Datasheet

AD7195
Rev. 0 | Page 16 of 44
SINC
3
CHOP ENABLED
Table 15. RMS Noise (nV) vs. Gain and Output Data Rate
Filter Word
(Decimal)
Output Data
Rate (Hz)
Settling
Time (ms) Gain of 1 Gain of 8 Gain of 16 Gain of 32 Gain of 64 Gain of 128
1023 1.56 1282 205 88 37 17 7.5 6.5
640 2.5 800 332 95 40 21 9 8
480 3.33 600 431 103 41 23 11.5 9
96 16.6 120 778 113 61 35 25 21
80 20 100 849 120 67 39 28 23
32 50 40 1061 163 92 57 41 35
16 100 20 1379 218 124 78 59 52
5 320 6.25 2828 417 233 141 106 94
2 800 2.5 40,022 4950 2475 1273 636 346
1 1600 1.25 312,540 38,890 19,800 9900 4950 2440
Table 16. Peak-to-Peak Noise (nV) vs. Gain and Output Data Rate
Filter Word
(Decimal)
Output Data
Rate (Hz)
Settling
Time (ms)
Gain of 1 Gain of 8 Gain of 16 Gain of 32 Gain of 64 Gain of 128
1023 1.56 1282 1202 530 184 92 46 40
640 2.5 800 1697 566 240 120 59 42
480 3.33 600 2121 636 255 141 71 49
96 16.6 120 4667 686 318 198 141 127
80 20 100 4808 707 424 205 170 141
32 50 40 6293 990 474 382 255 219
16 100 20 9192 1414 707 474 332 354
5 320 6.25 17,680 2404 1556 849 601 566
2 800 2.5 219,200 29,000 15,560 8485 3960 2192
1 1600 1.25 1,838,500 212,200 120,200 55,870 29,000 16,970
Table 17. 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
Gain of 8
1
Gain of 16
1
Gain of 32
1
Gain of 64
1
Gain of 128
1
1023 1.56 1282 24 (23) 24 (21.5) 24 (21.5) 24 (21.5) 24 (21.5) 23.5 (20.9)
640 2.5 800 24 (22.5) 23.8 (21.3) 23.8 (21.3) 23.8 (21.3) 23.8 (21.3) 23.2 (20.8)
480 3.33 600 24 (22.5) 23.7 (21) 23.7 (21) 23.7 (21) 23.7 (21) 23.1 (20.6)
96 16.6 120 23.6 (21) 23.4 (20.8) 23.3 (20.8) 23.1 (20.5) 22.6 (20.1) 21.9 (19.2)
80 20 100 23.5 (21) 23.3 (20.6) 23.1 (20.5) 22.9 (20.5) 22.4 (19.8) 21.7 (19.1)
32 320 40 23.2 (20.5) 22.9 (20.3) 22.7 (20.2) 22.4 (19.8) 21.9 (19.2) 21.1 (18.4)
16 100 20 22.8 (20) 22.5 (19.8) 22.3 (19.8) 21.9 (19.3) 21.3 (18.8) 20.5 (17.8)
5 320 6.25 21.8 (19) 21.5 (19) 21.4 (18.6) 21.1 (18.5) 20.5 (18) 19.7 (17.1)
2 800 2.5 17.9 (15.4) 17.9 (15.4) 17.9 (15.3) 17.9 (15.2) 17.9 (15.2) 17.8 (15.1)
1 1600 1.25 15 (12.4) 15 (12.4) 14.9 (12.3) 14.9 (12.3) 14.9 (12.3) 14.9 (12.2)
1
The output peak-to-peak (p-p) resolution is listed in parentheses.
When ac excitation is enabled, the rms noise and resolution is the same as for chop enabled mode.