CBULK C
參數(shù)資料
型號(hào): AD7142ACPZ-500RL7
廠商: Analog Devices Inc
文件頁(yè)數(shù): 56/73頁(yè)
文件大小: 0K
描述: IC CAP-TO-DGTL CONV PROG 32LFCSP
標(biāo)準(zhǔn)包裝: 1
類(lèi)型: 電容數(shù)字轉(zhuǎn)換器
分辨率(位): 16 b
采樣率(每秒): 250k
數(shù)據(jù)接口: 串行
電壓電源: 單電源
電源電壓: 2.6 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤(pán),CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-VQ(5x5)
包裝: 標(biāo)準(zhǔn)包裝
其它名稱(chēng): AD7142ACPZ-500RL7DKR
AD7142
Rev. A | Page 5 of 72
PLASTIC OVERLAY
SENSOR BOARD
CBULK
CIN
CAPACITIVE SENSOR
05
70
2-
05
4
Figure 2.
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 Mode
Delay
Decimation
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 Mode
Delay
Decimation
Rate
1
2
3
4
5
6
7
8
9
10
11
12
200 ms
128
45.4
53.6
61.5
69.4
77.1
84.7
92.2
99.6
106.8
113.9
121
127.9
256
56.2
72
87.2
102
116.3
130.2
143.7
156.8
169.5
181.8
193.8
205.5
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
83
256
45
53.1
61.1
68.9
76.7
84.3
91.8
99.1
106.4
113.6
120.6
127.5
600 ms
128
37.5
40.3
43
45.8
48.5
51.2
53.9
56.5
59.2
61.8
64.5
67.1
256
41.2
46.7
52.1
57.4
62.7
67.9
73.1
78.2
83.3
88.3
93.3
98.2
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
58.9
256
39.3
43.4
47.5
51.5
55.6
59.5
63.5
67.4
71.3
75.2
79
82.8
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