參數(shù)資料
型號(hào): EVAL-AD7194EBZ
廠(chǎng)商: Analog Devices Inc
文件頁(yè)數(shù): 8/57頁(yè)
文件大小: 0K
描述: EVAL BOARD FOR AD7194
設(shè)計(jì)資源: EVAL-AD7zzzEBZ Schematic
AD7194 Gerber Files
標(biāo)準(zhǔn)包裝: 1
ADC 的數(shù)量: 1
位數(shù): 24
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
工作溫度: -40°C ~ 105°C
已用 IC / 零件: AD7194
已供物品: 板,線(xiàn)纜
Data Sheet
AD7194
Rev. A | Page 15 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 AD7194 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 6. 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
370
57
35
18
13
11
640
7.5
533
440
73
41
24
17
13
480
10
400
470
83
45
28
18
16
96
50
80
1100
150
85
52
38
34
80
60
66.7
1200
170
94
56
42
38
32
150
26.7
1800
260
150
86
65
59
16
300
13.3
2500
360
210
130
95
83
5
960
4.17
4500
640
370
230
170
150
2
2400
1.67
7500
1100
600
380
280
240
1
4800
0.83
26,000
3400
1800
940
550
390
Table 7. 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
200
120
84
70
640
7.5
533
2700
430
260
150
100
85
480
10
400
3000
480
300
170
120
100
96
50
80
6600
950
540
350
250
210
80
60
66.7
7200
1000
610
370
270
220
32
150
26.7
11,000
1600
970
580
430
370
16
300
13.3
17,000
2400
1400
840
620
530
5
960
4.17
35,000
4800
2500
1500
1100
1000
2
2400
1.67
56,000
7500
4200
2900
1800
1700
1
4800
0.83
175,000
23,000
12,000
7100
3600
2600
Table 8. 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 (21.3)
23.5 (20.8)
22.8 (20.1)
640
7.5
533
24 (21.8)
24 (21.5)
23.9 (21.2)
23.6 (21)
23.1 (20.6)
22.5 (19.8)
480
10
400
24 (21.7)
24 (21.3)
23.7 (21)
23.4 (20.8)
23 (20.3)
22.2 (19.6)
96
50
80
23.1 (20.5)
23 (20.3)
22.8 (20.1)
22.5 (19.8)
22 (19.3)
21.1 (18.5)
80
60
66.7
23 (20.4)
22.9 (20.3)
22.7 (20)
22.4 (19.7)
21.8 (19.1)
21 (18.4)
32
150
26.7
22.4 (19.8)
22.3 (19.6)
22 (19.3)
21.8 (19)
21.2 (18.5)
20.3 (17.7)
16
300
13.3
21.9 (19.2)
21.8 (19)
21.5 (18.8)
21.2 (18.5)
20.7 (17.9)
19.8 (17.2)
5
960
4.17
21.1 (18.4)
21 (18)
20.7 (17.9)
20.4 (17.7)
19.8 (17.1)
19 (16.3)
2
2400
1.67
20.4 (17.6)
20.3 (17.3)
20 (17.2)
19.6 (16.7)
19.1 (16.4)
18.3 (15.5)
1
4800
0.83
18.6 (15.8)
18.5 (15.7)
18.4 (15.7)
18.3 (15.4)
18.1 (15.4)
17.6 (14.9)
1
The output peak-to-peak (p-p) resolution is listed in parentheses.
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