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參數資料
| 型號： | LMX3305 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Triple Phase Locked Loop for RF Personal Communications |
| 中文描述： | 三鎖相環(huán)射頻個人通信 |
| 文件頁數： | 19/24頁 |
| 文件大?。?/td> | 213K |
| 代理商： | LMX3305 |
2.0 Programming Description
(Continued)
2.5.5 RF_Icpo (RF_R[4]-[3])
These two bits set the charge pump gain of the RF PLL. The user is able to set the charge pump gain during the acquisition phase
of the fastlock mode to 4X, 7X or 9X.
Charge Pump
Gain
100 μA
400 μA
700 μA
900 μA
RF_R[4]
RF_R[3]
0
0
1
1
0
1
0
1
2.5.6 RF_PD_POL (RF_R[2])
This bit sets the polarity of the RF phase detector. It is set to one when RF VCO characteristics are positive. When RF VCO fre-
quency decreases with increasing control voltage, RF_PD_POL should be set to zero.
2.5.7 RF_RST (RF_R[1])
This bit will reset the RF R and N counters when it is set to one. For normal operation, RF_RST should be set to zero.
2.5.8 V2X (RF_R[0])
V2X when set high enables the voltage doubler for the RF charge pump supply.
L
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LMX3305_09 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Triple Phase Locked Loop for RF Personal Communications |
| LMX3305SLBX | 功能描述:IC PHASE LOCK LOOP TRPL 24LAMCSP 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:- 標準包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時鐘 輸出:時鐘 電路數: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:* |
| LMX331 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:General-Purpose, Low-Voltage, Single/Dual/Quad, Tiny-Pack Comparators |
| LMX331_11 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:General-Purpose, Low-Voltage, Single/Dual/Quad, Tiny-Pack Comparators |
| LMX331AUK | 制造商:Maxim Integrated Products 功能描述:- Cut Tape Product |
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