- 您現在的位置：買賣IC網 > PDF目錄361044 > LMX2434SLEX (NATIONAL SEMICONDUCTOR CORP) PLLatinum Dual High Frequency Synthesizer for RF Personal Communications PDF資料下載
參數資料
| 型號： | LMX2434SLEX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | PLLatinum Dual High Frequency Synthesizer for RF Personal Communications |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 5000 MHz, PQCC20 |
| 封裝： | PLASTIC, UTCSP-20 |
| 文件頁數： | 31/49頁 |
| 文件大小： | 943K |
| 代理商： | LMX2434SLEX |
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頁第28頁第29頁第30頁當前第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頁第45頁第46頁第47頁第48頁第49頁
LMX243x OSCin Sensitivity Test Setup
20053590
The block diagram above illustrates the setup required to
measure the LMX243x device’s OSCin buffer sensitivity
level. The same setup is used for the LMX2430TM Evalua-
tion Board. This setup is similar to the FinRF sensitivity setup
except that the signal generator is now connected to the
OSCin pin and both Fin pins are tied to Vcc. The 51
shunt
resistor matches the OSCin input to the signal generator.
The R counter is typically set to 1000, i.e. RF_R word = 1000
or IF_R word = 1000. The reference divider output is routed
to the Ftest/LD pin by selecting the RF_R/ 2 Frequency word
(MUX[3:0] word = 14) or the IF_R/ 2 Frequency word
(MUX[3:0] word = 12) in CodeLoader.AUniversal Counter is
connected to the Ftest/LD pin and is used to monitor the
output frequency of the reference divider. The expected
frequency should be the signal generator frequency divided
by twice the corresponding counter value, i.e. 2000. The
factor of two comes in because the LMX243x device has an
internal /2 circuit which is used to provide a 50% duty cycle.
In a similar way, sensitivity is typically measured over fre-
quency, supply voltage and temperature. In order to perform
the measurement, the temperature, frequency, and supply
voltage is set to a fixed value and the power level (voltage
level) of the signal at OSCin is varied. Sensitivity is reached
when the frequency error of the divided input signal is
greater than or equal to 1 Hz.
L
www.national.com
31
相關PDF資料 |
PDF描述 |
|---|---|
| LMX2531LQ1570E | PLLatinum High Performance Frequency Synthesizer System with Integrated VCO |
| LMX2531 | PLLatinum High Performance Frequency Synthesizer System with Integrated VCO |
| LMX2531LQ1650E | PLLatinum High Performance Frequency Synthesizer System with Integrated VCO |
| LMX2531LQ1778E | PLLatinum High Performance Frequency Synthesizer System with Integrated VCO |
| LMX2531LQ2080E | PLLatinum High Performance Frequency Synthesizer System with Integrated VCO |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LMX2434SLEX/NOPB | 功能描述:鎖相環 - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| LMX2434TM | 制造商:Texas Instruments 功能描述:PLL Frequency Synthesizer Dual 500MHz to 5000MHz 20-Pin TSSOP Rail |
| LMX2434TM/NOPB | 功能描述:鎖相環 - PLL 5.0Ghz High Freq Dual Pll RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| LMX2434TMX | 功能描述:鎖相環 - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| LMX2434TMX/NOPB | 功能描述:鎖相環 - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
發布緊急采購，3分鐘左右您將得到回復。