参数资料
型号: EVAL-ADF4350EB2Z
厂商: Analog Devices Inc
文件页数: 2/32页
文件大小: 0K
描述: EVALUATION BOARD 2 FOR ADF4350
标准包装: 1
主要目的: 计时,频率合成器
嵌入式:
已用 IC / 零件: ADF4350
主要属性: 带 VCO 的单路分数-N 和整数-N PLL
次要属性: USB 接口
已供物品: 板,缆线,CD
ADF4350
Rev. A | Page 10 of 32
0
–20
–40
–60
–80
–100
–120
–140
–160
P
HAS
E
NO
IS
E
(
d
Bc/
H
z)
1k
10k
FREQUENCY (Hz)
100k
1M
07
32
5-
03
4
10M
Figure 10. Integer-N Phase Noise and Spur Performance. GSM900 Band,
RFOUT = 904 MHz, REFIN = 100 MHz, PFD = 800 kHz, Output Divide-by-4
Selected; Loop-Filter Bandwidth = 16 kHz, Channel Spacing = 200 kHz.
0
–20
–40
–60
–80
–100
–120
–140
–160
P
H
AS
E
NO
IS
E
(
d
Bc/
H
z)
1k
10k
FREQUENCY (Hz)
100k
1M
07
32
5-
03
5
10M
Figure 11. Fractional-N Spur Performance; Low Noise Mode. W-CDMA Band,
RFOUT = 2113.5 MHz, REFIN = 100 MHz, PFD = 25 MHz, Output Divide-by-2
Selected; Loop Filter Bandwidth = 40 kHz, Channel Spacing = 200 kHz.
0
–20
–40
–60
–80
–100
–120
–140
–160
P
HAS
E
NO
IS
E
(
d
Bc/
H
z)
1k
10k
FREQUENCY (Hz)
100k
1M
07
32
5-
03
6
10M
Figure 12. Fractional-N Spur Performance. Low Spur Mode, W-CDMA Band
RFOUT = 2113.5 MHz, REFIN = 100 MHz, PFD = 25 MHz, Output Divide-by-2
Selected; Loop Filter Bandwidth = 40 kHz, Channel Spacing = 200 kHz
0
–20
–40
–60
–80
–100
–120
–140
–160
P
HAS
E
NO
IS
E
(
d
Bc/
H
z)
1k
10k
FREQUENCY (Hz)
100k
1M
07
32
5-
03
7
10M
Figure 13. Fractional-N Spur Performance. Low Noise Mode, RFOUT =
2.591 GHz, REFIN = 105 MHz, PFD = 17.5 MHz, Output Divide-by-1 Selected;
Loop Filter Bandwidth = 20 kHz, Channel Spacing = 100 kHz.
0
–20
–40
–60
–80
–100
–120
–140
–160
P
HAS
E
NO
IS
E
(
d
Bc/
H
z)
1k
10k
FREQUENCY (Hz)
100k
1M
07
32
5-
03
8
10M
Figure 14. Fractional-N Spur Performance. Low Spur Mode RFOUT =
2.591 GHz, REFIN = 105 MHz, PFD = 17.5 MHz, Output Divide-by-1 Selected.
Loop Filter Bandwidth = 20 kHz, Channel Spacing = 100 kHz (Note That
Fractional Spurs Are Removed and Only the Integer Boundary Spur Remains
in Low Spur Mode).
2.95
2.96
2.97
2.98
2.99
3.00
3.01
3.02
F
R
E
Q
UE
NC
Y
(
G
Hz
)
CSR OFF
CSR ON
0
100
200
300
TIME (s)
400
500
600
07
32
5-
0
39
Figure 15. Lock Time for 100 MHz Jump from 3070 MHz to 2970 MHz with
CSR On and Of f, PFD = 25 MHz, ICP = 313 μA, Loop Filter Bandwidth = 20 kHz
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