參數(shù)資料
型號(hào): ADF4251BCP
廠商: ANALOG DEVICES INC
元件分類: XO, clock
英文描述: Dual Fractional-N/Integer-N Frequency Synthesizer
中文描述: PLL FREQUENCY SYNTHESIZER, 3000 MHz, QCC24
封裝: 4 X 4 MM, MO-200-VGGD2, LFCSP-24
文件頁數(shù): 10/28頁
文件大小: 387K
代理商: ADF4251BCP
REV. 0
–10–
ADF4251
FREQUENCY –GHz
0
–35
0
6
1
A
2
3
4
5
–5
–10
–15
–25
–30
–20
PRESCALER = 4/5
PRESCALER = 8/9
TPC 19. RF Input Sensitivity
IF INPUT FREQUENCY – GHz
0
5
35
–0.4
1.6
0.1
I
0.6
1.1
15
20
25
30
10
40
V
DD
= 3V
VP2 = 3V
TPC 20. IF Input Sensitivity
PHASE DETECTOR FREQUENCY – Hz
–120
–130
–180
10k
10M
100k
P
1M
–150
–160
–170
–140
V
DD
= 3V
V
P
= 5V
TPC 21. Phase Noise (Referred to CP Output) vs.
PFD Frequency, RF Side
PHASE DETECTOR FREQUENCY – Hz
–120
–130
–18010k
10M
100k
P
1M
–150
–160
–170
–140
V
DD
= 3V
V
P
= 3V
TPC 22. Phase Noise (Referred to CP Output) vs.
PFD Frequency, IF Side
V
CP
– V
6
4
0
0.5
I
C
1.5
0
–2
–4
2
–6
V
DD
= 3V
VP1 = 5.5V
1.0
2.0
3.0
2.5
4.0
3.5
4.5
5.5
5.0
TPC 23. RF Charge Pump Output Characteristics
V
CP
– V
6
4
0
0.5
I
C
1.5
0
–2
–4
2
–6
V
DD
= 3V
VP2 = 3V
1.0
2.0
3.0
2.5
TPC 24. IF Charge Pump Output Characteristics
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