EVAL-AD7142-1EB データシートの表示（PDF） - Analog Devices
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EVAL-AD7142-1EB
Analog Devices
EVAL-AD7142-1EB Datasheet PDF : 68 Pages
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AD7142
Parameter
Min
POWER
AVCC, DVCC
2.6
VDRIVE
1.65
ICC
1 CIN and CBULK are defined as follows:
PLASTIC OVERLAY
SENSOR BOARD
CAPACITIVE SENSOR
CIN
CBULK
Typ Max
3.3
3.6
3.6
0.9
1
20
16
33
4.5
2.25 18
Unit Test Conditions/Comments
V
V
Serial interface operating voltage
mA In full power mode
μA
Low power mode, converter idle, TA = 25°C
μA
Low power mode, converter idle
μA
Full shutdown, TA = 25°C
μA
Full shutdown
Table 2. Typical Average Current in Low Power Mode, AVCC, DVCC = 3.6 V, T= 25°C, Load of 50 pF on SRC Pin, No Load on SRC
Number of Conversion Stages, Current Values Expressed in μA
Low Power Decimation
Mode Delay Rate =
1
2
3
4
5
6
7
8
9
10
11
12
200 ms
128
26.4 33.3 40.1 46.9 53.5 60
66.5 72.8 79.1 85.2 91.3 97.3
256
35.6 49.1 62.2 74.9 87.3 99.3 111 122.3 133.4 144.2 154.7 164.9
400 ms
128
21.3 24.8 28.3 31.7 35.2 38.6 42
45.4 48.7 52
55.3 58.6
256
26
32.9 39.7 46.5 53.1 59.6 66.1 72.4 78.7 84.9 91
97
600 ms
128
19.6 21.9 24.3 26.6 28.9 31.2 33.5 35.8 38.1 40.4 42.6 44.8
256
22.7 27.4 32
36.6 41.1 45.6 50
54.4 58.8 63.1 67.4 71.6
800 ms
128
18.7 20.5 22.2 24
25.7 27.5 29.2 31
32.7 34.4 36.1 37.8
256
21.1 24.6 28.1 31.5 35
38.4 41.8 45.2 48.5 51.8 55.1 58.4
Table 3. Maximum Average Current in Low Power Mode, AVCC, DVCC = 3.6 V, Load of 50 pF on SRC Pin, No Load on SRC
Number of Conversion Stages, Current Values Expressed in μA
Low Power Decimation
Mode Delay Rate =
1
2
3
4
5
6
7
8
9
10
11
200 ms
128
45.4 53.6 61.5 69.4 77.1 84.7 92.2 99.6 106.8 113.9 121
256
56.2 72 87.2 102 116.3 130.2 143.7 156.8 169.5 181.8 193.8
400 ms
128
39.5 43.6 47.7 51.8 55.8 59.8 63.7 67.6 71.5 75.4 79.2
256
45
53.1 61.1 68.9 76.7 84.3 91.8 99.1 106.4 113.6 120.6
600 ms
128
37.5 40.3 43 45.8 48.5 51.2 53.9 56.5 59.2 61.8 64.5
256
41.2 46.7 52.1 57.4 62.7 67.9 73.1 78.2 83.3 88.3 93.3
800 ms
128
36.5 38.6 40.7 42.7 44.8 46.8 48.8 50.9 52.9 54.9 56.9
256
39.3 43.4 47.5 51.5 55.6 59.5 63.5 67.4 71.3 75.2 79
12
127.9
205.5
83
127.5
67.1
98.2
58.9
82.8
Rev. 0 | Page 4 of 68
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