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AD7771 Datasheet(PDF) 20 Page - Analog Devices

Part # AD7771
Description  8-Channel, 24-Bit, Simultaneous Sampling ADC
PDF  99 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7771 Datasheet(HTML) 20 Page - Analog Devices

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Data Sheet
AD7771
Rev. 0 | Page 19 of 98
300
250
200
150
100
50
0
ADC CODE
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
VREF = 2.5V
VCM = (AVDD1x + AVSSx) ÷ 2
TA = 25°C
Figure 20. Noise Histogram at 64 kSPS, High Resolution Mode,
Sinc5 Filter Enabled
12
0
125
TEMPERATURE (°C)
2
4
6
8
10
–40
25
105
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
VREF = 2.5V
VCM = (AVDD1x + AVSSx) ÷ 2
Figure 21. Noise vs. Temperature at 16 kSPS, High Resolution Mode,
Sinc3 Filter Enabled
18
0
2
4
6
8
10
12
14
16
125
TEMPERATURE (°C)
–40
25
105
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
VREF = 2.5V
VCM = (AVDD1x + AVSSx) ÷ 2
Figure 22. Noise vs. Temperature at 64 kSPS, High Resolution Mode,
Sinc5 Filter Enabled
300
250
200
150
100
50
0
ADC CODE
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
VREF = 2.5V
VCM = (AVDD1x + AVSSx) ÷ 2
TA = 25°C
Figure 23. Noise Histogram at 16 kSPS, Low Power Mode,
Sinc5 Filter Enabled
12
0
125
TEMPERATURE (°C)
2
4
6
8
10
–40
25
105
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
VREF = 2.5V
VCM = (AVDD1x + AVSSx) ÷ 2
Figure 24. Noise vs. Temperature at 4 kSPS, Low Power Mode,
Sinc3 Filter Enabled
20
0
2
4
6
8
10
12
14
16
18
125
TEMPERATURE (°C)
–40
25
105
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
VREF = 2.5V
VCM = (AVDD1x + AVSSx) ÷ 2
Figure 25. Noise vs. Temperature at 16 kSPS, Low Power Mode,
Sinc5 Filter Enabled



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