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AD8021 Datasheet(PDF) 10 Page - Analog Devices

Part # AD8021
Description  18-Bit, 2 MSPS PulSAR 15 mW ADC in LFCSP (QFN)
PDF  28 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD8021 Datasheet(HTML) 10 Page - Analog Devices

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



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