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AD7626 Datasheet(PDF) 13 Page - Analog Devices

Part # AD7626
Description  16-Bit, 10 MSPS, PulSAR Differential ADC
PDF  30 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7626 Datasheet(HTML) 13 Page - Analog Devices

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AD7626
Data Sheet
Rev. D | Page 12 of 29
0
–20
–40
–60
SECOND
HARMONIC
THIRD
HARMONIC
–80
–100
–120
–140
–160
–180
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
FREQUENCY (MHz)
INPUT FREQUENCY = 5.00656128MHz
–0.5dB INPUT AMPLITUDE
SNR = 86.7dBFS
SINAD = 83.2dBFS
THD = –85.3dB
SFDR = 86.1dB
64k SAMPLES
FOURTH
HARMONIC
FIFTH
HARMONIC
Figure 11. FFT, 5 MHz, −0.5 dB Input Tone, Wide View
0
–20
–40
–60
FUNDAMENTAL
–80
–100
–120
–140
–160
–180
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
FREQUENCY (MHz)
INPUT FREQUENCY = 5.00656128MHz
–6dB INPUT AMPLITUDE
SNR = 88.4dBFS
SINAD = 88.0dBFS
THD = –92.4dB
SFDR = 92.8dB
64k SAMPLES
THIRD
HARMONIC
FIFTH
HARMONIC
SECOND
HARMONIC
FOURTH
HARMONIC
Figure 12. FFT, 5 MHz, −6 dB Input Tone, Wide View
–75
–80
–85
–90
–95
–100
–105
–110
–115
–18
0
–15
–12
–9
–6
–3
INPUT AMPLITUDE (dBFS)
1MHz
2MHz
3MHz
5MHz
9.7MHz
Figure 13. THD vs. Input Amplitudes at Input Frequency Tones of
10 kHz to 9.7 MHz
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
4.50
4.55
4.60
4.65
4.70
4.75
4.80
4.85
4.90
4.95
5.00
FREQUENCY (MHz)
INPUT FREQUENCY = 5.00656128MHz
–0.5dB INPUT AMPLITUDE
SNR = 86.7dBFS
SINAD = 83.2dBFS
THD = –85.3dB
SFDR = 86.1dB
64k SAMPLES
FUNDAMENTAL
THIRD
HARMONIC
FIFTH
HARMONIC
Figure 14. FFT, 5 MHz, −0.5 dB Input Tone Zoomed View
0
–20
–40
–60
FUNDAMENTAL
–80
–100
–120
–140
–160
–180
4.50
4.55
4.60
4.65
4.70
4.75
4.80
4.85
4.90
4.95
5.00
FREQUENCY (MHz)
INPUT FREQUENCY = 5.00656128MHz
–6dB INPUT AMPLITUDE
SNR = 88.4dBFS
SINAD = 88.0dBFS
THD = –92.4dB
SFDR = 92.8dB
64k SAMPLES
THIRD
HARMONIC
FIFTH HARMONIC
Figure 15. FFT, 5 MHz, −0.5 dB Input Tone Zoomed View
SNR
THD
–50
–60
–70
–80
–90
–100
–110
10k
10M
100k
1M
INPUT FREQUENCY (Hz)
94
92
90
88
86
84
82
80
Figure 16. THD and SNR vs. Input Frequency (−0.5 dB Input Tone)



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