- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358887 > LMX2377USLEX (NATIONAL SEMICONDUCTOR CORP) POSITIONER PDF資料下載
參數(shù)資料
| 型號： | LMX2377USLEX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | POSITIONER |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 2500 MHz, PQCC20 |
| 封裝： | PLASTIC, UTCSP-20 |
| 文件頁數(shù)： | 28/44頁 |
| 文件大?。?/td> | 3181K |
| 代理商： | LMX2377USLEX |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁當前第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
Test Setups
(Continued)
LMX2377U OSC
in
Sensitivity Test Setup
20022641
The block diagram above illustrates the setup required to
measure the LMX2377U device’s OSC
buffer sensitivity
level. The same setup is used for the LMX2370TMEB/
LMX2370SLEEB Evaluation Boards. This setup is similar to
the f
sensitivity setup except that the signal generator is
now connected to the OSC
pin and both f
pins are tied to
V
. The 51
shunt resistor matches the OSC
input to the
signal generator. The R counter is typically set to 1000, i.e.
Main R_CNTR Word = 1000 or Aux R_CNTR Word = 1000.
The reference divider output is routed to the F
o
LD pin by
selecting the
Main PLL R Divider Output
word (F
LD Word
= 2 or 10) or the
Aux PLL R Divider Output
word (F
LD
Word = 1 or 9) in Code Loader. Similarly, a Universal
Counter is connected to the F
LD pin and is tied to the 10
MHz reference output from the signal generator. The output
of the reference divider is monitored and should be equal to
OSC
in
/ Main R_CNTR or OSC
in
/ Aux R_CNTR.
Again, V
is swept from 2.7V to 5.5V. The MICROWIRE
power supply, Vμc, is tied to V
. The OSC
input frequency
and voltage level are then swept with the signal generator.
The measurements are repeated at different temperatures,
namely T
= -40C, +25C, and +85C. Sensitivity is reached
when the frequency error of the divided input signal is
greater than or equal to 1 Hz.
L
www.national.com
28
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMX2377U | PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2471 | 3.6 GHz Delta-Sigma Fractional-N PLL with 1.7 GHz Integer-N PLL |
| LMX2502LQ1635 | PLLatinum⑩ Frequency Synthesizer System with Integrated VCO |
| LMX2502LQX1635 | PLLatinum⑩ Frequency Synthesizer System with Integrated VCO |
| LMX2502 | PLLatinum⑩ Frequency Synthesizer System with Integrated VCO |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2377UTM | 功能描述:IC FREQ SYNTH DUAL 20TSSOP RoHS:否 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:PLLatinum™ 標準包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時鐘 輸出:時鐘 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:* 供應商設(shè)備封裝:* 包裝:* |
| LMX2377UTMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2410QM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RF/Baseband Circuit |
| LMX2411 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Baseband Processor for Radio Communications |
| LMX2411M | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RF/Baseband Circuit |
發(fā)布緊急采購，3分鐘左右您將得到回復。