參數(shù)資料
型號: EVAL-AD7781EBZ
廠商: Analog Devices Inc
文件頁數(shù): 2/16頁
文件大小: 0K
描述: BOARD EVAL FOR AD7781
標準包裝: 1
ADC 的數(shù)量: 1
位數(shù): 20
采樣率(每秒): 470
數(shù)據(jù)接口: SPI?
輸入范圍: ±5 V
工作溫度: -40°C ~ 105°C
已用 IC / 零件: AD7781
已供物品:
AD7781
Rev. 0 | Page 10 of 16
OUTPUT NOISE AND RESOLUTION
Table 7 and Table 8 show the rms noise of the AD7781 for the two output data rates and gain settings when using a 3 V and a 5 V reference.
These numbers are typical and are generated with a differential input voltage of 0 V. The peak-to-peak (p-p) resolution is also listed. The
p-p resolution represents the resolution for which there is no code flicker. These numbers are typical.
Table 7. RMS Noise and Peak-to-Peak Resolution When AVDD = 3 V and VREF = 3 V
Parameter
Gain = 128
Gain = 1
Update Rate
10 Hz
16.7 Hz
10 Hz
16.7 Hz
RMS Noise
C Grade
44 nV
65 nV
2.4 μV
2.7 μV
B Grade
55 nV
90 nV
2.4 μV
2.7 μV
P-P Resolution
C Grade
17.6
17.1
18.8
18.7
B Grade
17.3
16.6
18.8
18.7
Table 8. RMS Noise and Peak-to-Peak Resolution When AVDD = 5 V and VREF = 5 V
Parameter
Gain = 128
Gain = 1
Update Rate
10 Hz
16.7 Hz
10 Hz
16.7 Hz
RMS Noise
C Grade
49 nV
69 nV
3.0 μV
2.7 μV
B Grade
60 nV
90 nV
3.0 μV
2.7 μV
P-P Resolution
C Grade
18.2
17.7
19.3
19.4
B Grade
17.9
17.3
19.3
19.4
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