AD7980(RevC) 데이터 시트보기 (PDF) - Analog Devices
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AD7980 Datasheet PDF : 28 Pages
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AD7980
180k
160k
168591
140k
120k
100k
80k
60k
52710
40k
38751
20k
00
0 27 1201
829 33 2 0 0 0
8003 8004 8005 8006 8007 8008 8009 800A 800B 800C 800D 800E 800F
CODE IN HEX
Figure 12. Histogram of a DC Input at the Code Center, REF = 5 V
70k
59691 59404
60k
50k
40k
30k
20k
10k
5428
6295
00
2 150
93 3
0
7FFF 8000 8001 8002 8003 8004 8005 8006 8007 8008
CODE IN HEX
Figure 13. Histogram of a DC Input at the Code Transition, REF = 5 V
100
16
SNR
SINAD
ENOB
95
15
90
14
85
13
80
12
2.25
2.75
3.25
3.75
4.25
4.75
5.25
REFERENCE VOLTAGE (V)
Figure 14. SNR, SINAD, and ENOB vs. Reference Voltage
Data Sheet
60k
52212
50k
40k
32417
31340
30k
20k
10k
7225
6807
0 0 0 16 539
502 14 0 0
7FFA 7FFB 7FFC 7FFD 7FFE 7FFF 8000 8001 8002 8003 8004 8005 8006
CODE IN HEX
Figure 15. Histogram of a DC Input at the Code Center, REF = 2.5 V
95
94
93
92
91
90
89
88
87
86
85
–10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0
INPUT LEVEL (dB OF FULL SCALE)
Figure 16. SNR vs. Input Level
–95
115
–100
SFDR
110
–105
105
–110
100
–115
THD
95
–120
90
–125
2.25
2.75
3.25
3.75
4.25
4.75
REFERENCE VOLTAGE (V)
Figure 17. THD, SFDR vs. Reference Voltage
85
5.25
Rev. C | Page 10 of 28
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