Datasheet > LMX2486

LMX2486

更新时间： 2024-11-22 11:10:51

品牌	Logo	应用领域
德州仪器 - TI		通信射频个人通信
页数	文件大小	规格书
48页	1134K
描述
用于射频个人通信的 1GHz 至 4.5GHz Δ-Σ 低功耗双路 PLL

阅读下载

中文翻译

获取价格

数据手册
替代型号

如果您发现信息不准确，欢迎纠错

LMX2486 数据手册

Sample &

Buy

Support &

Community

Product

Folder

Tools &

Software

Technical

Documents

LMX2486

SNAS324B –JANUARY 2006–REVISED JANUARY 2016

LMX2486 1-GHz to 4.5-GHz High-Performance Delta-Sigma Low-Power Dual PLLatinum™

Frequency Synthesizers With 3-GHz Integer PLL

1 Features

•

Quadruple Modulus Prescaler for Lower Divids

3 Description

The LMX2486 device is

low-power, high

–

RF PLL: 16/17/20/21 or 32/33/36/37

IF PLL: 8/9 or 16/17

performance delta-sigma fractional-N PLL with an

auxiliary integer-N PLL. The device is fabricated

using TI’s advanced process.

•

Advanced Delta Sigma Fractional Compensation

–

12-Bit or 22-Bit Selectable Fractional Modulus

With delta-sigma architecture, fractional spurs at

lower offset frequencies are pushed to higher

frequencies outside the loop bandwidth. The ability to

push close in spur and phase noise energy to higher

frequencies is a direct function of the modulator

order. Unlike analog compensation, the digital

feedback technique used in the LMX2486 is highly

resistant to changes in temperature and variations in

wafer processing. The LMX2486 delta-sigma

modulator is programmable up to fourth order, which

allows the designer to select the optimum modulator

order to fit the phase noise, spur, and lock time

requirements of the system.

Up to 4th Order Programmable Delta-Sigma

Modulator

•

Improved Lock Times and Programming

–

Fastlock / Cycle Slip Reduction Which

Requires Only a Single-Word Write

–

Integrated Time-Out Counter

•

Wide Operating Range

LMX2486 RF PLL: 1.0 GHz to 4.5 GHz

Useful Features

–

Digital Lock Detect Output

Hardware and Software Power-Down Control

On-Chip Crystal Reference Frequency Doubler

RF Phase Detector Frequency Up to 50 MHz

2.5-V to 3.6-V Operation With I_CC= 8.5 mA

Serial data for programming the LMX2486 is

transferred through a three-line, high-speed (20-MHz)

MICROWIRE interface. The LMX2486 offers fine

frequency resolution, low spurs, fast programming

speed, and a single-word write to change the

frequency. This makes it ideal for direct digital

modulation applications, where the N-counter is

directly modulated with information. The LMX2486 is

available in a 24-lead 4.0 × 4.0 × 0.8 mm WQFN

package.

2 Applications

•

Cellular Phones and Base Stations

Direct Digital Modulation Applications

Satellite and Cable TV Tuners

WLAN Standards

Device Information⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LMX2486

WQFN (24)

4.00 mm × 4.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Functional Block Diagram

ëddLC1

ëddLC2

LC b ꢂivider

. /ounꢀer

! /ounꢀer

8ꢁ9

CinLC

ꢄbꢅ{/

ꢅ{/in

thase

/omp

/harge

tump

16ꢁ17

trescaler

/touꢀLC

[ꢂ

LC w

ꢂivider

ꢅ{/ouꢀ

ëddwC1

Cꢀesꢀꢁ[ꢂ

ꢃÜó

Cꢀesꢀꢁ[ꢂ

wC w

ꢂivider

1X / 2X

ëddwC2

ëddwC3

ëddwC4

ëddwC5

CinwC

wC [ꢂ

wC b ꢂivider

/ /ounꢀer

16ꢁ17ꢁ20ꢁ21

32ꢁ33ꢁ36ꢁ37

trescaler

/harge

tump

thase

/omp

/touꢀwC

C[ouꢀwC

. /ounꢀer

wC b ꢂivider

FinRF*

! /ounꢀer

/ꢄ

wC Casꢀlock

/[Y

ꢃL/wꢅíLwꢄ

Lnꢀerface

ꢂ!Ç!

Dbꢂ

Compensation

[ꢄ

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...48

中文翻译

下载PDF

LMX2486 替代型号

型号	品牌	替代类型	描述	数据表
LMX2485E	TI	功能相似	用于射频个人通信的 50MHz 至 3GHz Δ-Σ 低功耗双路 PLL
LMX2485	TI	功能相似	用于射频个人通信的 500MHz 至 3GHz Δ-Σ 低功耗双路 PLL

与LMX2486相关器件

型号	品牌	获取价格	描述	数据表
LMX2486SQ	NSC	获取价格	IC PLL FREQUENCY SYNTHESIZER, 4500 MHz, PQCC24, 4 X 4 MM, 0.8 MM HEIGHT, PLASTIC, LLP-24,
LMX2486SQ/NOPB	TI	获取价格	用于射频个人通信的 1GHz 至 4.5GHz Δ-Σ 低功耗双路 PLL \| RTW \|
LMX2487	NSC	获取价格	1.0 GHz - 6.0 GHz High Performance Delta-Sigm
LMX2487	TI	获取价格	Low-Power Dual PLLatinum Frequency Synthesizers
LMX2487_08	NSC	获取价格	1.0 GHz - 6.0 GHz High Performance Delta-Sigm
LMX2487E	NSC	获取价格	7.5 GHz High Performance Delta-Sigma Low Powe
LMX2487E	TI	获取价格	用于射频个人通信的 3GHz 至 7.5GHz Δ-Σ 低功耗双路 PLL
LMX2487ESQ	NSC	获取价格	7.5 GHz High Performance Delta-Sigma Low Powe
LMX2487ESQ/NOPB	TI	获取价格	用于射频个人通信的 3GHz 至 7.5GHz Δ-Σ 低功耗双路 PLL \| RTW \|
LMX2487ESQE/NOPB	TI	获取价格	Delta-Sigma Low Power Dual PLL for RF Personal Communications 24-WQFN -40 to 85

与LMX2486相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

27
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

19
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

49
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

47

产品中心

服务支持

精选活动

关于我们

帮助中心

LMX2486

LMX2486 数据手册

LMX2486 替代型号

与LMX2486相关器件

与LMX2486相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LMX2486

LMX2486 数据手册

LMX2486 替代型号

与LMX2486相关器件

与LMX2486相关文章

您还可以找

您在本页遇到什么问题？