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ADFS7124-4BBCPZ データシート(PDF) 31 Page - Analog Devices

部品番号 ADFS7124-4BBCPZ
部品情報  4-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

ADFS7124-4BBCPZ データシート(HTML) 31 Page - Analog Devices

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Data Sheet
ADFS7124-4
RMS NOISE AND RESOLUTION
analog.com
Rev. 0 | 31 of 93
Post Filters
Table 21. RMS Noise (Peak-to-Peak Noise) vs. Gain and Output Data Rate (µV), Mid Power Mode
Output Data Rate (SPS)
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Gain = 16
Gain = 32
Gain = 64
Gain = 128
16.67
1.1 (6.3)
0.69 (4)
0.41 (2.5)
0.31 (2)
0.23 (1.4)
0.17 (0.96)
0.13 (0.79)
0.11 (0.61)
20
1.1 (6.9)
0.7 (4)
0.41 (2.5)
0.33 (2.1)
0.23 (1.5)
0.18 (0.96)
0.14 (0.81)
0.12 (0.67)
25
1.2 (8)
0.8 (4.6)
0.46 (2.8)
0.36 (2.3)
0.25 (1.5)
0.17 (1)
0.15 (0.9)
0.12 (0.74)
27.27
1.3 (9.2)
0.82 (4.8)
0.48 (2.8)
0.36 (2.3)
0.28 (1.6)
0.19 (1.1)
0.16 (1)
0.13 (0.79)
Table 22. Effective Resolution (Peak-to-Peak Resolution) vs. Gain and Output Data Rate (Bits), Mid Power Mode
Output Data Rate (SPS)
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Gain = 16
Gain = 32
Gain = 64
Gain = 128
16.67
22.1 (19.6)
21.8 (19.2)
21.5 (18.9)
20.9 (18.3)
20.4 (17.8)
19.8 (17.3)
19.2 (16.6)
18.4 (16)
20
22.1 (19.5)
21.8 (19.2)
21.5 (18.9)
20.9 (18.2)
20.4 (17.7)
19.8 (17.3)
19 (16.6)
18.3 (15.8)
25
22 (19.2)
21.6 (19.1)
21.4 (18.8)
20.7 (18.1)
20.3 (17.6)
19.7 (17.2)
18.9 (16.4)
18.2 (15.7)
27.27
21.9 (19)
21.5 (19)
21.3 (18.8)
20.7 (18.1)
21.1 (17.6)
19.7 (17.1)
18.9 (16.3)
18.2 (15.6)
Fast Settling Filter (Sinc4 + Sinc1)
Table 23. RMS Noise (Peak-to-Peak Noise) vs. Gain and Output Data Rate (µV), Mid Power Mode (Average by 16)
Filter Word
(Dec.)
Output Data Rate
(SPS)
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Gain = 16
Gain = 32
Gain = 64
Gain = 128
96
3.125
0.36 (2.4)
0.23 (1.5)
0.15 (0.82)
0.1 (0.71)
0.078 (0.44)
0.056 (0.35)
0.045 (0.26)
0.038 (0.21)
30
10
0.67 (4.2)
0.44 (2.7)
0.26 (1.6)
0.18 (1.1)
0.14 (0.8)
0.1 (0.54)
0.08 (0.48)
0.067 (0.41)
6
50
1.5 (9)
0.96 (6.1)
0.57 (3.7)
0.42 (2.6)
0.32 (1.9)
0.22 (1.5)
0.18 (1.1)
0.15 (0.95)
5
60
1.6 (9.3)
1 (7.7)
0.62 (4)
0.46 (3)
0.33 (2)
0.24 (1.6)
0.2 (1.3)
0.17 (1.2)
2
150
2.5 (15)
1.6 (11)
1 (7.2)
0.76 (4.9)
0.57 (3.7)
0.41 (2.7)
0.32 (2.4)
0.29 (1.9)
1
300
5.2 (21)
3.1 (19)
1.8 (11)
1.4 (9.8)
0.92 (6.2)
0.62 (4.2)
0.49 (3)
0.41 (3)
Table 24. Effective Resolution (Peak-to-Peak Resolution) vs. Gain and Output Data Rate (Bits), Mid Power Mode (Average by 16)
Filter Word
(Dec.)
Output Data Rate
(SPS)
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Gain = 16
Gain = 32
Gain = 64
Gain = 128
96
3.125
23.7 (21)
23.4 (20.7)
23 (20.5)
22.5 (19.8)
21.9 (19.4)
21.4 (18.8)
20.7 (18.2)
20 (17.5)
30
10
22.8 (20.2)
22.4 (19.8)
22.2 (19.5)
21.7 (19.1)
21 (18.6)
20.6 (18.1)
19.9 (17.3)
19.1 (16.5)
6
50
21.7 (19.1)
21.3 (18.6)
21.1 (18.4)
20.5 (17.9)
19.9 (17.3)
19.4 (16.7)
18.7 (16)
18 (15.2)
5
60
21.5 (19)
21.2 (18.4)
20.9 (18.2)
20.4 (17.8)
19.8 (17.2)
19.3 (16.6)
18.5 (15.9)
17.8 (15)
2
150
20.9 (18.3)
20.5 (17.8)
20.2 (17.4)
19.6 (17)
19.1 (16.4)
18.6 (15.8)
17.9 (15.2)
17.1 (14.3)
1
300
19.9 (17.3)
19.6 (17)
19.4 (16.8)
18.8 (16)
18.4 (15.6)
17.9 (15.2)
17.3 (14.7)
16.5 (13.7)
Fast Settling Filter (Sinc3 + Sinc1)
Table 25. RMS Noise (Peak-to-Peak Noise) vs. Gain and Output Data Rate (µV), Mid Power Mode (Average by 16)
Filter Word
(Dec.)
Output Data Rate
(SPS)
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Gain = 16
Gain = 32
Gain = 64
Gain = 128
96
3.125
0.39 (2.4)
0.25 (1.5)
0.16 (1)
0.11 (0.67)
0.08 (0.48)
0.058 (0.31)
0.047 (0.27)
0.039 (0.23)
30
10
0.71 (4.2)
0.43 (2.5)
0.27 (1.6)
0.19 (1.1)
0.15 (1)
0.098 (0.64)
0.083 (0.47)
0.068 (0.4)
6
50
1.5 (9.5)
0.93 (6)
0.59 (3.8)
0.43 (2.6)
0.32 (2.1)
0.22 (1.5)
0.18 (1.1)
0.15 (0.98)
5
60
1.6 (11)
1 (6.9)
0.66 (4.2)
0.46 (2.8)
0.35 (2.3)
0.24 (1.6)
0.2 (1.2)
0.17 (1.1)
2
150
6 (37)
3.2 (20)
1.8 (11)
1 (7.2)
0.63 (4.5)
0.43 (3)
0.33 (2.2)
0.27 (1.8)
1
300
44 (320)
23 (160)
12 (83)
5.7 (41)
3 (20)
1.6 (9.9)
0.84 (6.4)
0.56 (3.5)



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