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AD7607 数据表(PDF) 17 Page - Analog Devices

部件名 AD7607
功能描述  8-Channel Differential DAS with 18-Bit, Bipolar, Simultaneous Sampling ADC
PDF  36 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
AD7609
Rev. A | Page 17 of 36
80
85
90
95
100
105
10
100
10k
10k
100k
INPUT FREQUENCY (Hz)
NO OS
OS × 2
OS × 4
OS × 8
OS × 16
OS × 32
OS × 64
AVCC, VDRIVE = 5V
fSAMPLE CHANGES WITH OS RATE
TA = 25°C
INTERNAL REFERENCE
±5V RANGE
Figure 20. SNR vs. Input Frequency, ±5 V Range
–120
–110
–100
–90
–80
–70
–60
1
10
100
FREQUENCY (kHz)
±10V RANGE
AVCC, VDRIVE = 5V
TA = 25°C
fSAMPLE = 200 kSPS
RSOURCE MATCHED
ON Vx+, Vx– INPUTS
10kΩ
5kΩ
10Ω
0Ω
1.2kΩ
500Ω
Figure 21. THD vs. Input Frequency for Various Source Impedances,
±10 V Range
–120
–110
–100
–90
–80
–70
–60
–50
–40
1
10
100
FREQUENCY (kHz)
±5V RANGE
AVCC, VDRIVE = 5V
TA = 25°C
fSAMPLE = 200 kSPS
RSOURCE MATCHED
ON Vx+, Vx– INPUTS
10kΩ
5kΩ
10Ω
0Ω
1.2kΩ
500Ω
Figure 22. THD vs. Input Frequency for Various Source Impedances,
±5 V Range
200 kSPS
AVCC,VDRIVE = 5V
EXTERNAL REFERENCE
±5V RANGE
±10V RANGE
–6
–4
–2
0
2
4
6
8
–40
–20
0
20
40
60
80
TEMPERATURE (°C)
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)
AVCC, VDRIVE = 5V
INTERNAL REFERENCE
AD7609 RECOMMENDED DECOUPLING USED
fSAMPLE = 200kSPS
TA = 25°C
±5V RANGE
±10V RANGE
Figure 25. Channel-to-Channel Isolation



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