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AD7607 数据表(PDF) 18 Page - Analog Devices

部件名 AD7607
功能描述  8-Channel Differential DAS with 18-Bit
PDF  36 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7607 数据表(HTML) 18 Page - Analog Devices

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AD7609
Data Sheet
Rev. A | Page 18 of 36
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
±10V RANGE
±5V 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
–15
–10
–5
0
5
10
–20
–15
–10
–5
0
5
10
15
20
DIFFERENTIAL ANALOG INPUT VOLTAGE (Vx+ – (Vx–)) (V)
+25°C V+
+25°C V–
+85°C V–
+85°C V+
–40°C V–
–40°C V+
AVCC, VDRIVE = 5V
fSAMPLE = 200kSPS
Figure 28. Analog Input Current vs. Input Voltage Over 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
OS × 2
OS × 4
OS × 8
OS × 16
OS × 32
OS × 64
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
AD7609 RECOMMENDED DECOUPLING USED
fSAMPLE = 200kSPS
TA = 25°C
±10V RANGE
±5V RANGE
Figure 30. PSRR
–100
–90
–80
–70
–60
–50
–40
–30
–20
0
–10
10
100
1k
10k
100k
FREQUENCY (Hz)
±10V RANGE
±5V RANGE
AVCC, VDRIVE = 5V
TA = 25°C
fSAMPLE = 200kSPS
INTERNAL REFERENCE
Figure 31. CMRR vs. Common-Mode Ripple Frequency



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