AD6643 データシートの表示（PDF） - Analog Devices
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AD6643 Datasheet PDF : 40 Pages
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Data Sheet
0
250MSPS
89.12MHz @ –7.0dBFS
–20 92.12MHz @ –7.0dBFS
SFDR = 86dBc (93dBFS)
–40
–60
–80
–100
–120
–140
0
10 20 30 40 50 60 70 80 90 100 110 120
FREQUENCY (MHz)
Figure 30. AD6643-250 Two Tone FFT with fIN1 = 89.12 MHz, fIN2 = 92.12 MHz
0
250MSPS
184.12MHz @ –7.0dBFS
–20
187.12MHz @ –7.0dBFS
SFDR = 84dBc (91dBFS)
–40
–60
–80
–100
–120
–140
0
10 20 30 40 50 60 70 80 90 100 110 120
FREQUENCY (MHz)
Figure 31. AD6643-250 Two Tone FFT with fIN1 = 184.12 MHz, fIN2 = 187.12 MHz
AD6643
100
SFDR, CHANNEL B
95
90
85
SFDR, CHANNEL A
80
75
SNR, CHANNEL A
70
65
SNR, CHANNEL B
60
40 60 80 100 120 140 160 180 200 220 240
SAMPLE RATE (MSPS)
Figure 32. AD6643-250 Single Tone SNR/SFDR vs. Sample Rate (fS)
with fIN = 90.1 MHz
35,000
30,000
0.995LSB rms
32,768 TOTAL HITS
25,000
20,000
15,000
10,000
5000
0
N–1
N
OUTPUT CODE
N+1
Figure 33. AD6643-250 Grounded Input Histogram
Rev. C | Page 19 of 40
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