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ADFS7124-8BBCPZ データシート(PDF) 34 Page - Analog Devices

部品番号 ADFS7124-8BBCPZ
部品情報  8-Channel, Low Noise, Low Power, 24-Bit, Sigma-Delta ADC with PGA and Reference
PDF  93 Pages
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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

ADFS7124-8BBCPZ データシート(HTML) 34 Page - Analog Devices

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Data Sheet
ADFS7124-8
RMS NOISE AND RESOLUTION
analog.com
Rev. 0 | 34 of 93
Sinc3
Table 29. RMS Noise (Peak-to-Peak Noise) vs. Gain and Output Data Rate (µV), Low Power Mode
Filter
Word
(Dec.)
Output
Data
Rate
(SPS)
Output
Data Rate
(Zero
Latency
Mode)
(SPS)
f3dB
(Hz)
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Gain = 16
Gain = 32
Gain = 64
Gain = 128
2047
1.17
0.39
0.32
0.26 (1.5)
0.17 (0.9)
0.099 (0.6)
0.072 (0.36)
0.055 (0.27)
0.039 (0.21)
0.032 (0.16)
0.026 (0.13)
480
5
1.67
1.36
0.51 (3.1)
0.31 (1.9)
0.2 (1.3)
0.15 (0.86)
0.11 (0.65)
0.078 (0.45)
0.063 (0.37)
0.05 (0.28)
240
10
3.33
2.72
0.75 (4.5)
0.45 (2.8)
0.29 (2)
0.21 (1.3)
0.16 (0.9)
0.11 (0.65)
0.085 (0.51)
0.071 (0.39)
160
15
5
4.08
0.88 (5.5)
0.55 (3.3)
0.3 (2.4)
0.26 (1.6)
0.19 (1.2)
0.14 (0.79)
0.1 (0.62)
0.089 (0.53)
80
30
10
8.16
1.3 (7.8)
0.77 (4.9)
0.47 (3.3)
0.36 (2.2)
0.27 (1.7)
0.19 (1.2)
0.15 (0.94)
0.12 (0.72)
48
50
16.67
13.6
1.7 (9.9)
1 (6.4)
0.63 (4.6)
0.47 (3.1)
0.36 (2.2)
0.26 (1.7)
0.2 ( 1.3)
0.16 (1)
40
60
20
16.32
1.8 (12)
1.1 (7)
0.71 (5)
0.52 (3.4)
0.39 (2.5)
0.27 (1.8)
0.21 (1.4)
0.18 (1.3)
20
120
40
32.64
2.5 (17)
1.6 (10)
0.9 (6.1)7
0.73 (5)
0.55 (3.7)
0.41 (2.5)
0.3 (1.9)
0.26 (1.6)
10
240
80
65.28
3.5 (25)
2.4 (16)
1.5 (9.9)
1.1 (7.6)
0.8 (5.3)
0.56 (3.5)
0.45 (2.8)
0.37 (2.3)
5
480
160
130.6
6.8 (48)
4.3 (32)
2.6 (19)
2 (15)
1.3 (9)
0.9 (6.5)
0.7 (4.5)
0.55 (3.3)
3
800
266.67
217.6
25 (180)
13 (98)
7.4 (53)
4.5 (34)
2.7 (18)
1.6 (11)
1.1 (7.7)
0.91 (6)
2
1200
400
326.4
110 (740)
55 (390)
28 (180)
15 (100)
7.6 (57)
4 (32)
2.4 (16)
1.6 (12)
1
2400
800
652.8
870 (5600)
430 (2900)
220 (1400)
110 (670)
56 (370)
28 (180)
14 (100)
7.6 (52)
Table 30. Effective Resolution (Peak-to-Peak Resolution) vs. Gain and Output Data Rate, Low Power Mode
