Datasheet

AD7194 Data Sheet
Rev. A | Page 16 of 56
SINC
3
CHOP DISABLED
Table 9. RMS Noise (nV) vs. Gain and Output Data Rate
Filter Word (Decimal)
Output Data
Rate (Hz)
Settling
Time (ms)
Gain of
1
8
16
32
64
128
1023
4.7
639.4
380
58
35
20
13
11
640
7.5
400
450
73
41
25
17
14
480 10 300 490 90 47 28 19 16
96 50 60 1100 160 92 54 40 36
80 60 50 1200 170 99 59 43 39
32 150 20 1900 280 160 91 72 63
16 300 10 2700 380 210 130 97 87
5 960 3.13 6400 870 490 280 200 170
2 2400 1.25 115,000 14,000 7000 3600 1800 950
1 4800 0.625 860,000 110,000 54,000 28,000 14,000 7000
Table 10. Peak-to-Peak Noise (nV) vs. Gain and Output Data Rate
Filter Word (Decimal)
Output Data
Rate (Hz)
Settling
Time (ms)
Gain of
1 8 16 32 64 128
1023 4.7 639.4 2300 350 220 130 84 70
640 7.5 400 2700 450 270 160 110 88
480 10 300 3100 520 310 180 120 100
96 50 60 7200 990 560 370 260 230
80 60 50 7800 1100 630 390 270 250
32 150 20 13,000 1800 1000 580 480 400
16 300 10 19,000 2500 1400 860 640 560
5 960 3.13 410,000 5700 3200 1800 1300 1100
2
2400
1.25
730,000
93,000
47,000
24,000
12,000
6100
1
4800
0.625
5,700,000
730,000
360,000
180,000
93,000
45,000
Table 11. Effective Resolution (Peak-to-Peak Resolution) vs. Gain and Output Data Rate
Filter Word (Decimal)
Output Data
Rate (Hz)
Settling
Time (ms)
Gain of
1
1 8 16 32 64 128
1023 4.7 639.4 24 (22.1) 24 (21.8) 24 (21.4) 23.9 (21.2) 23.5 (20.8) 22.8 (20.1)
640 7.5 400 24 (21.8) 24 (21.4) 23.9 (21.1) 23.6 (20.9) 23.1 (20.4) 22.4 (19.8)
480 10 300 24 (21.6) 23.8 (21.2) 23.7 (20.9) 23.4 (20.7) 23 (20.3) 22.2 (19.6)
96 50 60 23.1 (20.4) 22.9 (20.3) 22.7 (20.1) 22.5 (19.7) 21.9 (19.2) 21 (18.4)
80 60 50 23 (20.3) 22.8 (20.1) 22.6 (19.9) 22.3 (19.6) 21.8 (19.1) 20.9 (18.3)
32 150 20 22.3 (19.6) 22.1 (19.4) 21.9 (19.3) 21.7 (19) 21 (18.3) 20.2 (17.6)
16 300 10 21.8 (19) 21.6 (18.9) 21.56 (18.8) 21.2 (18.5) 20.6 (17.9) 19.8 (17.1)
5
960
3.13
20.6 (17.9)
20.5 (17.7)
20.3 (17.6)
20.1 (17.4)
19.6 (16.9)
18.8 (16.1)
2 2400 1.25 16.5 (13.7) 16.4 (13.7) 16.4 (13.7) 16.4 (13.7) 16.4 (13.7) 16.4 (13.6)
1 4800 0.625 13.5 (10.8) 13.5 (10.7) 13.5 (10.7) 13.5 (10.7) 13.5 (10.7) 13.5 (10.7)
1
The output peak-to-peak (p-p) resolution is listed in parentheses.