AD7679(Rev0) 데이터 시트보기 (PDF) - Analog Devices
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AD7679 Datasheet PDF : 28 Pages
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120
100
80
60
40
20
0
0
0.5
1.0
1.5
2.0
POSITIVE DNL (LSB)
03085-0-011
Figure 11. Typical Positive DNL Distribution (424 Units)
180
160
140
120
100
80
60
40
20
0
–1.00
–0.75
–0.50
–0.25
NEGATIVE DNL (LSB)
0
03085-0-014
Figure 12. Typical Negative DNL Distribution (424 Units)
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0
fS = 570kSPS
fIN = 10kHz
VREF = 4.096V
SNR = 98.5dB
THD = 115.8dB
SFDR = 117.4dB
S/(N+D) = 98.4dB
30 60
90 120 150 180 210 240 270
FREQUENCY (kHz)
03085-0-012
Figure 13. FFT (10 kHz Tone)
AD7679
105
17.0
100
16.5
SNR
95
16.0
90
15.5
S/(N+D)
85
15.0
ENOB
80
14.5
75
1
10
100
FREQUENCY (kHz)
14.0
1000
03085-0-015
Figure 14. SNR, S/(N+D), and ENOB vs. Frequency
–60
140
–70
120
SFDR
–80
100
–90
–100
–110
–120
THD
80
THIRD
HARMONIC
60
40
SECOND
HARMONIC
20
–130
1
10
100
FREQUENCY (kHz)
0
1000
03085-0-016
Figure 15. THD, SFDR, and Harmonics vs. Frequency
102
VREF = 4.096V
100
SNR
S/(N+D)
98
96
–60
–50
–40
–30
–20
–10
0
INPUT LEVEL (dB)
03085-0-017
Figure 16. SNR and S/(N+D) vs. Input Level
Rev. 0 | Page 13 of 28
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