Filter
Word
(Dec.)
Output Data
Rate (SPS)
Output Data
Rate (Zero
Latency
Mode) (SPS)
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Gain = 16
Gain = 32
Gain = 64
Gain = 128
2047
1.17
0.39
24 (21.7)
23.8 (21.4)
23.6 (21)
23 (20.7)
22.4 (20.1)
21.9 (19.5)
21.2 (18.9)
20.5 (18.2)
480
5
1.67
23.2 (20.6)
22.9 (20.3)
22.6 (19.9)
22 (19.5)
21.4 (18.9)
20.9 (18.4)
20.2 (17.7)
19.6 (17.1)
240
10
3.33
22.7 (20.1)
22.4 (19.8)
22.1 (19.3)
21.5 (18.9)
20.9 (18.4)
20.4 (17.9)
19.8 (17.2)
19.1 (16.6)
160
15
5
22.4 (19.8)
22.1 (19.5)
21.8 (19)
21.2 (18.6)
20.6 (18)
20.1 (17.6)
19.5 (16.9)
18.8 (16.2)
80
30
10
21.9 (19.3)
21.6 (19)
21.3 (18.5)
20.7 (18.1)
20.1 (17.5)
19.6 (17)
19 (16.3)
18.3 (15.7)
48
50
16.67
21.5 (18.9)
21.2 (18.6)
20.9 (18.1)
20.3 (17.6)
19.7 (17.1)
19.2 (16.5)
18.6 (15.9)
17.9 (15.2)
40
60
20
21.4 (18.7)
21.1 (18.4)
20.8 (17.9)
20.2 (17.5)
19.6 (16.9)
19.1 (16.4)
18.5 (15.8)
17.7 (15.1)
20
120
40
20.9 (18.2)
20.6 (17.9)
20.3 (17.4)
19.7 (16.9)
19.1 (16.4)
18.6 (15.9)
18 (15.3)
17.2 (14.6)
10
120
80
20.4 (17.6)
20 (17.2)
19.7 (16.9)
19.1 (16.3)
18.6 (15.9)
18.1 (15.4)
17.4 (14.8)
16.7 (14.1)
5
480
160
19.5 (16.7)
19.2 (16.3)
18.8 (16)
18.2 (15.4)
17.9 (15.1)
17.4 (14.6)
16.8 (14.1)
16.1 (13.5)
3
800
266.67
17.6 (14.8)
17.5 (14.6)
17.4 (14.5)
17.1 (14.2)
16.8 (14.1)
16.6 (13.8)
16.1 (13.3)
15.4 (12.7)
2
1200
400
15.5 (12.7)
15.5 (12.7)
15.4 (12.7)
15.4 (12.6)
15.3 (12.4)
15.2 (12.3)
15 (12.2)
14.5 (11.6)
1
2400
800
12.5 (9.8)
12.5 (9.8)
12.5 (9.8)
12.5 (9.8
12.5 (9.7)
12.5 (9.7)
12.5 (9.6)
12.3 (9.6)
Post Filters
Table 31. RMS Noise (Peak-to-Peak Noise) vs. Gain and Output Data Rate (µV), Low Power Mode
Output Data Rate (SPS)
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Gain = 16
Gain = 32
Gain = 64
Gain = 128
16.67
1.7 (12)
0.96 (5.8)
0.65 (4)
0.45 (2.6)
0.34 (1.9)
0.25 (1.5)
0.2 (1.2)
0.16 (0.92)
20
1.7 (11)
1.1 (6.4)
0.65 (4.2)
0.46 (2.6)
0.36 (1.9)
0.26 (1.5)
0.21 (1.2)
0.17 (0.93)
25
1.8 (11)
1.1 (6.7)
0.68 (4.2)
0.52 (2.7)
0.37 (2)
0.26 (1.6)
0.22 (1.2)
0.17 (1.1)
27.27
1.9 (11)
1.1 (7.3)
0.69 (4.4)
0.54 (2.9)
0.4 (2.1)
0.27 (1.8)
0.23 (1.4)
0.18 (1.3)



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