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AD7942 数据表(PDF) 9 Page - Analog Devices

部件名 AD7942
功能描述  16-Bit, 1 MSPS PulSAR ADC in MSOP QFN
Download  12 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7942 数据表(HTML) 9 Page - Analog Devices

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AD7980-EP
Rev. 0 | Page 9 of 12
180k
0
800C 800D 800E 800F
8009
8008
800B
800A
8003
8005
8004
8007
8006
2
0
0
0
33
829
0
27
0
1201
CODE IN HEX
140k
160k
100k
120k
60k
20k
80k
40k
38751
168591
52710
Figure 11. Histogram of a DC Input at the Code Center, REF = 5 V
70k
0
7FFF
8008
8001
8000
8003
8002
8005
8004
8007
8006
0
0
150
2
59691
5428
59404
3
93
CODE IN HEX
60k
50k
30k
10k
40k
20k
6295
Figure 12. Histogram of a DC Input at the Code Transition, REF = 5 V
100
80
85
90
95
2.25
5.25
REFERENCE VOLTAGE (V)
16
12
13
14
15
2.75
3.25
3.75
4.25
4.75
SNR
SINAD
ENOB
Figure 13. SNR, SINAD, and ENOB vs. Reference Voltage
60k
0
7FFA
8006
7FFC
7FFB
7FFE 7FFF
7FFD
8001
8000
8003 8004 8005
8002
0
0
0
0
539
16
14
502
CODE IN HEX
50k
30k
10k
40k
20k
32417
52212
31340
7225
6807
Figure 14. Histogram of a DC Input at the Code Center, REF = 2.5 V
95
85
87
89
92
91
93
94
86
88
90
–10
0
INPUT LEVEL (dB OF FULL SCALE)
–9
–8
–7
–6
–5
–4
–3
–2
–1
Figure 15. SNR vs. Input Level
–95
–125
–110
–115
–105
–100
–120
115
85
100
95
105
110
90
2.25
5.25
REFERENCE VOLTAGE (V)
2.75
3.25
3.75
4.25
4.75
THD
SFDR
Figure 16. THD, SFDR vs. Reference Voltage


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