Datasheet > LTC6951

LTC6951

更新时间： 2024-11-16 14:58:23

品牌	Logo	应用领域
亚德诺 - ADI		时钟
页数	文件大小	规格书
60页	2572K
描述
具集成型 VCO 的超低抖动、多输出时钟合成器

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中文翻译

获取价格

数据手册

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LTC6951 数据手册

LTC6951

Ultralow Jitter

Multioutput Clock Synthesizer

with Integrated VCO

DescripTion

FeaTures

The LTC^®6951 is a high performance, low noise, Phase

Locked Loop (PLL) with a fully integrated VCO. The low

noise VCO uses no external components and is internally

calibrated to the correct output frequency with no external

system support.

Low Noise Integer-N PLL with Integrated VCO

Output Jitter:

90fs RMS (12kHz to 20MHz)

115fs RMS (ADC SNR Method)

Noise Floor = –165dBc/Hz at 250MHz

EZSync™, ParallelSync™ Multichip Synchronization

The clock generation section provides five outputs based

on the VCO prescaler signal with individual dividers for

eachoutput.Fouroutputsfeatureverylownoise,lowskew

CML logic. The fifth output is low noise LVDS. All outputs

can be synchronized and set to precise phase alignment

using the programmable delays.

SYSREF Generation for JESD204B, Subclass 1

Output Frequency Range:

1.95MHz to 2.5GHz (LTC6951)

2.1MHz to 2.7GHz (LTC6951-1)

–229dBc/Hz Normalized In-Band Phase Noise Floor

–277dBc/Hz Normalized In-Band 1/f Noise

Five Independent, Low Noise Outputs

Choose the LTC6951-1 if any desired output frequency

falls in the ranges 2.5GHz to 2.7GHz, 1.66GHz to 1.8GHz,

or 1.25GHz to 1.35GHz. Choose the LTC6951 for all other

frequencies.

Reference Input Frequency up to 425MHz

LTC6951Wizard™ Software Design Tool Support

–40°C to 105°C Operating Junction Temperature Range

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

EZSync, LTC6951Wizard and ParallelSync are trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners. Protected by U.S. Patents,

including 8319551 and 8819472.

applicaTions

High Performance Data Converter Clocking

Wireless Infrastructure

Test and Measurement

Typical applicaTion

3.3V

10Ω

1µF

0.01µF

1µF

SNR vs Input Frequency of

100MHz

REF OSC

LTC6951 Clocking an LTC2107,

1µF

VCO

REF

f_S= 210Msps, A_IN= –3dBFS

63.4Ω

–

R DIVIDER

PHASE

REF

CHARGE

PUMP

50Ω

63.4Ω

FREQUENCY

1µF

DETECTOR

820pF

1.2nF

68nF

N DIVIDER

LTC6951

TUNE

CMA

CMB

CMC

0.1µF

P DIVIDER

OUT0

DELAY

DIV

–

OUT0

TO LTC2107

100Ω

1µF

OUT1

BVCO

470nF

DELAY

DIV

0.1µF

1µF

–

OUT1

SYNC

NOTE 12

SYNC

OUT2

LTC2107 APERTURE JITTER

= 45f

CONTROL

RMS

DELAY

DIV

TO ADC

OR DAC

–

LTC6951 JITTER

=115f

RMS

OUT2

STAT

100 200 300 400 500 600 700 800

OUT3

TO/FROM

PROCESSOR

INPUT FREQUENCY (MHz)

DELAY

DIV

6951 TAO1b

–

OUT3

SCLK

SDI

SERIAL

PORT

OUT4

SDO

DELAY

DIV

–

TO FPGA

OUT4

GND

6951 TAO1a

6951fa

For more information www.linear.com/LTC6951

12 3 4 5 6 7...60

中文翻译

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与LTC6951相关器件

型号	品牌	获取价格	描述	数据表
LTC6952	ADI	获取价格	具有 11 个输出并支持 JESD204B / JESD204C 协议的超低抖动、4.5G
LTC6953	ADI	获取价格	具有 11 个输出并支持 JESD204B/JESD204C 协议的超低抖动、4.5GHz
LTC695-3.3	Linear	获取价格	3.3V Microprocessor Supervisory Circuits
LTC695-3.3	ADI	获取价格	3.3V 微处理器监控电路
LTC695-3.3_15	Linear	获取价格	3.3V Microprocessor Supervisory Circuits
LTC695-3.3CSW	Linear	获取价格	IC 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16, 0.300 INCH, PLASTIC, SOP-16, Power Manag
LTC6955	ADI	获取价格	超低抖动 7.5GHz 11 输出扇出缓冲器系列
LTC6957-1	Linear	获取价格	Low Phase Noise, Dual Output Buffer/Driver/Logic Converter
LTC6957-1	ADI	获取价格	Low Phase Noise, Dual Output Logic Converter
LTC6957-1_15	Linear	获取价格	Low Phase Noise, Dual Output Buffer/Driver/ Logic Converter

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