AD76901 查看數據表（PDF） - Analog Devices
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AD76901 Datasheet PDF : 28 Pages
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AD7986
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
–200
0
100
fS = 2MSPS
fIN = 20kHz
SNR = 97.0dB
THD = –114.0dB
SINAD = 97.0dB
200k
400k
600k
FREQUENCY (Hz)
800k
Figure 11. FFT Plot (External Reference)
SNR
1M
18
95
17
SINAD
90
ENOB
16
85
15
80
2.5
3.0
3.5
4.0
4.5
REFERENCE VOLTAGE (V)
14
5.0
Figure 12. SNR, SINAD, and ENOB vs. Reference Voltage
100
95
90
85
80
1k
10k
100k
1M
FREQUENCY (Hz)
Figure 13. SINAD vs. Frequency
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0
–95
fS = 2MSPS
fIN = 20kHz
SNR = 95.5dB
THD = –113.0dB
SINAD = 95.5dB
200k
400k
600k
800k
1M
FREQUENCY (Hz)
Figure 14. FFT Plot (Internal Reference)
125
–100
120
–105
115
SFDR
–110
110
THD
–115
105
–120
100
–125
2.5
3.0
3.5
4.0
4.5
REFERENCE VOLTAGE (V)
95
5.0
Figure 15. THD and SFDR vs. Reference Voltage
–80
–85
–90
–95
–100
–105
–110
–115
–120
–125
1k
10k
100k
1M
FREQUENCY (Hz)
Figure 16. THD vs. Frequency
Rev. B | Page 10 of 28
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