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AD7607 数据表(PDF) 16 Page - Analog Devices

部件名 AD7607
功能描述  8-Channel DAS with 18-Bit, Bipolar, Simultaneous Sampling ADC
PDF  32 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) 16 Page - Analog Devices

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AD7608
Data Sheet
Rev. A | Page 16 of 32
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
±5V RANGE
OS × 64
OS × 32
OS × 16
OS × 8
OS × 4
OS × 2
NO OS
Figure 20. SNR vs. Input Frequency for Different Oversampling Rates, ±5 V Range
–40
–50
–60
–70
–80
–90
–100
–110
1k
100k
10k
–120
INPUT FREQUENCY (Hz)
±10V RANGE
AVCC, VDRIVE = 5V
fSAMPLE = 200kSPS
RSOURCE MATCHED ON Vx AND VxGND INPUTS
105kΩ
48.7kΩ
23.7kΩ
10kΩ
5kΩ
1.2kΩ
100Ω
51Ω
0Ω
Figure 21. THD vs. Input Frequency for Various Source Impedances, ±10 V Range
1k
100k
10k
INPUT FREQUENCY (Hz)
±5V RANGE
AVCC, VDRIVE = 5V
fSAMPLE = 200kSPS
RSOURCE MATCHED ON Vx AND VxGND INPUTS
105kΩ
48.7kΩ
23.7kΩ
10kΩ
5kΩ
1.2kΩ
100Ω
51Ω
0Ω
–40
–50
–60
–70
–80
–90
–100
–110
–120
Figure 22. THD vs. Input Frequency for Various Source Impedances, ±5 V Range
4.0
–40
–25
–10
5
20
35
50
65
80
–4.0
–3.2
–2.4
–1.6
–0.8
0
0.8
1.6
2.4
3.2
TEMPERATURE (°C)
200kSPS
AVCC, VDRIVE = 5V
EXTERNAL REFERENCE
±5V RANGE
±10V RANGE
Figure 23. Bipolar Zero Code Error vs. Temperature
16
12
8
4
0
–4
–8
–12
–40
–25
–10
5
20
35
50
65
80
–16
TEMPERATURE (°C)
200kSPS
AVCC, VDRIVE = 5V
EXTERNAL REFERENCE
±5V RANGE
±10V RANGE
Figure 24. Bipolar Zero Code Error Matching Between Channels
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
160
140
120
100
80
60
40
20
–140
NOISE FREQUENCY (kHz)
±10V RANGE
±5V RANGE
AVCC, VDRIVE = 5V
INTERNAL REFERENCE
AD7608 RECOMMENDED DECOUPLING USED
fSAMPLE = 150kSPS
TA = 25°C
INTERFERER ON ALL UNSELECTED CHANNELS
Figure 25. Channel-to-Channel Isolation



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