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參數(shù)資料
| 型號： | LMX2335USLBX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 1200 MHz, PQCC16 |
| 封裝： | PLASTIC, CSP-16 |
| 文件頁數(shù)： | 30/48頁 |
| 文件大小： | 3127K |
| 代理商： | LMX2335USLBX |
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Test Setups
(Continued)
LMX2335U and LMX2336U OSC
in
Sensitivity Test Setup
10136741
The block diagram above illustrates the setup required to
measure the LMX2336U device’s OSC
buffer sensitivity
level. The same setup is used for the LMX2336TMEB/
LMX2336SLEEB 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.
RF1 R_CNTR Word = 1000 or RF2 R_CNTR Word = 1000.
The reference divider output is routed to the F
o
LD pin by
selecting the
RF1 PLL R Divider Output
word (F
LD Word
= 2 or 10) or the
RF2 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
/ RF1 R_CNTR or OSC
in
/ RF2 R_CNTR.
Again, V
is swept from 2.7V to 5.5V. The OSC
input
frequency and voltage level are then swept with the signal
generator. The measurements are repeated at different tem-
peratures, 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.
The LMX2335U OSC
sensitivity test setup is very much
similar to the above test setup.
L
www.national.com
30
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMX2335UTM | PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2335U | PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2336 | PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2336LSLB | PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2336LTM | PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2335UTM | 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 |
| LMX2335UTM/NOPB | 功能描述:IC FREQ SYNTHESIZER DUAL 16TSSOP 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:PLLatinum™ 標(biāo)準(zhǔn)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(yīng)商設(shè)備封裝:* 包裝:* |
| LMX2335UTMX | 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 |
| LMX2336 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2336 WAF | 制造商:Texas Instruments 功能描述: |
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