參數(shù)資料
型號： ADF4212LBRUZ
廠商： Analog Devices Inc
文件頁數(shù)： 16/28頁
文件大?。?/td> 0K
描述： IC PLL FREQ SYNTHESIZER 20TSSOP
標準包裝： 75
類型： 時鐘/頻率合成器（RF/IF）
PLL： 是
輸入： CMOS，TTL
輸出： 時鐘
電路數(shù)： 1
比率 - 輸入:輸出： 3:1
差分 - 輸入:輸出： 是/是
頻率 - 最大： 2.4GHz
除法器/乘法器： 是/無
電源電壓： 2.7 V ~ 3.3 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 20-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 20-TSSOP
包裝： 管件
Data Sheet
ADF4212L
Rev. E | Page 23 of 28
WIDEBAND PLL
Many of the wireless applications for synthesizers and VCOs in
PLLs are narrow band in nature. These applications include the
various wireless standards such as GSM, DSC1800, CDMA, or
WCDMA. In each of these cases, the total tuning range for the
LO is less than 100 MHz. However, there are also wideband
applications where the LO can have up to an octave tuning
range. For example, cable television tuners have a total range
of about 400 MHz. Figure 32 shows an application where the
ADF4212L is used to control and program the Micronetics
M3500-1324. The loop filter was designed for an RF output of
2100 MHz, a loop bandwidth of 40 kHz, a PFD frequency of 1
MHz, ICP of 10 mA (2.5 mA synthesizer ICP multiplied by the gain
factor of 4), VCO KD of 80 MHz/V (sensitivity of the M3500-1324
at an output of 2100 MHz), and a phase margin of 45 degrees.
In narrow-band applications, there is generally a small variation
in output frequency (generally less than 10%) and a small variation
in VCO sensitivity over the range (typically <10%). However, in
wideband applications, both of these parameters have a much
greater variation, which changes the loop bandwidth. This, in turn,
can affect stability and lock time. By changing the programma-
ble ICP, it is possible to obtain compensation for these varying loop
conditions and to ensure that the loop is always operating close
to optimal conditions.
AD820
SPI-COMPATIBLE SERIAL BUS
LOCK
DETECT
VCC
DG
ND
RF
AG
ND
RF
DG
ND
IF
AG
ND
IF
CLK
DATA
LE
RFIN
RFOUT
MUXOUT
CPRF
VP2
VP1
ADF4212L
100pF
1000pF
51
18
REFIN
FREFIN
RSET
3.9nF
27nF
12V
130pF
100pF
470
51
GND
V_TUNE
OUT
M3500-1324
2.7k
20k
20V
3k
1k
VDD2
VP
VDD
VDD1
02774-
037
DECOUPLING CAPACITORS ON VDDx AND VPx OF THE ADF4212L, ON +VS OF THE AD820,
AND ON VCC OF THE M3500-1324 HAVE BEEN OMITTED FROM THE DIAGRAM TO AID CLARITY.
THE IF SECTION OF THE CIRCUIT HAS ALSO BEEN OMITTED TO SIMPLIFY THE SCHEMATIC.
Figure 32. Wideband PLL Circuit
相關(guān)PDF資料
PDF描述
ADF4213BCPZ-RL IC PLL FREQ SYNTHESIZER 20LFCSP
ADF4216BRUZ-RL IC PLL FREQ SYNTHESIZER 20TSSOP
ADF4218LBRUZ IC PLL FREQ SYNTHESIZER 20TSSOP
ADF4252BCPZ-R7 IC PLL FREQ SYNTHESIZER 24LFCSP
ADF4350BCPZ-RL IC SYNTH PLL VCO FN/IN 32LFCSP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADF4212LBRUZ-RL 功能描述:IC PLL FREQ SYNTHESIZER 20TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 標準包裝:1,000 系列:Precision Edge® 類型:時鐘/頻率合成器 PLL:無 輸入:CML，PECL 輸出:CML 電路數(shù):1 比率 - 輸入:輸出:2:1 差分 - 輸入:輸出:是/是 頻率 - 最大:10.7GHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤，16-MLF? 供應(yīng)商設(shè)備封裝:16-MLF?（3x3） 包裝:帶卷 (TR) 其它名稱:SY58052UMGTRSY58052UMGTR-ND
ADF4212LBRUZ-RL7 功能描述:IC PLL FREQ SYNTHESIZER 20TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 標準包裝:1,000 系列:Precision Edge® 類型:時鐘/頻率合成器 PLL:無 輸入:CML，PECL 輸出:CML 電路數(shù):1 比率 - 輸入:輸出:2:1 差分 - 輸入:輸出:是/是 頻率 - 最大:10.7GHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤，16-MLF? 供應(yīng)商設(shè)備封裝:16-MLF?（3x3） 包裝:帶卷 (TR) 其它名稱:SY58052UMGTRSY58052UMGTR-ND
ADF4213 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual RF/IF PLL Frequency Synthesizers
ADF4213BCP 制造商:Rochester Electronics LLC 功能描述:DUAL PLL 2.5/1.1 GHZ - Bulk 制造商:Analog Devices 功能描述:
ADF4213BCPZ 制造商:Analog Devices 功能描述:PLL Frequency Synthesizer Dual 20-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*