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參數(shù)資料
| 型號： | LMX2353TM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | PLLatinum⑩ Fractional N Single 2.5 GHz Frequency Synthesizer |
| 中文描述： | PHASE LOCKED LOOP, 2500 MHz, PDSO16 |
| 封裝： | PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 210K |
| 代理商： | LMX2353TM |
LMX2353
PLLatinum
Fractional N Single 2.5 GHz Frequency
Synthesizer
General Description
The LMX2353 is a monolithic integrated fractional N fre-
quency synthesizer, designed to be used in a local oscillator
subsystem for a radio transceiver. It is fabricated using Na-
tional’s 0.5μ ABiC V silicon BiCMOS process. The LMX2353
contains dual modulus prescalers along with modulo 15 or
16 fractional compensation circuitry in the N divider. A 16/17
or 32/33 prescale ratio can be selected for the LMX2353. Us-
ing a fractional N phase locked loop technique, the LMX2353
can generate very stable low noise control signals for UHF
and VHF voltage controlled oscillators (VCO’s).
The LMX2353 has a highly flexible 16 level programmable
charge pump supplies output current magnitudes from 100
μAto 1.6 mA. Serial data is transferred into the LMX2353 via
a three wire interface (Data, LE, Clock). Supply voltage can
range from 2.7V to 5.5V. The LMX2353 features very low
current consumption; typically 4.5 mA at 3.0V. The LMX2353
is available in a 16-pin TSSOP or a 16-pad CSP surface
mount plastic package.
Features
n
2.7V – 5.5V operation
n
Low Current Consumption
I
CC
= 4.5 mA typ
@
V
CC
= 3.0V
n
Programmable or Logical Power Down Mode
I
CC
= 5 μA typ
@
V
CC
= 3.0V
n
Modulo 15 or 16 fractional N divider
Supports ratios of 1, 2, 3, 4, 5, 8, 15, or 16
n
Programmable charge pump current levels
100 μA to 1.6 mA in 100 μA steps
n
Digital Filtered Lock Detect
Applications
n
Portable wireless communications (PCS/PCN, cordless)
n
Zero blind slot TDMA systems
n
Cellular and Cordless telephone systems
n
Spread spectrum communication systems (CDMA)
Functional Block Diagram
MICROWIRE
and PLLatinum
are trademarks of National Semiconductor Corporation.
TRI-STATE
is a registered trademark of National Semiconductor Corporation.
DS101124-1
PRELIMINARY
June 1999
L
1999 National Semiconductor Corporation
DS101124
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LMX2353SLBX | PLLatinum⑩ Fractional N Single 2.5 GHz Frequency Synthesizer |
| LMX2353 | PLLatinum⑩ Fractional N Single 2.5 GHz Frequency Synthesizer |
| LMX2372 | PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2372SLBX | PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2372TMX | PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2353TM/NOPB | 功能描述:IC FREQ SYNTH 2.5GHZ 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:* |
| LMX2353TMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Fractional N Single 2.5 GHz Frequency Synthesizer |
| LMX2353TMX/NOPB | 功能描述:IC FREQ SYNTH 2.5GHZ 16-TSSOP 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:* |
| LMX2354 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer |
| LMX2354SLB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer |
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