Datasheet > LMX2354SLDX/NOPB

LMX2354SLDX/NOPB

更新时间： 2023-03-15 00:00:00

品牌	Logo	应用领域
德州仪器 - TI		信息通信管理
页数	文件大小	规格书
23页	385K
描述
IC,FREQUENCY SYNTHESIZER,BICMOS,LLCC,24PIN,PLASTIC

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技术参数
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LMX2354SLDX/NOPB 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	QCCN, LCC24,.17X.14,20	Reach Compliance Code：	compliant
风险等级：	5.84	JESD-30 代码：	R-PQCC-N24
湿度敏感等级：	1	端子数量：	24
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCN
封装等效代码：	LCC24,.17X.14,20	封装形状：	RECTANGULAR
封装形式：	CHIP CARRIER	电源：	3/5 V
认证状态：	Not Qualified	子类别：	PLL or Frequency Synthesis Circuits
最大供电电流 (Isup)：	8.5 mA	表面贴装：	YES
技术：	BICMOS	温度等级：	INDUSTRIAL
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	QUAD

LMX2354SLDX/NOPB 数据手册

August 2001

LMX2354

PLLatinum Fractional N RF/ Integer N IF Dual Low Power

Frequency Synthesizer

LMX2354 2.5 GHz/550 MHz

General Description

Features

n Pin compatible/functional equivalent to the LMX2350

n Enhanced Low Noise Fractional Engine

n 2.7V to 5.5V operation

The LMX2354 is part of a family of monolithic integrated

fractional N/Integer N frequency synthesizers designed to be

used in a local oscillator subsystem for a radio transceiver. It

is fabricated using National’s 0.5 µ ABiC V silicon BiCMOS

process. The LMX2354 contains quadruple modulus pres-

calers along with modulo 15 or 16 fractional compensation

circuitry in the RF divider. The LMX2354 provides a continu-

ous divide ratio of 80 to 32767 in 16/17/20/21

(1.2 GHz–2.5 GHz) fractional mode and 40 to 16383 in

8/9/12/13 (550 MHz–1.2 GHz) fractional mode. The IF cir-

cuitry for the LMX2354 contains an 8/9 prescaler, and is fully

programmable. Using a fractional N phase locked loop tech-

nique, the LMX2354 can generate very stable low noise

control signals for UHF and VHF voltage controlled oscilla-

tors (VCOs).

n Low current consumption

LMX2354: I_CC= 7 mA typical at 3V

n Programmable or logical power down mode:

I_CC= 5 µA typical at 3V

n Modulo 15 or 16 fractional RF N divider supports ratios

of 1, 2, 3, 4, 5, 8, 15, or 16

n Programmable charge pump current levels

RF 100 µA to 1.6 mA in 100 µA steps

IF 100 µA or 800 µA

n Digital filtered lock detect

n Available in 24-pin TSSOP and 24-pin CSP

For the RF PLL, a highly flexible 16 level programmable

charge pump supplies output current magnitudes from 100

µA to 1.6 mA. Two uncommitted CMOS outputs can be used

to provide external control signals, or configured to FastLock

mode. Serial data is transferred into the LMX2354 via a three

wire interface (Data, LE, Clock). Supply voltage can range

from 2.7V to 5.5V. The LMX2354 family features very low

current consumption; typically LMX2354 (2.5 GHz) — 7.0

mA. The LMX2354 are available in a 24-pin TSSOP surface

mount plastic package and 24-pin CSP.

Applications

n Portable wireless communications (PCS/PCN, cordless)

n Dual mode cellular telephone systems

n Zero blind slot TDMA systems

n Spread spectrum communication systems (CDMA)

n Cable TV Tuners (CATV)

Functional Block Diagram

20004801

DS200048

www.national.com

12 3 4 5 6 7...23

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与LMX2354SLDX/NOPB相关器件

型号	品牌	获取价格	描述	数据表
LMX2354SLEX	ROCHESTER	获取价格	PLL FREQUENCY SYNTHESIZER, 2600 MHz, CQCC24, CSP-24
LMX2354SLEX	NSC	获取价格	IC PLL FREQUENCY SYNTHESIZER, 2600 MHz, CQCC24, CSP-24, PLL or Frequency Synthesis Circuit
LMX2354SLEX/NOPB	TI	获取价格	IC,FREQUENCY SYNTHESIZER,BICMOS,LLCC,24PIN,PLASTIC
LMX2354TM	NSC	获取价格	PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer
LMX2354TM/NOPB	TI	获取价格	PLL FREQUENCY SYNTHESIZER, 2500MHz, PDSO24, TSSOP-24
LMX2354TM/NOPB	ROCHESTER	获取价格	PLL FREQUENCY SYNTHESIZER, 2500MHz, PDSO24, TSSOP-24
LMX2354TMX/NOPB	TI	获取价格	PLL FREQUENCY SYNTHESIZER, 2500MHz, PDSO24, TSSOP-24
LMX2355SLB	NSC	获取价格	PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer
LMX2355TM	NSC	获取价格	PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer
LMX2360TM	ROCHESTER	获取价格	PLL Frequency Synthesizer, BICMOS, PDSO24, PLASTIC, TSSOP-24

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