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AD7934 Datasheet(PDF) 12 Page - Analog Devices

Part # AD7934
Description  4-Channel, 1.5 MSPS, 10-Bit and 12-Bit Parallel ADCs with a Sequencer
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7934 Datasheet(HTML) 12 Page - Analog Devices

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AD7933/AD7934
Rev. B | Page 12 of 32
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 9. AD7934 DNL vs. VREF for VDD = 3 V
VREF (V)
12
11
10
8
9
7
6
00.5
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 10. AD7934 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
00.5
1.5
1.0
2.5
2.0
3.5
3.0
SINGLE-ENDED MODE
VDD =5V
VDD =3V
Figure 11. AD7934 Offset vs. VREF
CODE
10000
9000
7000
8000
3000
4000
5000
6000
2000
1000
0
2046
2047
2048
2049
2050
DIFFERENTIAL MODE
3CODES
INTERNAL
REF
9997
CODES
Figure 12. AD7934 Histogram of Codes for
10,000 Samples @ VDD = 5 V with Internal Reference
RIPPLE FREQUENCY (kHz)
60
70
80
100
90
110
120
0
200
400
800
600
1200
1000
DIFFERENTIAL MODE
Figure 13. CMRR vs. Common-Mode Ripple with VDD = 5 V and 3 V



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