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ADFS7124-8BBCPZ датащи(PDF) 27 Page - Analog Devices

номер детали ADFS7124-8BBCPZ
подробное описание детали  8-Channel, Low Noise, Low Power, 24-Bit, Sigma-Delta ADC with PGA and Reference
PDF  93 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

ADFS7124-8BBCPZ датащи(HTML) 27 Page - Analog Devices

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Data Sheet
ADFS7124-8
RMS NOISE AND RESOLUTION
analog.com
Rev. 0 | 27 of 93
Table 7 through Table 36 show the RMS noise, peak-to-peak noise,
effective resolution, and noise-free (peak-to-peak) resolution of the
ADFS7124-8 for various output data rates, gain settings, and filters.
The numbers given are for the bipolar input range with an external
2.5 V reference. These numbers are typical and are generated with
a differential input voltage of 0 V when the ADC is continuously
converting on a single channel. It is important to note that the
effective resolution is calculated using the RMS noise, whereas the
peak-to-peak resolution (shown in parentheses) is calculated based
on peak-to-peak noise (shown in parentheses). The peak-to-peak
resolution represents the resolution for which there is no code
flicker.
Effective Resolution = Log2 (Input Range/RMS Noise)
Peak-to-Peak Resolution = Log2 (Input Range/Peak-to-Peak Noise)
FULL POWER MODE
Sinc4
Table 7. RMS Noise (Peak-to-Peak Noise) vs. Gain and Output Data Rate (µV), Full 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
9.4
2.34
2.16
0.24 (1.5)
0.15 (0.89)
0.091 (0.6)
0.071 (0.41)
0.045 (0.26)
0.031 (0.17)
0.025 (0.15)
0.023 (0.14)
1920
10
2.5
2.3
0.23 (1.5)
0.14 (0.89)
0.094 (0.6)
0.076 (0.42)
0.048 (0.27)
0.03 (0.19)
0.025 (0.16)
0.025 (0.15)
960
20
5
4.6
0.31 (2.1)
0.22 (1.3)
0.13 (0.89)
0.1 (0.6)
0.069 (0.41)
0.044 (0.26)
0.035 (0.22)
0.034 (0.22)
480
40
10
9.2
0.42 (3)
0.3 (2.1)
0.19 (1.4)
0.14 (0.97)
0.09 (0.63)
0.063 (0.39)
0.053 (0.34)
0.043 (0.27)
384
50
12.5
11.5
0.48 (3.2)
0.33 (2.1)
0.2 (1.3)
0.16 (1.1)
0.1 (0.75)
0.068 (0.43)
0.059 (0.42)
0.048 (0.28)
320
60
15
13.8
0.51 (3.3)
0.35 (2.4)
0.23 (1.3)
0.17 (1.2)
0.11 (0.78)
0.077 (0.5)
0.064 (0.41)
0.056 (0.35)
240
80
20
18.4
0.6 (4.8)
0.41 (3)
0.28 (1.8)
0.19 (1.3)
0.13 (0.86)
0.09 (0.54)
0.072 (0.48)
0.063 (0.45)
120
160
40
36.8
0.86 (6.9)
0.55 (4.1)
0.37 (2.5)
0.29 (2)
0.2 (1.2)
0.13 (0.84)
0.11 (0.7)
0.098 (0.6)
60
320
80
