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AD7193 Datasheet(PDF) 19 Page - Analog Devices

Part # AD7193
Description  24-Bit Sigma-Delta ADC with PGA
PDF  57 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7193 Datasheet(HTML) 19 Page - Analog Devices

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AD7193
Data Sheet
Rev. E | Page 18 of 56
RMS NOISE AND RESOLUTION
The following tables show the rms noise, peak-to-peak noise,
effective resolution, and noise free (peak-to-peak) resolution of
the AD7193 for various output data rates and gain settings with
chop disabled for the sinc4 and sinc3 filters and for fast settling
mode. The numbers given are for the bipolar input range with
an external 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 is calculated based
on peak-to-peak noise. The peak-to-peak resolution represents
the resolution for which there is no code flicker. With chop
enabled, the resolution improves by 0.5 bits.
SINC4 CHOP DISABLED
Table 7. 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
852.5
340
53
34
18
12
11
640
7.5
533
410
67
40
24
14
13
480
10
400
460
76
45
28
16
15
96
50
80
950
150
80
50
37
31
80
60
66.7
1000
160
90
54
40
35
32
150
26.7
1600
250
140
83
63
55
16
300
13.3
2300
340
190
120
90
79
5
960
4.17
4200
610
350
210
160
140
2
2400
1.67
7100
1000
570
350
260
230
1
4800
0.83
26,000
3400
1700
910
530
380
Table 8. 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
852.5
2200
340
190
110
70
65
640
7.5
533
2700
410
230
130
90
85
480
10
400
3000
450
260
150
100
95
96
50
80
6000
890
500
320
230
200
80
60
66.7
6600
1000
560
350
250
220
32
150
26.7
10,000
1500
920
540
400
370
16
300
13.3
14,000
2200
1300
800
600
530
5
960
4.17
28,000
4100
2400
1400
1000
900
2
2400
1.67
49,000
7000
3800
2400
1800
1700
1
4800
0.83
175,000
23,000
12,000
6100
3500
2600
Table 9. Effective Resolution (Peak-to-Peak Resolution) vs. Gain and Output Data Rate
Filter Word
(Decimal)
Output Data
Rate (Hz)
Settling
Time (ms)
Gain of1
1
8
16
32
64
128
1023
4.7
852.5
24 (22.1)
24 (21.8)
24 (21.6)
24 (21.4)
23.6 (21.1)
22.8 (20.2)
640
7.5
533
24 (21.8)
24 (21.5)
23.9 (21.4)
23.6 (21.2)
23.4 (20.7)
22.5 (19.8)
480
10
400
24 (21.7)
24 (21.4)
23.7 (21.2)
23.4 (21)
23.2 (20.6)
22.3 (19.6)
96
50
80
23.3 (20.7)
23 (20.4)
22.9 (20.3)
22.6 (19.9)
22 (19.4)
21.3 (18.6)
80
60
66.7
23.3 (20.5)
22.9 (20.3)
22.8 (20.1)
22.5 (19.8)
21.9 (19.3)
21.1 (18.4)
32
150
26.7
22.6 (19.9)
22.3 (19.7)
22.1 (19.4)
21.8 (19.1)
21.2 (18.6)
20.4 (17.7)
16
300
13.3
22.1 (19.4)
21.8 (19.1)
21.6 (18.9)
21.3 (18.6)
20.7 (18)
19.9 (17.2)
5
960
4.17
21.2 (18.4)
21 (18.2)
20.8 (18)
20.5 (17.8)
19.9 (17.3)
19.1 (16.4)
2
2400
1.67
20.4 (17.6)
20.3 (17.4)
20.1 (17.3)
19.8 (17)
19.2 (16.4)
18.4 (15.5)
1
4800
0.83
18.6 (15.8)
18.5 (15.7)
18.5 (15.7)
18.4 (15.6)
18.2 (15.4)
17.6 (14.9)
1
The output peak-to-peak (p-p) resolution is listed in parentheses.



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