Datasheet > LMX2337TM

LMX2337TM

更新时间： 2024-02-07 01:45:33

品牌	Logo	应用领域
美国国家半导体 - NSC		射频个人通信
页数	文件大小	规格书
18页	396K
描述
PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications

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技术参数
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LMX2337TM 技术参数

生命周期：	Obsolete	零件包装代码：	TSSOP
包装说明：	,	针数：	16
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.65	模拟集成电路 - 其他类型：	PLL FREQUENCY SYNTHESIZER
Base Number Matches：	1

LMX2337TM 数据手册

September 1996

LMX2335/LMX2336/LMX2337

™

PLLatinum Dual Frequency Synthesizer for RF

Personal Communications

both a JEDEC SO and TSSOP 16-pin surface mount plastic

package. The LMX2336 is available in a TSSOP 20-pin sur-

face mount plastic package.

LMX2335

LMX2336

LMX2337

1.1 GHz/1.1 GHz

2.0 GHz/1.1 GHz

550 MHz/550 MHz

Features

n 2.7V to 5.5V operation

n Low current consumption

n Selectable powerdown mode:

General Description

The LMX2335, LMX2336 and LMX2337 are monolithic, inte-

grated dual frequency synthesizers, including two high fre-

quency prescalers, and are designed for applications requir-

ing two RF phase-lock loops. They are fabricated using

National’s ABiC IV silicon BiCMOS process.

I_CC1 µA (typ)

n Dual modulus prescaler: 64/65 or 128/129

n Selectable charge pump TRI-STATE^®mode

n Selectable charge pump current levels

The LMX2335/36/37 contains two dual modulus prescalers.

A 64/65 or a 128/129 prescaler can be selected for each RF

synthesizer. A second reference divider chain is included in

the IC for improved system noise. LMX2335/36/37, which

employ a digital phase locked loop technique, combined with

a high quality reference oscillator and loop filters, provide the

tuning voltages for voltage controlled oscillators to generate

very stable low noise RF local oscillator signals.

™

n Selectable FastLock mode

Applications

n Cellular telephone systems (AMPS, ETACS, RCR-27)

n Cordless telephone systems (DECT, ISM, PHS, CT-1+)

n Personal Communication Systems

(DCS-1800, PCN-1900)

Serial data is transferred into the LMX2335/36/37 via a three

wire interface (Data, Enable, Clock). Supply voltage can

range from 2.7V to 5.5V. The LMX2335/36/37 feature very

low current consumption; LMX2335/37 −10 mA at 3V,

LMX2336 −13 mA at 3V. The LMX2335/37 are available in

n Dual Mode PCS phones

n CATV

n Other wireless communication systems

Functional Block Diagram

DS012332-1

TRI-STATE^®is a registered trademark of National Semiconductor Corporation.

™

Fastlock , MICROWIRE and PLLatinum are trademarks of National Semiconductor Corporation.

DS012332

www.national.com

12 3 4 5 6 7...18

中文翻译

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与LMX2337TM相关器件

型号	品牌	获取价格	描述	数据表
LMX233XA	NSC	获取价格	PLLatinum⑩ Dual Frequency Synthesizer for RF
LMX2346	NSC	获取价格	PLLatinum⑩ Frequency Synthesizer for RF Perso
LMX2346SLBX	NSC	获取价格	PLLatinum⑩ Frequency Synthesizer for RF Perso
LMX2346TM	NSC	获取价格	PLLatinum⑩ Frequency Synthesizer for RF Perso
LMX2346TM/NOPB	TI	获取价格	暂无描述
LMX2346TMX	NSC	获取价格	PLLatinum⑩ Frequency Synthesizer for RF Perso
LMX2347	NSC	获取价格	PLLatinum⑩ Frequency Synthesizer for RF Perso
LMX2347MDC	TI	获取价格	IC,FREQUENCY SYNTHESIZER,BICMOS,DIE
LMX2347MWC	TI	获取价格	IC,FREQUENCY SYNTHESIZER,BICMOS,WAFER
LMX2347SLBX	NSC	获取价格	PLLatinum⑩ Frequency Synthesizer for RF Perso

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