Fast Settling - Analog Devices AD7194 Manual

8-channel, 4.8 khz, ultralow noise, 24-bit sigma-delta adc with pga
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FAST SETTLING

Table 12. RMS Noise (nV) vs. Gain and Output Data Rate
Filter Word
(Decimal)
Average
96
16
30
16
6
16
5
16
2
16
1
16
Table 13. Peak-to-Peak Noise (nV) vs. Gain and Output Data Rate
Filter Word
(Decimal)
Average
96
16
30
16
6
16
5
16
2
16
1
16
Table 14. Effective Resolution (Peak-to-Peak Resolution) vs. Gain and Output Data Rate
Filter Word
(Decimal)
Average
96
16
30
16
6
16
5
16
2
16
1
16
1
The output peak-to-peak (p-p) resolution is listed in parentheses.
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Output Data
Settling
Rate (Hz)
Time (ms)
1
2.63
380
410
8.4
118.75
700
42.10
23.75
1500
50.53
19.79
1600
126.32
7.92
2700
252.63
3.96
3700
Output Data
Settling
Rate (Hz)
Time (ms)
1
2.63
380
2500
8.4
118.75
4200
42.10
23.75
10,000
50.53
19.79
11,000
126.32
7.92
16,000
252.63
3.96
23,000
Output Data
Settling
Rate (Hz)
Time (ms)
1
2.63
380
24 (21.9)
8.4
118.75
23.8 (21.2)
42.10
23.75
22.7 (19.9)
50.53
19.79
22.6 (19.8)
126.32
7.92
21.8 (19.3)
252.63
3.96
21.4 (18.7)
8
16
87
52
140
71
270
150
280
160
380
210
540
300
8
16
450
260
900
470
1800
950
1900
1000
2800
1500
4500
2000
8
16
23.8 (21.4)
23.5 (21.2)
23.1 (20.4)
23.1 (20.3)
22.1 (19.4)
22 (19.3)
22.1 (19.3)
21.9 (19.3)
21.6 (18.8)
21.5 (18.7)
21.1 (18.1)
21 (18.3)
Rev. 0 | Page 17 of 56
Gain of
32
64
33
15
43
30
82
56
88
61
130
94
190
140
Gain of
32
64
180
100
280
190
540
360
580
390
850
580
1200
850
1
Gain of
32
64
23.2 (20.7)
23.3 (20.6)
22.8 (20.1)
22.3 (19.6)
21.9 (19.1)
21.4 (18.7)
21.8 (19)
21.3 (18.6)
21.2 (18.5)
20.7 (18)
20.6 (18)
20.1 (17.5)
AD7194
128
12
21
47
52
85
120
128
70
130
300
330
510
740
128
22.6 (20.1)
21.8 (19.2)
20.7 (18)
20.5 (17.9)
19.8 (17.2)
19.3 (16.7)

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