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ADFS7124-4BBCPZ Datasheet(PDF) 34 Page - Analog Devices

Part # ADFS7124-4BBCPZ
Description  4-Channel, Low Noise, Low Power, 24-Bit, Sigma-Delta ADC with PGA and Reference
PDF  93 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADFS7124-4BBCPZ Datasheet(HTML) 34 Page - Analog Devices

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Data Sheet
ADFS7124-4
RMS NOISE AND RESOLUTION
analog.com
Rev. 0 | 34 of 93
Table 30. Effective Resolution (Peak-to-Peak Resolution) vs. Gain and Output Data Rate, Low Power Mode (Continued)
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
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)
Table 32. Effective Resolution (Peak-to-Peak Resolution) vs. Gain and Output Data Rate (Bits), 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
21.5 (18.8)
21.3 (18.7)
20.9 (18.2)
21.4 (17.9)
19.8 (17.3)
19.3 (16.7)
18.6 (16.1)
17.9 (15.4)
20
21.5 (18.8)
21.2 (18.6)
20.9 (18.2)
20.4 (17.9)
19.7 (17.3)
19.2 (16.7)
18.6 (16.1)
17.8 (15.4)
25
21.4 (18.8)
21.2 (18.5)
20.8 (18.2)
20.2 (17.8)
19.7 (17.3)
19.2 (16.6)
18.5 (15.9)
17.8 (15.1)
27.27
21.3 (18.7)
21.1 (18.4)
20.8 (18.1)
20.2 (17.7)
19.6 (17.2)
19.1 (16.4)
18.4 (15.8)
17.7 (14.9)
Fast Settling Filter (Sinc4 + Sinc1)
Table 33. RMS Noise (Peak-to-Peak Noise) vs. Gain and Output Data Rate (µV), Low Power Mode (Average by 8)
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
0.53 (3.4)
0.34 (2.2)
0.19 (1.2)
0.16 (0.97)
0.1 (0.61)
0.082 (0.48)
0.065 (0.38)
0.058 (0.37)
30
10
0.89 (5.4)
0.6 (3.6)
0.36 (2.2)
0.27 (1.8)
0.21 (1.2)
0.15 (0.93)
0.12 (0.65)
0.093 (0.59)
6
50
2.1 (12)
1.4 (8.3)
0.82 (5.6)
0.64 (3.9)
0.43 (2.7)
0.33 (2.1)
0.25 (1.6)
0.21 (1.4)
5
60
2.2 (13)
1.4 (9.7)
0.93 (6.5)
0.71 (4.2)
0.5 (3.1)
0.35 (2.4)
0.28 (1.7)
0.23 (1.5)
2
150
3.7 (25)
2.5 (18)
1.5 (10)
1.3 (7.5)
0.86 (5.6)
0.59 (3.5)
0.47 (3.2)
0.39 (2.4)
1
300
8.4 (52)
5.4 (34)
3.3 (21)
2.6 (16)
1.6 (9.8)
0.97 (6.1)
0.75 (5.4)
0.63 (4.7)
Table 34. Effective Resolution (Peak-to-Peak Resolution) vs. Gain and Output Data Rate (Bits), Low Power Mode (Average by 8)
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
23.2 (20.5)
22.8 (20.1)
22.7 (20)
21.9 (19.3)
21.5 (19)
20.9 (18.3)
20.2 (17.6)
19.4 (16.7)
30
10
22.4 (19.8)
22 (19.4)
21.7 (19.1)
21.1 (18.4)
20.5 (18)
20 (17.4)
19.4 (16.9)
18.7 (16)
6
50
21.2 (18.6)
20.8 (18.1)
20.5 (17.8)
19.9 (17.3)
19.5 (16.8)
18.9 (16.2)
18.3 (15.6)
17.5 (14.8)
5
60
21.1 (18.5)
20.7 (18)
20.4 (17.6)
19.8 (17.2)
19.3 (16.6)
18.8 (16)
18.1 (15.5)
17.4 (14.7)
2
150
20.4 (17.6)
19.9 (17.1)
19.6 (16.9)
18.9 (16.3)
18.5 (15.8)
18 (15.4)
17.3 (14.6)
16.6 (14)
1
300
19.2 (16.6)
18.8 (16.2)
18.5 (15.9)
17.9 (15.2)
17.6 (15)
17.3 (14.7)
16.7 (13.8)
15.9 (13)
Fast Settling Filter (Sinc3 + Sinc1)
Table 35. RMS Noise (Peak-to-Peak Noise) vs. Gain and Output Data Rate (µV), Low Power Mode (Average by 8)
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
0.53 (3.6)
0.33 (2.1)
0.21 (1.4)
0.15 (0.93)
0.11 (0.6)
0.073 (0.44)
0.064 (0.39)
0.051 (0.29)



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