LMX2323 Datasheet

IC型號：
LMX2323
PDF描述：
PLLatinum? 2.0 GHz Frequency Synthesizer for RF Personal Com...
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189.65KB
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12頁
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LMX2323 PLLatinum 2.0 GHz Frequency Synthesizer for RF Personal Communications

October 2000

LMX2323

PLLatinum

鈩?/div>

2.0 GHz Frequency Synthesizer for RF

Personal Communications

General Description

The LMX2323 is a high performance frequency synthesizer

with integrated 32/33 dual modulus prescaler designed for

RF operation up to 2.0 GHz. Using a proprietary digital

phase locked loop technique, the LMX2323鈥檚 linear phase

detector characteristics can generate very stable, low noise

control signals for UHF and VHF voltage controlled oscilla-

tors.

Serial data is transferred into the LMX2323 via a three-line

MICROWIRE

鈩?/div>

interface (Data, LE, Clock). Supply voltage

range is from 2.7V to 5.5V. The LMX2323 features very low

curent consumption, typically 3.5mA at 3V. The charge pump

provides 4 mA output current.

The LMX2323 is manufactured using National鈥檚 ABiC V

BiCMOS process and is packaged in a 16-pin TSSOP.

Features

RF operation up to 2.0 GHz

2.7V to 5.5V operation

Low current consumption: Icc = 3.5mA (typ) at

Vcc=3.0V

Digital Lock Detect

Dual modulus prescaler: 32/33

Internal balanced, low leakage charge pump

Applications

Cellular telephone systems (GSM, NADC, CDMA, PDC,

PHS)

Personal wireless communications (DCS-1800, DECT,

CT-1+)

Wireless local area networks (WLANs)

DCS/PCS infrastructure equipment

Other wireless communication systems

Functional Block Diagram

DS101362-1

TRI-STATE

廬

is a registered trademark of National Semiconductor Corporation.

MICROWIRE

鈩?/div>

and PLLatinum

鈩?/div>

are trademarks of National Semiconductor Corporation.

漏 2000 National Semiconductor Corporation

DS101362

www.national.com

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