AD7982(RevD) 查看數據表（PDF） - Analog Devices
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AD7982 Datasheet PDF : 26 Pages
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Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
VDD = 2.5 V, VREF = 5.0 V, VIO = 3.3 V.
2.0
POSITIVE INL: +0.79 LSB
NEGATIVE INL: –0.68 LSB
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0
65536
131072
CODE
196608
262144
Figure 6. INL vs. Code
60000
50000
50975
40000
30000
29064
32476
20000
10000
7795
9064
00
3FFF0
0 29 745
881 43 0
3FFF2
3FFF4
3FFF6
3FFF8
CODE IN HEX
3FFFA
0
3FFFC
Figure 7. Histogram of a DC Input at the Code Center
0
fS = 1MSPS
–20
fIN = 2kHz
SNR = 97.3dB
–40
THD = –121.8dB
SFDR = 120.2dB
–60
SINAD = 97.3dB
–80
–100
–120
–140
–160
–180
0
100
200
300
400
500
FREQUENCY (kHz)
Figure 8. Fast Fourier Transform (FFT) Plot
AD7982
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0
65536
131072
CODE
196608
Figure 9. DNL vs. Code
262144
50000
45000
44806
43239
40000
35000
30000
25000
20000
15000
16682
20013
10000
5000
2793
3158
0 0 0 7 145
222 7 0 0
0 1 2 3 4 5 6 7 8 9 ABC D
CODE IN HEX
Figure 10. Histogram of a DC Input at the Code Transition
100
99
98
97
96
95
94
93
92
91
90
–10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0
INPUT LEVEL (dB)
Figure 11. SNR vs. Input Level
Rev. D | Page 9 of 25
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