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AD7147 データシート(PDF) 6 Page - Analog Devices

部品番号 AD7147
部品情報  CapTouch Programmable Controller for Single-Electrode Capacitance Sensors
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

AD7147 データシート(HTML) 6 Page - Analog Devices

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Data Sheet
AD7147
Rev. D | Page 5 of 72
AVERAGE CURRENT SPECIFICATIONS
Table 2. Typical Average Current in Low Power Mode1
Low Power
Decimation
Current Values of Conversion Stages (μA)
Mode Delay
Rate
1
2
3
4
5
6
7
8
9
10
11
12
200 ms
64
20.83
24.18
27.52
30.82
34.11
37.37
40.6
43.81
46.99
50.16
53.3
56.41
128
25.3
31.92
38.45
44.87
51.21
57.45
63.6
69.66
75.63
81.52
87.33
93.05
256
34.11
46.99
59.51
71.66
83.47
94.94
106.1
116.96
127.52
137.81
147.82
157.58
400 ms
64
18.17
19.86
21.55
23.23
24.9
26.57
28.23
29.88
31.53
33.17
34.81
36.44
128
20.43
23.79
27.12
30.43
33.72
36.98
40.22
43.43
46.62
49.78
52.93
56.05
256
24.9
31.53
38.06
44.5
50.83
57.08
63.23
69.3
75.28
81.17
86.98
92.71
600 ms
64
17.28
18.41
19.54
20.67
21.79
22.91
24.03
25.14
26.25
27.36
28.47
29.57
128
18.79
21.04
23.28
25.51
27.73
29.94
32.13
34.32
36.49
38.65
40.81
42.95
256
21.79
26.25
30.67
35.04
39.37
43.66
47.9
52.11
56.27
60.39
64.47
68.51
800 ms
64
16.84
17.69
18.53
19.38
20.23
21.07
21.91
22.75
23.59
24.43
25.26
26.09
128
17.97
19.66
21.35
23.03
24.7
26.37
28.03
29.69
31.34
32.98
34.62
36.25
256
20.23
23.59
26.93
30.24
33.53
36.79
40.03
43.24
46.43
49.6
52.74
55.86
1 VCC = 3.3 V, TA = 25°C, load = 50 pF.
Table 3. Maximum Average Current in Low Power Mode1
Low Power
Decimation
Current Values of Conversion Stages (μA)
Mode Delay
Rate
1
2
3
4
5
6
7
8
9
10
11
12
200 ms
64
27.96
32.06
36.12
40.15
44.16
48.12
52.06
55.97
59.85
63.69
67.51
71.29
128
33.41
41.49
49.44
57.26
64.97
72.55
80.02
87.37
94.61
101.74
108.77
115.69
256
44.16
59.85
75.05
89.79
104.09
117.97
131.45
144.53
157.25
169.61
181.63
193.33
400 ms
64
24.74
26.8
28.86
30.91
32.95
34.99
37.01
39.03
41.04
43.04
45.03
47.02
128
27.49
31.59
35.66
39.7
43.71
47.68
51.62
55.53
59.41
63.26
67.08
70.87
256
32.95
41.04
49
56.83
64.54
72.12
79.6
86.96
94.2
101.34
108.37
115.3
600 ms
64
23.66
25.04
26.42
27.79
29.17
30.53
31.89
33.25
34.61
35.96
37.31
38.66
128
25.5
28.25
30.99
33.71
36.41
39.1
41.78
44.44
47.09
49.72
52.34
54.95
256
29.17
34.61
40
45.33
50.6
55.82
60.98
66.09
71.15
76.15
81.1
86.01
800 ms
64
23.12
24.16
25.19
26.23
27.26
28.29
29.32
30.34
31.36
32.38
33.4
34.42
128
24.5
26.57
28.63
30.68
32.72
34.76
36.79
38.8
40.81
42.81
44.81
46.79
256
27.26
31.36
35.44
39.47
43.48
47.46
51.4
55.31
59.19
63.04
66.86
70.66
1 VCC = 3.6 V, TA = −40°C to +85°C, load = 50 pF.


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