PFD = 25 MHz, loop bandwidth = 20 kHz, reference = 100 " />
參數(shù)資料
型號: EV-ADF4157SD1Z
廠商: Analog Devices Inc
文件頁數(shù): 23/24頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR ADF4157
標(biāo)準(zhǔn)包裝: 1
主要目的: 計(jì)時(shí),頻率合成器
嵌入式:
已用 IC / 零件: ADF4157
主要屬性: 單路分?jǐn)?shù)-N PLL
次要屬性: 6GHz
已供物品:
ADF4157
Data Sheet
Rev. D | Page 8 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
PFD = 25 MHz, loop bandwidth = 20 kHz, reference = 100 MHz, ICP = 313 μA, phase noise measurements taken on the Agilent E5052A
phase noise system.
10
–40
0
9
FREQUENCY (GHz)
P
O
W
E
R
(
d
Bm)
5
0
–5
–10
–15
–20
–25
–30
–35
1
2
3
4
5
6
7
8
P = 4/5
P = 8/9
05874-
016
Figure 5. RF Input Sensitivity
0
–40
0
500
FREQUENCY (MHz)
P
O
W
E
R
(
d
Bm)
–5
–10
–15
–20
–25
–30
–35
100
200
300
400
VDD = 3V
05874-
017
Figure 6. Reference Input Sensitivity
0
–160
1k
10M
FREQUENCY (Hz)
PH
A
SE
N
O
ISE
(d
B
c
/H
z)
–20
–40
–60
–80
–100
–120
–140
10k
100k
1M
RF = 5800.25MHz, PFD = 25MHz, N = 232,
FRAC = 335544, FREQUENCY RESOLUTION = 0.74Hz,
20kHz LOOP BW, ICP = 313A, DSB INTEGRATED PHASE
ERROR = 0.97° RMS, PHASE NOISE @ 2kHz = –87dBc/Hz.
05874-
018
Figure 7. Phase Noise and Spurs
(Note that the 250 kHz spur is an integer boundary spur; see the Spur
Mechanisms section for more information.)
6.00
5.65
–100
900
TIME (s)
F
RE
Q
UE
NCY
(
G
Hz
)
5.95
5.90
5.85
5.80
5.75
5.70
0
100
200
300
400
500
600
700
800
CSR OFF
CSR ON
05874-
019
Figure 8. Lock Time for 200 MHz Jump from 5705 MHz to 5905 MHz
with CSR On and Off
5.65
5.60
5.95
5.90
5.85
5.80
5.75
5.70
–100
900
TIME (s)
F
RE
Q
UE
NCY
(
G
Hz
)
0
100
200
300
400
500
600
700
800
CSR ON
CSR OFF
05874-
020
Figure 9. Lock Time for 200 MHz Jump from 5905 MHz to 5705 MHz
with CSR On and Off
6
–6
0
5.0
05874-
021
VCP (V)
I CP
(
mA)
4
2
0
–2
–4
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
Figure 10. Charge Pump Output Characteristics, Pump Up and Pump Down
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