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AD7607 数据表(PDF) 17 Page - Analog Devices

部件名 AD7607
功能描述  8-Channel DAS with 18-Bit, Bipolar, Simultaneous Sampling ADC
PDF  32 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7607 数据表(HTML) 17 Page - Analog Devices

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Data Sheet
AD7608
Rev. A | Page 17 of 32
80
85
90
95
100
105
110
NO OS
OS × 2
OS × 4 OS × 8 OS × 16 OS × 32 OS × 64
OVERSAMPLING RATIO
AVCC, VDRIVE = 5V
TA = 25 °C
INTERNAL REFERENCE
fSAMPLE SCALES WITH OS RATIO
fIN SCALES WITH OS RATIO
±5V RANGE
±10V RANGE
Figure 26. Dynamic Range vs. Oversampling Ratio
2.5010
2.5005
2.5000
2.4995
2.4990
2.4985
–40
–25
–10
5
20
35
50
65
80
2.4980
TEMPERATURE (°C)
AVCC = 4.75V
AVCC = 5V
AVCC = 5.25V
Figure 27. Reference Output Voltage vs. Temperature for Different
Supply Voltages
8
–10
–8
–6
–4
–2
10
8
6
4
2
0
–10
–8
–6
–4
–2
0
2
4
6
INPUT VOLTAGE (V)
–40°C
+25°C
+85°C
AVCC, VDRIVE = 5V
fSAMPLE = 200kSPS
Figure 28. Analog Input Current vs. Input Voltage Across Temperature
22
20
18
16
14
12
10
8
OVERSAMPLING RATIO
AVCC, VDRIVE = 5V
TA = 25°C
INTERNAL REFERENCE
fSAMPLE VARIES WITH OS RATE
NO OS
OS2
OS4
OS8
OS16
OS32
OS64
Figure 29. Supply Current vs. Oversampling Rate
140
0
1100
1000
900
800
700
600
500
400
300
200
100
60
70
80
90
100
110
120
130
AVCC NOISE FREQUENCY (kHz)
AVCC, VDRIVE = 5V
INTERNAL REFERENCE
AD7608 RECOMMENDED DECOUPLING USED
fSAMPLE = 200kSPS
TA = 25°C
±10V RANGE
±5V RANGE
Figure 30. PSRR



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