

13

1101

1.02

8.98

0.11

14

1110

1.09

8.91

0.12

15

1111

1.17

8.83

0.13

16

10000

1.25

8.75

0.14

17

10001

1.33

8.67

0.15

18

10010

1.41

8.59

0.16

19

10011

1.48

8.52

0.17

20

10100

1.56

8.44

0.19

21

10101

1.64

8.36

0.20

22

10110

1.72

8.28

0.21

23

10111

1.80

8.20

0.22

24

11000

1.88

8.13

0.23

25

11001

1.95

8.05

0.24

26

11010

2.03

7.97

0.25

27

11011

2.11

7.89

0.27

28

11100

2.19

7.81

0.28

29

11101

2.27

7.73

0.29

30

11110

2.34

7.66

0.31

31

11111

2.42

7.58

0.32

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类似零件编号 - TPL0401A-10DCKR

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Texas Instruments	TPL0401A-10DCKR	328Kb / 18P	[Old version datasheet] 128 TAPS Single Channel Digital Potentiometer with I2C Interface
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