Datasheet > LMX2581_14

LMX2581_14

更新时间： 2024-11-28 02:58:27

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描述
Wideband Frequency Synthesizer

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中文翻译

获取价格

数据手册

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LMX2581_14 数据手册

LMX2581

www.ti.com

SNAS601D –AUGUST 2012–REVISED APRIL 2013

LMX2581 Wideband Frequency Synthesizer with Integrated VCO

Check for Samples: LMX2581

FEATURES

•

Programmable Output Power

General Features

Programmable Option to Use an External VCO

Low Noise VCO Divider

•

50 – 3760 MHz Operating Frequency

Low Voltage Logic Compatibility

Digital Lock Detect

•

Programmable to divide by 1 (bypass), 2, 4, 6,

8, ... , 38

-155 dBc/Hz Noise Floor

32 Pin QFN Package

High Performance PLL

TARGET APPLICATIONS

•

-229 dBc/Hz Normalized PLL Phase Noise

-120.8 dBc/Hz Normalized PLL 1/f Noise

200 MHz Maximum Phase Detector Frequency

Programmable Charge Pump Current

Broadband Multi-Core VCO

•

Wireless Infrastructure (UMTS, LTE, WiMax,

Multi-Standard Base Stations)

•

Broadband Wireless

Wireless Meter Reading

Test and Measurement

Clock Generation

•

Tuning Range: 1880 - 3760 MHz

-137 dBc/Hz Phase Noise @ 1 MHz for a 2.5

GHz Carrier

DESCRIPTION

The LMX2581 is an ultra low noise wideband frequency synthesizer which integrates a delta-sigma fractional N

PLL, a VCO with fully integrated tank circuit, and an optional frequency divider.

The LMX2581 integrates several low-noise, high precision LDOs to provide superior supply noise immunity and

more consistent performance. When combined with a high quality reference oscillator, the LMX2581 generates a

very stable, ultra low noise signal. The internal VCO can be bypassed so that an external VCO can be used.

FUNCTIONAL BLOCK DIAGRAM

Vtune

Low

Multiple

Noise

Core VCO

LDO

FLout

MUX

Fin

CPout

Charge

Pump

Comp

Output

Divider

N Divider

RFoutA

BUFEN

MUX

MUXout

RFoutB

OSCin

DATA

MUX

CLK

Serial Interface

Control

Divider

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...35

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与LMX2581_14相关器件

型号	品牌	获取价格	描述	数据表
LMX2581E	TI	获取价格	具有集成 VCO 的 3.8GHz 宽带频率合成器
LMX2581ESQE/NOPB	TI	获取价格	具有集成 VCO 的 3.8GHz 宽带频率合成器 \| RTV \| 32 \| -40 to
LMX2581ESQX/NOPB	TI	获取价格	具有集成 VCO 的 3.8GHz 宽带频率合成器 \| RTV \| 32 \| -40 to
LMX2581SQ	TI	获取价格	LMX2581 Wideband Frequency Synthesizer with Integrated VCO
LMX2581SQ/NOPB	TI	获取价格	具有集成 VCO 的 3.76GHz 宽带频率合成器 \| RTV \| 32 \| -40 t
LMX2581SQE	TI	获取价格	LMX2581 Wideband Frequency Synthesizer with Integrated VCO
LMX2581SQE/NOPB	TI	获取价格	具有集成 VCO 的 3.76GHz 宽带频率合成器 \| RTV \| 32 \| -40 t
LMX2581SQX	TI	获取价格	LMX2581 Wideband Frequency Synthesizer with Integrated VCO
LMX2581SQX/NOPB	TI	获取价格	具有集成 VCO 的 3.76GHz 宽带频率合成器 \| RTV \| 32 \| -40 t
LMX2582	TI	获取价格	5.5GHz 高性能、宽带 PLLatinum 射频合成器

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