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AD7607 数据表(PDF) 15 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) 15 Page - Analog Devices

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Data Sheet
AD7608
Rev. A | Page 15 of 32
–1.0
–0.7
–0.3
–0.1
0.1
0.3
0.5
0.9
–0.9
–0.4
–0.5
–0.2
0
0.2
0.4
0.7
1.0
CODE
–0.6
–0.8
0.8
0.6
AVCC, VDRIVE = 5V
INTERNAL REFERENCE
fSAMPLE = 200 kSPS
TA = 25°C
±5V RANGE
Figure 14. Typical DNL, ±5 V Range
80
60
40
20
0
–20
–40
–60
–40
–25
–10
5
20
35
50
65
80
–80
TEMPERATURE (°C)
200kSPS
AVCC, VDRIVE = 5V
EXTERNAL REFERENCE
±5V RANGE
±10V RANGE
Figure 15. NFS Error vs. Temperature
80
60
40
20
0
–20
–40
–60
–40
–25
–10
5
20
35
50
65
80
–80
TEMPERATURE (°C)
200kSPS
AVCC, VDRIVE = 5V
EXTERNAL REFERENCE
±5V RANGE
±10V RANGE
Figure 16. PFS Error vs. Temperature
40
–40
–25
–10
5
20
35
50
65
80
–40
–32
–24
–16
–8
0
8
16
24
32
TEMPERATURE (°C)
±10V RANGE
AVCC, VDRIVE = 5V
EXTERNAL REFERENCE
PFS ERROR
NFS ERROR
Figure 17. NFS/PFS Error Matching
10
8
6
4
2
0
0
120k
100k
80k
60k
40k
20k
–2
SOURCE RESISTANCE (Ω)
AVCC, VDRIVE = 5V
fSAMPLE = 200 kSPS
TA = 25°C
EXTERNAL REFERENCE
SOURCE RESISTANCE IS MATCHED ON
THE VxGND INPUT
±10V AND ±5V RANGE
Figure 18. PFS/NFS Error vs. Source Resistance
80
85
90
95
100
105
10
100
1k
10k
100k
INPUT FREQUENCY (Hz)
AVCC, VDRIVE = 5V
fSAMPLE CHANGES WITH OS RATE
TA = 25°C
INTERNAL REFERENCE
±10V RANGE
OS × 64
OS × 32
OS × 16
OS × 8
OS × 4
OS × 2
NO OS
Figure 19. SNR vs. Input Frequency for Different Oversampling Rates, ±10 V Range



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