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參數(shù)資料
| 型號(hào)： | LMX2331A |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| 中文描述： | PLLatinum⑩雙頻率合成射頻個(gè)人通信 |
| 文件頁數(shù)： | 14/17頁 |
| 文件大?。?/td> | 392K |
| 代理商： | LMX2331A |
Typical Application Example
DS012331-19
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
may be AC or DC coupled. AC coupling is recom-
mended because the input circuit provides its own bias. (See Figure below)
****
Adding RC filters to the V
CC
line is recommended to reduce loop-to-loop noise coupling.
DS012331-20
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
This is an electrostatic sensitive device. It should be handled only at static free work stations.
www.national.com
14
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2331ATM | 制造商:Texas Instruments 功能描述: |
| LMX2331ATMX | 功能描述:IC FREQ SYNTH DUAL 20-TSSOP RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時(shí)鐘 輸出:時(shí)鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
| LMX2331L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LMX2331LSLB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2331LSLBX | 制造商:Texas Instruments 功能描述: |
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