MCP4432-103ESLASHML datasheet(69/94 Pages) MICROCHIP

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 2010 Microchip Technology Inc.

DS22267A-page 69

MCP443X/5X

TABLE 8-1:

LINEAR TO LOG ATTENUATION FOR 8-BIT DIGITAL POTENTIOMETERS

# of

Steps

-3 dB Steps

-2 dB Steps

-1 dB Steps

Desired

Attenuation

Wiper

Code

Calculated

Attenuation

(1)

Desired

Attenuation

Wiper

Code

Calculated

Attenuation

(1)

Desired

Attenuation

Wiper

Code

Calculated

Attenuation

(1)

0 dB

256

0 dB

256

0 dB

256

0 dB

-3 dB

181

-3.011 dB

-2 dB

203

-2.015 dB

-1 dB

228

-1.006 dB

-6 dB

128

-6.021 dB

-4 dB

162

-3.975 dB

-2 dB

203

-2.015 dB

3-9dB

-8.984 dB

-6 dB

128

-6.021 dB

-3 dB

181

-3.011 dB

-12 dB

64 -12.041 dB

-8 dB

102

-7.993 dB

-4 dB

162

-3.975 dB

-15 dB

46 -14.910 dB

-10 dB

-9.995 dB

-5 dB

144

-4.998 dB

-18 dB

32 -18.062 dB

-12 dB

64 -12.041 dB

-6 dB

128

-6.021 dB

-21 dB

23 -20.930 dB

-14 dB

51 -14.013 dB

-7 dB

114

-7.027 dB

-24 dB

16 -24.082 dB

-16 dB

41 -15.909 dB

-8 dB

102

-7.993 dB

-27 dB

11 -27.337 dB

-18 dB

32 -18.062 dB

-9 dB

-8.984 dB

-30 dB

8 -30.103 dB

-20 dB

26 -19.865 dB

-10 dB

-9.995 dB

-33 dB

6 -32.602 dB

-22 dB

20 -22.144 dB

-11 dB

72 -11.018 dB

-36 dB

4 -36.124 dB

-24 dB

16 -24.082 dB

-12 dB

64 -12.041 dB

-39 dB

3 -38.622 dB

-26 dB

13 -25.886 dB

-13 dB

57 -13.047 dB

-42 dB

2 -42.144 dB

-28 dB

10 -28.165 dB

-14 dB

51 -14.013 dB

-48 dB

1 -48.165 dB

-30 dB

8 -30.103 dB

-15 dB

46 - 14.910 dB

Mute

-32 dB

6 -32.602 dB

-16 dB

41 -15.909 dB

-34 dB

5 -34.185 dB

-17 dB

36 -17.039 dB

-36 dB

4 -36.124 dB

-18 dB

32 -18.062 dB

-38 dB

3 -38.622 dB

-19 dB

29 -18.917 dB

-42 dB

2 -42.144 dB

-20 dB

26 -19.865 dB

-48 dB

1 -48.165 dB

-21 dB

23 - 20.930 dB

Mute

-22 dB

20 -22.144 dB

-23 dB

18 -23.059 dB

-24 dB

16 -24.082 dB

-25 dB

14 -25.242 dB

-26 dB

13 -25.886 dB

-27dB

11 -27.337 dB

-28 dB

10 -28.165 dB

-29 dB

9 -29.080 dB

-30 dB

8 -30.103 dB

-31 dB

7 -31.263 dB

-33 dB

6 -32.602 dB

-34 dB

5 -34.185 dB

-36 dB

4 -36.124 dB

-39 dB

3 -38.622 dB

-42 dB

2 -42.144 dB

-48 dB

1 -48.165 dB

Mute

Note 1:

Attenuation values do not include errors from Digital Potentiometer errors, such as Full Scale Error or Zero

Scale Error.

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