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參數(shù)資料
| 型號： | LMX2305TMX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | PLLatinumTM 550 MHz Frequency Synthesizer for RF Personal Communications |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 550 MHz, PDSO20 |
| 封裝： | 0.173 INCH, PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 228K |
| 代理商： | LMX2305TMX |
TL/W/12459
L
f
PRELIMINARY
August 1996
LMX2305
PLLatinum
TM
550 MHz Frequency Synthesizer
for RF Personal Communications
General Description
The LMX2305 is a high performance frequency synthesizer
with an integrated prescaler designed for RF operation up to
550 MHz. It is fabricated using National’s ABiC IV BiCMOS
process.
The LMX2305 contains a dual modulus prescaler which can
select either a 64/65 or a 128/129 divide ratio at input fre-
quencies of up to 550 MHz. LMX2305, which employs the
digital phase lock loop technique, combined with a high
quality reference oscillator and a loop filter, provides the
tuning voltage for the voltage controlled oscillator to gener-
ate a very stable, low noise local oscillator signal.
Serial data is transferred into the LMX2305 via a three line
MICROWIRE
TM
interface (Data, Enable, Clock). Supply volt-
age can range from 2.65V to 5.5V. The LMX2305 features
very low current consumption, typically 4.0 mA at 2.75V.
The LMX2305 is available in a TSSOP 20-pin surface mount
plastic package.
Features
Y
RF operation up to 550 MHz
Y
2.65V to 5.5V operation
Y
Low current consumption:
I
CC
e
4.0 mA (typ) at V
CC
e
2.75V
Y
Dual modulus prescaler: 64/65 or 128/129
Y
Internal balanced, low leakage charge pump
Y
Small-outline, plastic, surface mount TSSOP,
0.173
×
wide package
Applications
Y
Analog Cellular telephone systems
(AMPS, ETACS, NMT)
Y
Portable wireless communications
(PCS/PCN, cordless)
Y
Wireless local area networks (WLANs)
Y
Other wireless communication systems
Y
Pagers
Block Diagram
TL/W/12459–1
TRI-STATE
é
is a registered trademark of National Semiconductor Corporation.
MICROWIRE
TM
and PLLatinum
TM
are trademarks of National Semiconductor Corporation.
C
1996 National Semiconductor Corporation
RRD-B30M126/Printed in U. S. A.
http://www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMX2305 | PLLatinum 550 MHz Frequency Synthesizer for RF Personal Communications(PLLatinum技術(shù)用于射頻個人通訊的550MHZ頻率合成器) |
| LMX2354TM | PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer |
| LMX2354 | PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer |
| LMX2355TM | PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer |
| LMX2354SLB | PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2305WG/B | 制造商:Rochester Electronics LLC 功能描述: |
| LMX2306 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Low Power Frequency Synthesizer for RF Personal Communications |
| LMX2306_04 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Low Power Frequency Synthesizer for RF Personal Communications |
| LMX2306LBX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FREQUENCY SYNTHESIZER|BICMOS|LLCC|16PIN|PLASTIC |
| LMX2306SLBX | 制造商:Texas Instruments 功能描述:PLL Frequency Synthesizer Single 25MHz to 550MHz 16-Pin LAM CSP T/R |
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