Datasheet

Data Sheet AD9613
Rev. C | Page 21 of 36
0
–20
–40
–60
–80
–100
–120
–140
10
0
20 30 40 50 60 70 80 90 100 110 120
FREQUENCY (MHz)
AMPLITUDE (dBFS)
09637-043
250MSPS
184.12MHz @ –7dBFS
187.12MHz @ –7dBFS
SFDR = 86dBc (93dBFS)
Figure 36. AD9613-250 Two-Tone FFT with f
IN1
= 184.12, f
IN2
= 187.12 MHz,
f
S
= 250 MSPS
100
95
90
85
80
75
70
65
220200180160140120100806040 240
SAMPLE RATE (MSPS)
SNR/SFDR (dBc AND dBFS)
09637-044
SNR, CHANNEL B
SFDR, CHANNEL B
SNR, CHANNEL A
SFDR, CHANNEL A
Figure 37. AD9613-250 Single-Tone SNR/SFDR vs. Sample Rate (f
S
)
with f
IN
= 90.1 MHz
12,000
14,000
16,000
10,000
8000
6000
4000
2000
0
N + 1NN – 1
OUTPUT CODE
NUMBER OF HITS
09637-045
0.39LSB rms
16,384 TOTAL HITS
Figure 38. AD9613-250 Grounded Input Histogram