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AD7939BCPZ датащи(PDF) 12 Page - Analog Devices

номер детали AD7939BCPZ
подробное описание детали  8-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer
PDF  36 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD7939BCPZ датащи(HTML) 12 Page - Analog Devices

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AD7938/AD7939
Data Sheet
Rev. C | Page 12 of 36
VREF (V)
4
3
1
2
0
–1
0.25
0.50
1.25
0.75
1.00
2.00
1.75
1.50
2.75
2.50
2.25
SINGLE-ENDED MODE
POSITIVE DNL
NEGATIVE DNL
Figure 10. AD7938 DNL vs. VREF for VDD = 3 V
VREF (V)
12
11
10
8
9
7
6
0
0.5
1.5
1.0
2.5
2.0
4.0
3.5
3.0
VDD = 5V
DIFFERENTIAL MODE
VDD = 5V
SINGLE-ENDED MODE
VDD = 3V
SINGLE-ENDED MODE
VDD = 3V
DIFFERENTIAL MODE
Figure 11. AD7938 ENOB vs. VREF
VREF (V)
0
–0.5
–1.5
–1.0
–3.5
–3.0
–2.5
–2.0
–4.0
–4.5
–5.0
0
0.5
1.5
1.0
2.5
2.0
3.5
3.0
SINGLE-ENDED MODE
VDD = 5V
VDD = 3V
Figure 12. AD7938 Offset vs. VREF
CODE
10000
9000
7000
8000
3000
4000
5000
6000
2000
1000
0
2046
2047
2048
2049
2050
DIFFERENTIAL MODE
3 CODES
INTERNAL
REF
9997
CODES
Figure 13. AD7938 Histogram of Codes for
10k Samples @ VDD = 5 V with the Internal Reference
RIPPLE FREQUENCY (kHz)
60
70
80
100
90
110
120
0
200
400
800
600
1200
1000
DIFFERENTIAL MODE
Figure 14. CMRR vs. Ripple Frequency with VDD = 5 V and 3 V



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