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