73.6
1.2 (8.9)
0.76 (6.1)
0.53 (4.1)
0.4 (2.7)
0.26 (1.8)
0.18 (1.2)
0.15 (0.95)
0.14 (0.86)
30
640
160
147.2
1.7 (13)
1.1 (8.8)
0.74 (5.7)
0.57 (4.1)
0.38 (2.9)
0.26 (2)
0.22 (1.6)
0.19 (1.4)
15
1280
320
294.4
2.4 (19)
1.6 (13)
1.1 (8.4)
0.82 (6)
0.55 (4)
0.38 (2.5)
0.3 (2.3)
0.26 (1.8)
8
2400
600
552
3.3 (25)
2.3 (16)
1.5 (12)
1.2 (8)
0.76 (6)
0.53 (4)
0.43 (3.2)
0.37 (2.7)
4
4800
1200
1104
4.9 (38)
3.4 (25)
2.4 (20)
2 (13)
1.3 (9.1)
0.83 (6.4)
0.68 (4.8)
0.58 (4.3)
2
9600
2400
2208
8.8 (76)
6.8 (61)
4.9 (34)
4.3 (27)
2.6 (21)
1.7 (13)
1.3 (12)
1.2 (9.4)
1
19,200
4800
4416
72 (500)
38 (270)
21 (150)
13 (95)
7.5 (57)
4.4 (33)
3.3 (26)
2.8 (23)
Table 8. Effective Resolution (Peak-to-Peak Resolution) vs. Gain and Output Data Rate (Bits), Full 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
9.4
2.34
24 (21.7)
24 (21.4)
23.7 (21)
23.1 (20.5)
22.7 (20.2)
22.3 (19.8)
21.6 (19)
20.7 (18.1)
1920
10
2.5
24 (21.7)
24 (21.4)
23.7 (21)
23 (20.5)
22.6 (20.1)
22.3 (19.7)
21.6 (19)
20.7 (18.1)
960
20
5
23.9 (21.2)
23.5 (20.8)
23.2 (20.4)
22.5 (20)
22.1 (19.5)
21.8 (19.2)
21.1 (18.4)
20.1 (17.4)
480
40
10
23.5 (20.7)
23 (20.3)
22.6 (19.8)
22.1 (19.3)
21.7 (18.9)
21.2 (18.6)
20.5 (17.8)
19.8 (17.1)
384
50
12.5
23.3 (20.5)
22.9 (20.2)
22.5 (19.6)
21.9 (19.1)
21.5 (18.7)
21.1 (18.5)
20.4 (17.7)
19.6 (17)
320
60
15
23.2 (20.3)
22.8 (20)
22.4 (19.5)
21.8 (19)
21.4 (18.6)
21 (18.3)
20.2 (17.6)
19.4 (16.6)
240
80
20
23 (20)
22.6 (19.7)
22.1 (19.3)
21.6 (18.9)
21.2 (18.5)
20.7 (18.1)
20 (17.3)
19.2 (16.4)
120
160
40
22.5 (19.5)
22.1 (19.2)
21.7 (18.9)
21 (18.3)
20.6 (18)
20.1 (17.5)
19.5 (16.9)
18.6 (16)
60
320
80
22 (19.1)
21.6 (18.6)
21.2 (18.2)
20.6 (17.8)
20.2 (17.4)
19.7 (17)
19 (16.3)
18.1 (15.5)
30
640
160
21.5 (18.5)
21.1 (18.1)
20.7 (17.7)
20.1 (17.2)
19.7 (16.8)
19.2 (16.3)
18.5 (15.6)
17.6 (14.8)
15
1280
320
21 (18)
20.5 (17.6)
20.2 (17.2)
19.5 (16.7)
19.1 (16.3)
18.7 (15.9)
18 (15.1)
17.2 (14.4)
8
2400
600
20.5 (17.5)
20.1 (17.2)
19.7 (16.7)
19 (16.2)
18.6 (15.7)
18.2 (15.3)
17.5 (14.6)
16.7 (13.8)
4
4800
1200
20 (17)
19.5 (16.5)
19 (16)
18.3 (15.6)
17.9 (15.1)
17.5 (14.6)
16.8 (14)
16 (13.2)
2
9600
2400
19.1 (16)
18.5 (15.3)
18 (15.1)
17.2 (14.5)
16.9 (13.9)
16.5 (13.5)
15.9 (12.7)
15 (12)
1
19,200
4800
16.1 (13.3)
16 (13.2)
15.9 (13)
15.5 (12.7)
15.4 (12.4)
15.1 (12.2)
14.6 (11.5)
13.8 (10.8)



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