參數(shù)資料
型號: ADF4218
廠商: Analog Devices, Inc.
元件分類: XO, clock
英文描述: Dual RF PLL Frequency Synthesizers
中文描述: 雙射頻鎖相環(huán)頻率合成器
文件頁數(shù): 6/20頁
文件大?。?/td> 227K
代理商: ADF4218
REV. 0
ADF4216/ADF4217/ADF4218
–6–
Typical Performance Characteristics
FREQ-UNIT PARAM-TYPE DATA-FORMAT KEYWORD IMPEDANCE – OHMS
GHz
S
MA
R
50
MAGS11 –
FREQ
51.80711782
1.55 0.791737125
61.21554647
2.15 0.713387801
78.8391674
FREQ MAGS11 –
3.130429321
0.25 0.953621785
11.19913586
0.85 0.849338092
33.68058163
TPC 1. S-Parameter Data for the AD4218 RF Input
(Up to 2.5 GHz)
RF INPUT FREQUENCY
GHz
0
2
1
1.5
35
R
0
15
20
25
30
5
10
0.5
V
DD
= 3.3V
V
P
= 3.3V
T
A
= +85 C
T
A
= +25 C
T
A
=
40 C
2.5
3
TPC 2. Input Sensitivity for the ADF4218 (RF)
2kHz
1kHz
900MHz
+1kHz
+2kHz
V
DD
= 3V, V
P
= 5V
I
CP
= 4.375mA
PFD FREQUENCY = 200kHz
LOOP BANDWIDTH = 20kHz
RES. BANDWIDTH = 10Hz
VIDEO BANDWIDTH = 10Hz
SWEEP = 1.9 SECONDS
AVERAGES = 19
REFERENCE
LEVEL =
4.2dBm
O
100
90
80
70
60
50
40
30
20
10
0
90dBc/Hz
TPC 3. ADF4218 RF Phase Noise (900 MHz, 200 kHz, 20 kHz)
400kHz
200kHz
900MHz
+200kHz
+400kHz
V
DD
= 3V, V
P
= 5V
I
CP
= 4.375mA
PFD FREQUENCY = 200kHz
LOOP BANDWIDTH = 20kHz
RES. BANDWIDTH = 1kHz
VIDEO BANDWIDTH = 1kHz
SWEEP = 2.5 SECONDS
AVERAGES = 30
REFERENCE
LEVEL =
4.2dBm
90dBc
O
100
90
80
70
60
50
40
30
20
10
0
TPC 4. ADF4218 RF Reference Spurs (900 MHz, 200 kHz,
20 kHz)
10dB/DIVISION
40
R
L
=
40dBc/Hz
RMS NOISE = 0.55
100Hz
FREQUENCY OFFSET FROM 900MHz CARRIER
1MHz
0.55 rms
P
90
80
70
60
50
100
110
120
130
140
TPC 5. ADF4218 RF Integrated Phase Noise (900 MHz,
200 kHz, 20 kHz)
10–
40
RL =
40dBc/Hz
RMS NOISE = 0.65
100Hz
FREQUENCY OFFSET FROM 900MHz CARRIER
1MHz
0.65 rms
P
90
80
70
60
50
100
110
120
130
140
TPC 6. ADF4218 RF Integrated Phase Noise (900 MHz,
200 kHz, 35 kHz)
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