參數(shù)資料
型號: MCP4441-103E/ST
廠商: Microchip Technology
文件頁數(shù): 76/100頁
文件大?。?/td> 0K
描述: IC DGTL POT 129TAPS QUAD 20TSSOP
標(biāo)準(zhǔn)包裝: 74
接片: 129
電阻(歐姆): 10k
電路數(shù): 4
溫度系數(shù): 標(biāo)準(zhǔn)值 150 ppm/°C
存儲器類型: 非易失
接口: I²C(設(shè)備位址)
電源電壓: 2.7 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 20-TSSOP
包裝: 管件
2010 Microchip Technology Inc.
DS22265A-page 77
MCP444X/446X
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
Desired
Attenuation
Wiper
Code
Calculated
Attenuation
Desired
Attenuation
Wiper
Code
Calculated
Attenuation
0
0 dB
256
0 dB
256
0 dB
256
0 dB
1
-3 dB
181
-3.011 dB
-2 dB
203
-2.015 dB
-1 dB
228
-1.006 dB
2
-6 dB
128
-6.021 dB
-4 dB
162
-3.975 dB
-2 dB
203
-2.015 dB
3-9dB
91
-8.984 dB
-6 dB
128
-6.021 dB
-3 dB
181
-3.011 dB
4
-12 dB
64 -12.041 dB
-8 dB
102
-7.993 dB
-4 dB
162
-3.975 dB
5
-15 dB
46 -14.910 dB
-10 dB
81
-9.995 dB
-5 dB
144
-4.998 dB
6
-18 dB
32 -18.062 dB
-12 dB
64 -12.041 dB
-6 dB
128
-6.021 dB
7
-21 dB
23 -20.930 dB
-14 dB
51 -14.013 dB
-7 dB
114
-7.027 dB
8
-24 dB
16 -24.082 dB
-16 dB
41 -15.909 dB
-8 dB
102
-7.993 dB
9
-27 dB
11 -27.337 dB
-18 dB
32 -18.062 dB
-9 dB
91
-8.984 dB
10
-30 dB
8 -30.103 dB
-20 dB
26 -19.865 dB
-10 dB
81
-9.995 dB
11
-33 dB
6 -32.602 dB
-22 dB
20 -22.144 dB
-11 dB
72 -11.018 dB
12
-36 dB
4 -36.124 dB
-24 dB
16 -24.082 dB
-12 dB
64 -12.041 dB
13
-39 dB
3 -38.622 dB
-26 dB
13 -25.886 dB
-13 dB
57 -13.047 dB
14
-42 dB
2 -42.144 dB
-28 dB
10 -28.165 dB
-14 dB
51 -14.013 dB
15
-48 dB
1 -48.165 dB
-30 dB
8 -30.103 dB
-15 dB
46 - 14.910 dB
16
Mute
0
Mute
-32 dB
6 -32.602 dB
-16 dB
41 -15.909 dB
17
-34 dB
5 -34.185 dB
-17 dB
36 -17.039 dB
18
-36 dB
4 -36.124 dB
-18 dB
32 -18.062 dB
19
-38 dB
3 -38.622 dB
-19 dB
29 -18.917 dB
20
-42 dB
2 -42.144 dB
-20 dB
26 -19.865 dB
21
-48 dB
1 -48.165 dB
-21 dB
23 - 20.930 dB
22
Mute
0
Mute
-22 dB
20 -22.144 dB
23
-23 dB
18 -23.059 dB
24
-24 dB
16 -24.082 dB
25
-25 dB
14 -25.242 dB
26
-26 dB
13 -25.886 dB
27
-27dB
11 -27.337 dB
28
-28 dB
10 -28.165 dB
29
-29 dB
9 -29.080 dB
30
-30 dB
8 -30.103 dB
31
-31 dB
7 -31.263 dB
32
-33 dB
6 -32.602 dB
33
-34 dB
5 -34.185 dB
34
-36 dB
4 -36.124 dB
35
-39 dB
3 -38.622 dB
36
-42 dB
2 -42.144 dB
37
-48 dB
1 -48.165 dB
38
Mute
0
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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