Datasheet

AD9444
Rev. 0 | Page 18 of 40
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0 7.68 15.36 23.04 30.72
FREQUENCY (MHz)
AMPLITUDE (dBFS)
05089-030
61.44MSPS
TOTAL INPUT SIGNAL
POWER: –30dBFS
Figure 30. 64K FFT, 61.44 MSPS, 4 @ WCDMA, IF = 46.08 MHz
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0 5 10 15 20 25 30 35 40
FREQUENCY (MHz)
AMPLITUDE (dBFS)
05089–031
NPR: 63.1dB
Figure 31. NPR, 80 MSPS/18 MHz Notch
05089-032
70
75
80
85
90
95
100
105
20 30 40 50 60 70 80
CLOCK DUTY CYCLE (%)
dB
SFDR - DCS OFF (dBFS)
SFDR - DCS ON (dBFS)
SNR - DCS OFF (dB)
SNR - DCS ON (dB)
Figure 32. Single-Tone SNR/SFDR vs. Clock Duty Cycle,
F
SAMPLE
= 80 MSPS, 10.3 MHz @ −0.5 dBFS
05089-033
0
2000
4000
6000
8000
10000
12000
8179 8180 8181 8182 8183 8184 8185 8186 8187
B
IN
FREQUENCY
Figure 33. Ground Input Histogram
80 MSPS, VIN+ = VIN−, 32K Samples
05089-034
50
70
90
110
130
150
170
190
210
230
250
20 30 40 50 60 70 80 90 100 110 120 130
SAMPLE RATE (MSPS)
CURRENT (mA)
AVDD1 (3.3V)
AVDD2 (5.0V)
DRVDD (3.3V)
Figure 34. I
SUPPLY
vs. Sample Rate, A
IN
= 10.3 MHz @ −0.5 dBFS
60
65
70
75
80
85
90
95
100
2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9
V
IN
COMMON-MODE (V)
(dB)
05089-035
SFDR (dBc)
SNR (dB)
Figure 35. Single-Tone SNR/SFDR vs.
V
IN
Common-Mode Voltage 80 MSPS/10.3 MHz