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AD7147 Scheda tecnica(PDF) 4 Page - Analog Devices

Il numero della parte AD7147
Spiegazioni elettronici  CapTouch??Programmable Controller for Single-Electrode Capacitance Sensors
PDF  68 Pages
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD7147 Scheda tecnica(HTML) 4 Page - Analog Devices

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AD7147
Rev. 0 | Page 4 of 68
Table 2. Typical Average Current in Low Power Mode1
Current Values of Conversion Stages (μA)
Low Power
Mode Delay
Decimation
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, T = 25°C, load = 5 pF.
Table 3. Maximum Average Current in Low Power Mode1
Current Values of Conversion Stages (μA)
Low Power
Mode
Delay
Decimation
Rate
1
2
3
4
5
6
7
8
9
10
11
12
200 ms
64
27.71
31.65
35.56
39.44
43.28
47.1
50.89
54.64
58.37
62.07
65.74
69.38
128
32.96
40.72
48.37
55.89
63.3
70.59
77.77
84.84
91.8
98.66
105.41
112.07
256
43.28
58.37
72.99
87.17
100.92
114.26
127.22
139.8
152.03
163.92
175.48
186.73
400 ms
64
24.61
26.6
28.58
30.55
32.51
34.47
36.42
38.36
40.29
42.21
44.13
46.04
128
27.26
31.21
35.12
39
42.85
46.67
50.46
54.22
57.95
61.65
65.33
68.97
256
32.51
40.29
47.94
55.47
62.88
70.18
77.36
84.44
91.41
98.27
105.03
111.69
600 ms
64
23.58
24.91
26.23
27.55
28.87
30.18
31.5
32.8
34.11
35.41
36.7
38
128
25.35
27.99
30.62
33.24
35.84
38.43
41
43.56
46.11
48.64
51.16
53.66
256
28.87
34.11
39.29
44.41
49.48
54.5
59.46
64.38
69.24
74.05
78.81
83.53
800 ms
64
23.06
24.06
25.05
26.05
27.04
28.03
29.02
30
30.98
31.97
32.95
33.92
128
24.39
26.38
28.36
30.33
32.29
34.25
36.2
38.14
40.07
42
43.91
45.82
256
27.04
30.98
34.9
38.78
42.64
46.46
50.25
54.01
57.74
61.45
65.12
68.77
1 VCC = 3.6 V, TA = −40oC to +85°C, load = 5 pF.



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