8 GHz fractionaL-n PLL For price, deli" />
參數(shù)資料
型號: HMC704LP4E
廠商: Hittite Microwave Corporation
文件頁數(shù): 19/44頁
文件大小: 0K
描述: IC FRACT-N PLL 16BIT 24QFN
標(biāo)準(zhǔn)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(yīng)商設(shè)備封裝: 24-QFN 裸露焊盤(4x4)
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: 1127-1066-6
p
ll
s
-
s
M
T
5 - 26
HMC704LP4E
v03.1211
8 GHz fractionaL-n PLL
For price, delivery, and to place orders: Hittite Microwave Corporation,20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VCO Path
Ref path
UP
DN
Loop Filter
PD
0-2.54mA
Figure 34. Charge Pump Gain and Offset Control - Reg09h
UP
7
0-635uA
5uAsteps
Offset
UP Pump Gain
DN Pump Gain
20uA steps
0-2.54mA
20uA steps
DN
0-635uA
5uAsteps
Offset
7
frequency tuning
The HMC704LP4E Fractional-N PLL can operate in either integer mode, or 3 different fractional modes.
Integer Mode:
Delta sigma modulator is disabled., “Reg 06h”[11]=0, “Reg 06h”[7]=1
Fractional Modes:
delta sigma modulator is enabled., “Reg 06h”11]=1, “Reg 06h”[7]=0
Mode A: provides better phase noise performance inside the loop bandwidth, worse outside;
Mode B : higher phase noise inside the loop bandwidth, better outside;
Exact Frequency Mode: Must be in Mode B. Provides zero frequency error;
Frequency programming and mode control is described below.
Frequency
of VCO
[
]
24
22
2
dd
xtal
frac
vco
frac
f
N
f
N
ff
RR
=
+=
+
int
where
Nint
integer division ratio, “Reg 03h”,
Integer Mode : an integer number between 16 and 219-1
Fractional Mode : an integer number between 20 and 219-5
Nfrac
fractional part, a number from 0 to 224-1, “Reg 04h”
d
Divide by 2 for operation > 4GHz, “Reg 08h”[19] = 1, < 4GHz = 0
R
Reference path division ratio, a number from 1 to 214 , “Reg 02h”
fxtal
Frequency of the reference oscillator input
fPD
PD operating frequency, fxtal/R
As an example for fractional operation at 2.3GHz + 2.98Hz:
fxtal
= 50MHz
R
= 1
fref
= 50MHz
Nint= 46
Nfrac = 1
d= 0
66
0
24
50 10
50 10 1
2
46
2.3
2.98
1
1 2
vco
f
GHz
Hz
×
=
+
=
+
(EQ 6)
(EQ 7)
相關(guān)PDF資料
PDF描述
HMC830LP6GE IC FRACT-N PLL W/VCO 40QFN
HMP8117CNZ IC VIDEO DECODER NTSC/PAL 80PQFP
HMP8156ACNZ IC VIDEO ENCODER NTSC/PAL 64MQFP
HSP45102SC-40Z IC OSC NCO 40MHZ 28-SOIC
HSP45106JC-33Z IC OSC NCO 33MHZ 84-PLCC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HMC704LP4ETR 制造商:Hittite Microwave Corp 功能描述:IC FRACT-N PLL 16BIT 24QFN
HMC705LP4 制造商:HITTITE 制造商全稱:Hittite Microwave Corporation 功能描述:6.5 GHz PROGRAMMABLE DIVIDER (N = 1 - 17)
HMC705LP4E 制造商:Hittite Microwave Corp 功能描述:IC DIVIDER HBT PROGR 24-QFN
HMC705LP4ETR 功能描述:IC DIVIDER HBT PROGR 24QFN 制造商:analog devices inc. 系列:- 包裝:剪切帶(CT) 零件狀態(tài):在售 功能:分頻器 頻率:100MHz ~ 6.5GHz RF 類型:- 輔助屬性:- 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商器件封裝:24-QFN(4x4) 標(biāo)準(zhǔn)包裝:1
hmc706lc3c 制造商:Hittite Microwave Corp 功能描述:IC CONV NRZ-RZ 13GBPS 16SMD