8 GHz fractional syntHesizer For price," />
參數(shù)資料
型號: HMC703LP4E
廠商: Hittite Microwave Corporation
文件頁數(shù): 55/58頁
文件大?。?/td> 0K
描述: IC FRACT-N PLL W/SWEEPR 24QFN
標準包裝: 1
類型: 整數(shù) N/小數(shù) N 分頻
PLL:
輸入: CMOS
輸出: CMOS
電路數(shù): 1
比率 - 輸入:輸出: 1:1
差分 - 輸入:輸出: 是/無
頻率 - 最大: 8GHz
除法器/乘法器: 是/無
電源電壓: 3.3V,5V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-VQFN 裸露焊盤
供應商設備封裝: 24-QFN 裸露焊盤(4x4)
包裝: 標準包裝
其它名稱: 1127-1065-6
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6 - 6
HMC703LP4E
v02.0813
8 GHz fractional syntHesizer
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 978-250-3373 fax Order On-line at www.hittite.com
Application Support: pll@hittite.com
figure 16. rf input limits [6]
figure 17. Modelled vs. Measured Phase
noise, integer Mode HiK at 8 GHz [7]
figure 18. Modelled vs. Measured Phase
noise, fractional Mode B, HiK at ~ 8 GHz [8]
figure 13. typical Phase noise & spur
Performance at 8 GHz + 200 kHz[3]
-180
-160
-140
-120
-100
-80
-60
10
2
10
3
10
4
10
5
10
6
10
7
10
8
PH
ASE
N
O
ISE
(d
Bc
/H
z
)
OFFSET(Hz)
-180
-160
-140
-120
-100
-80
10
2
10
3
10
4
10
5
10
6
10
7
10
8
PH
ASE
N
O
ISE
(d
Bc
/H
z
)
OFFSET (Hz)
-90
-80
-70
-60
-50
-40
-30
-20
-800
-600
-400
-200
0
200
400
600
800
20 kHz Offset Spur
10 kHz Offset Spur
SPU
R
M
AG
N
IT
U
D
E
(d
Bc
)
CP OFFSET CURRENT (uA)
Recommended
Operating
Range
[3] Output frequency = 8 GHz + 200 kHz using HMC508LP5E VCO, Reference Input = 100 MHz, PD frequency = 100 MHz, CP current = 2.5 mA,
Fractional Mode B, 20 kHz bandwidth Loop Filter. spur at 200kHz due to RF signal at 8GHz + 200kHz, spur at 100kHz due to prescaler input at
4GHz+100kHz. Reference feedthrough spur at 100 MHz offset.
[4] Exact Frequency Mode channel spacing 100 kHz, Fractional N, Rfout = 8013.6 MHz using HMC508LP5E VCO, Reference Input = 100 MHz, PD
frequency = 100 MHz, Prescaler divide-by-2 selected. 20 kHz Loop Filter bandwidth, reference feedthrough spur at 100 MHz offset.
[5] Tuned to 8 GHz + 20 kHz, Prescaler at 4 GHz + 10 kHz, Loop bandwidth >> 20 kHz, Reference Frequency 50 MHz. Offset polarity should be
positive for inverting configurations and negative otherwise.
[6] Low frequency minimum power levels not characterized. Low frequency limitation is only a function of external AC coupling capacitance signal
slew rate.
[7] HiK integer mode measured at 8 GHz, Prescalar at 4 GHz, 50 MHz reference frequency.
[8] Active Fractional B Mode (Prescalar @ 4 GHz + 2.5 kHz), Reference Frequency 50 MHz.
-40
-30
-20
-10
0
10
20
30
0
2000
4000
6000
8000
10000
IN
PU
T
PO
W
ER
(d
Bm
)
RF INPUT FREQUENCY AT PRESCALAR (MHz)
RECOMMENDED OPERATING RANGE
No Divider
Divide By 2
figure 15. integer Boundary spur at
8 GHz + 20 kHz vs. charge Pump offset[5]
figure 14. fractional Performance, exact
frequency Mode on at 8013.6 MHz [4]
-180
-160
-140
-120
-100
-80
10
2
10
3
10
4
10
5
10
6
10
7
10
8
PH
ASE
N
O
ISE
(d
Bc
/H
z
)
OFFSET (Hz)
Modelled PLL Floor
Total Noise Simulated Using
Hittite PLL Design Software
Measured Total Noise
INTEGRATED RMS JITTER = 44.2 fs
100 Hz to 100 MHz
-180
-160
-140
-120
-100
-80
10
2
10
3
10
4
10
5
10
6
10
7
10
8
PH
ASE
N
O
ISE
(d
Bc
/H
z
)
OFFSET (Hz)
Modelled PLL Floor
Total Noise Simulated Using
Hittite PLL Design Software
Measured Total Noise
INTEGRATED RMS JITTER = 36.1 fs
100 Hz to 100 MHz
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