The AD7192 has a choice of two filter types: sinc4
參數(shù)資料
型號(hào)： EVAL-AD7192EBZ
廠商： Analog Devices Inc
文件頁數(shù)： 7/41頁
文件大?。?/td> 0K
描述： BOARD EVAL FOR AD7192
標(biāo)準(zhǔn)包裝： 1
ADC 的數(shù)量： 1
位數(shù)： 24
采樣率（每秒）： 4.8k
數(shù)據(jù)接口： SPI?、QSPI?、MICROWIRE? 和 DSP
輸入范圍： ±VREF/增益
工作溫度： -40°C ~ 105°C
已用 IC / 零件： AD7192
已供物品： 板
AD7192
Rev. A | Page 14 of 40
RMS NOISE AND RESOLUTION
The AD7192 has a choice of two filter types: sinc4 and sinc3.
In addition, the AD7192 can be operated with chop enabled
or chop disabled.
The following tables show the rms noise of the AD7192 for some
of the output data rates and gain settings with chop disabled
and enabled for the sinc4 and sinc3 filters. The numbers given
are for the bipolar input range with the 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. The effective resolution is also shown, and
the output peak-to-peak (p-p) resolution, or noise-free resolution,
is listed in parentheses. It is important to note that the effective
resolution is calculated using the rms noise, whereas the p-p
resolution is calculated based on peak-to-peak noise. The p-p
resolution represents the resolution for which there is no code
flicker. These numbers are typical and are rounded to the
nearest LSB.
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
Gain of 8
Gain of 16
Gain of 32
Gain of 64
Gain of 128
1023
4.7
852.5
350
50
30
18
13
11
640
7.5
533
425
62
36
21
15
13
480
10
400
490
85
43
23
17
15
96
50
80
2000
260
134
73
46
34
80
60
66.7
2100
273
139
77
48
38
40
120
33.3
2400
315
175
95
64
51
32
150
26.7
2500
335
185
110
71
58
16
300
13.3
3100
420
240
145
95
81
5
960
4.17
4800
690
390
240
170
145
2
2400
1.67
7500
1100
640
390
273
235
1
4800
0.83
16,300
2200
1200
670
427
345
Table 7. Effective Resolution (Peak-to-Peak Resolution) vs. Gain and Output Data Rate
Filter Word
(Decimal)
Output
Data Rate
(Hz)
Settling
Time
(ms)
Gain of 11
Gain of 81
Gain of 161
Gain of 321
Gain of 641
Gain of 1281
1023
4.7
852.5
24 (22)
24 (21.5)
23.5 (21)
22.5 (20)
640
7.5
533
24 (22)
24 (21.5)
23.5 (21)
23 (20.5)
22.5 (20)
480
10
400
24 (21.5)
23.5 (21)
23 (20.5)
22 (19.5)
96
50
80
22 (19.5)
21.5 (19)
21 (18.5)
80
60
66.7
22 (19.5)
21.5 (19)
20.5 (18)
40
120
33.3
22 (19.5)
21.5 (19)
21 (18.5)
20.5 (18)
32
150
26.7
21.5 (19)
21 (18.5)
20 (17.5)
16
300
13.3
21.5 (19)
21 (18.5)
20.5 (18)
19.5 (17)
5
960
4.17
20.5 (18)
20 (17.5)
19.5 (17)
19 (16.5)
2
2400
1.67
20 (17.5)
19.5 (17)
19 (16.5)
18 (15.5)
1
4800
0.83
19 (16.5)
18.5 (16)
17.5 (15)
1 The output peak-to-peak (p-p) resolution is listed in parentheses.
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