AD6643 Просмотр технического описания (PDF) - Analog Devices
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AD6643 Datasheet PDF : 40 Pages
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AD6643
0
250MSPS
220.1MHz @ –1.0dBFS
–20
SNR = 64.6dB (65.6dBFS)
SFDR = 85dBc
–40
–60
SECOND HARMONIC
THIRD HARMONIC
–80
–100
–120
–140
0
10 20 30 40 50 60 70 80 90 100 110 120
FREQUENCY (MHz)
Figure 24. AD6643-250 Single Tone FFT, fIN = 220.1 MHz
0
250MSPS
305.1MHz @ –1.0dBFS
–20
SNR = 64.4dB (65.4dBFS)
SFDR = 80dBc
–40
–60
THIRD HARMONIC
SECOND HARMONIC
–80
–100
–120
–140
0
10 20 30 40 50 60 70 80 90 100 110 120
FREQUENCY (MHz)
Figure 25. AD6643-250 Single Tone FFT, fIN = 305.1 MHz
120
100
SFDR (dBFS)
80
60
SNR (dBFS)
40
SFDR (dBc)
SNR (dBc)
20
0
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0
INPUT AMPLITUDE (dBFS)
Figure 26. AD6643-250 Single Tone SNR/SFDR vs. Input Amplitude (AIN) with
fIN = 90.1 MHz
Data Sheet
100
95
90
SFDR (dBc)
85
80
75
70
SNR (dBFS)
65
60
60
90 120 150 180 210 240 270 300 330 360 390
FREQUENCY (MHz)
Figure 27. AD6643-250 Single Tone SNR/SFDR vs. Input Frequency (fIN),
VREF = 1.75 V p-p
0
–20
SFDR (dBc)
–40
IMD3 (dBc)
–60
–80
SFDR (dBFS)
–100
IMD3 (dBFS)
–120
–90 –80 –70 –60 –50 –40 –30 –20 –10
INPUT AMPLITUDE (dBFS)
Figure 28. AD6643-250 Two Tone SFDR/IMD3 vs. Input Amplitude (AIN) with
fIN1 = 89.12 MHz, fIN2 = 92.12 MHz
0
–20
SFDR (dBc)
–40
IMD3 (dBc)
–60
–80
SFDR (dBFS)
–100
IMD3 (dBFS)
–120
–90 –80 –70 –60 –50 –40 –30 –20 –10
INPUT AMPLITUDE (dBFS)
Figure 29. AD6643-250 Two Tone SFDR/IMD3 vs. Input Amplitude (AIN) with
fIN1 = 184.12 MHz, fIN2 = 187.12 MHz
Rev. C | Page 18 of 40
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