參數(shù)資料
型號: AD9854AST
廠商: ANALOG DEVICES INC
元件分類: XO, clock
英文描述: CMOS 300 MHz Quadrature Complete-DDS
中文描述: PLL FREQUENCY SYNTHESIZER, 200 MHz, PQFP80
封裝: MS-026BEC, LQFP-80
文件頁數(shù): 11/44頁
文件大?。?/td> 433K
代理商: AD9854AST
AD9854
–11–
REV. 0
DAC CURRENT – mA
55
0
S
54
53
52
51
50
49
48
5
10
15
20
25
Figure 19. SFDR vs. DAC Current, 59.1 A
OUT
, 300 MHz
EXTCLK
FREQUENCY – MHz
620
0
S
615
610
605
600
595
590
20
40
60
80
100
120
140
Figure 20. Supply Current vs. Output Frequency; Variation
Is Minimal as a Percentage and Heavily Dependent on
Tuning Word
RISE TIME
1.04ns
500ps/DIV
232mV/DIV
50
V
INPUT
JITTER
[10.6ps RMS]
–33ps
0ps
+33ps
Figure 21. Typical Comparator Output Jitter, 40 MHz
A
OUT
, 300 MHz EXTCLK/REFCLK Multiplier Disabled
REF1 RISE
1.174ns
C1 FALL
1.286ns
CH1
500mV
V
M 500ps CH1
980mV
Figure 22. Comparator Rise/Fall Times
Figure 18. Residual Phase Noise (5.2 MHz A
OUT
), REFCLK Multiplier Disabled, EXTCLK = 300 MHz
FREQUENCY – Hz
–110
100
P
–115
–120
–125
–130
–135
–140
–145
–150
–155
1k
10k
100k
80MHz
5MHz
a. Residual Phase Noise, 300 MHz Direct Clocking
FREQUENCY – Hz
–110
100
P
–115
–120
–125
–130
–135
–140
–145
–150
–155
1k
10k
100k
80MHz
5MHz
b. Residual Phase Noise, 300 MHz (10
×
REFCLK Multiplier
Enabled)
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