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參數(shù)資料
| 型號： | LMX2331UTM/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 2000 MHz, PDSO20 |
| 封裝： | 0.173 INCH, PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 28/49頁 |
| 文件大?。?/td> | 4568K |
| 代理商： | LMX2331UTM/NOPB |
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Test Setups (Continued)
LMX233xU OSC
in Sensitivity Test Setup
10136641
The block diagram above illustrates the setup required to
measure the LMX233xU device’s OSC
in buffer sensitivity
level. The same setup is used for the LMX2330TMEB/
LMX2330SLEEB Evaluation Boards. This setup is similar to
the f
IN sensitivity setup except that the signal generator is
now connected to the OSC
in pin and both fIN pins are tied to
V
CC. The 51
shunt resistor matches the OSC
in input to the
signal generator. The R counter is typically set to 1000, i.e.
RF R_CNTR Word = 1000 or IF R_CNTR Word = 1000. The
reference divider output is routed to the F
oLD pin by select-
ing the RF PLL R Divider Output word (F
oLD Word = 2 or
10) or the IF PLL R Divider Output word (F
oLD Word = 1 or
9) in Code Loader. Similarly, a Universal Counter is con-
nected to the F
oLD 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/RF
R_CNTR or OSC
in/ IF R_CNTR.
Again, V
CC is swept from 2.7V to 5.5V. The OSCin input
frequency and voltage level are then swept with the signal
generator. The measurements are repeated at different tem-
peratures, namely T
A = -40C, +25C, and +85C. Sensitivity
is reached when the frequency error of the divided input
signal is greater than or equal to 1 Hz.
LMX2330U/LMX2331U/LMX2332U
www.national.com
34
相關PDF資料 |
PDF描述 |
|---|---|
| LMX2331USLEX | PLL FREQUENCY SYNTHESIZER, 2000 MHz, PQCC24 |
| LMX2330UTMX/NOPB | PLL FREQUENCY SYNTHESIZER, 2500 MHz, PDSO20 |
| LMX2335LTMX/NOPB | PLL FREQUENCY SYNTHESIZER, 1100 MHz, PDSO16 |
| LMX2335LMX | PLL FREQUENCY SYNTHESIZER, 1100 MHz, PDSO16 |
| LMX2335LTM/NOPB | PLL FREQUENCY SYNTHESIZER, 1100 MHz, PDSO16 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2331UTMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2332 WAF | 制造商:Texas Instruments 功能描述: |
| LMX2332A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2332ATM | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LMX2332ATMX | 功能描述:IC FREQ SYNTH DUAL 20-TSSOP 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:* 供應商設備封裝:* 包裝:* |
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