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參數(shù)資料
| 型號(hào)： | LMX2335LMX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 1100 MHz, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SOP-16 |
| 文件頁數(shù)： | 9/24頁 |
| 文件大?。?/td> | 631K |
| 代理商： | LMX2335LMX |
Typical Application Example
01280711
Operational Notes:
*
VCO is assumed AC coupled.
**
R
IN increases impedance so that VCO output power is provided to the load rather than the PLL. Typical values are 10
to
200
depending on the VCO power level. f
IN RF impedance ranges from 40
to 100.f
IN IF impedances are higher.
***
50
termination is often used on test boards to allow use of external reference oscillator. For most typical products a CMOS
clock is used and no terminating resistor is required. OSC
inmay be AC or DC coupled. AC coupling is recommended
because the input circuit provides its own bias. (See Figure below).
****
R2 configured F
oLD for use in FastLock mode.
***** Adding RC filters to the V
CC lines is recommended to reduce loop-to-loop noise coupling.
01280712
Application Hints:
Proper use of grounds and bypass capacitors is essential to achieve a high level of performance. Crosstalk between pins can be reduced by careful board
layout.
This is an electrostatic sensitive device. It should be handled only at static free work stations.
LMX2335L/LMX2336L
www.national.com
17
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