Datasheet > MAX3673

MAX3673

更新时间： 2024-11-13 05:49:03

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描述
Low-Jitter Frequency Synthesizer with Selectable Input Reference

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MAX3673 数据手册

19-4442; Rev 0; 2/09

Low-Jitter Frequency Synthesizer

with Selectable Input Reference

MAX673

General Description

Features

The MAX3673 is a low-jitter frequency synthesizer that

accepts two reference clock inputs and generates nine

phase-aligned outputs. The device features 40kHz jitter

♦ Two Reference Clock Inputs: LVPECL

♦ Nine Phase-Aligned Clock Outputs: LVPECL

♦ Input Frequencies: 61.44MHz,122.88MHz,

transfer bandwidth, 0.3ps

(12kHz to 20MHz) inte-

RMS

245.76MHz, 307.2MHz

grated phase jitter, and best-in-class power-supply

noise rejection (PSNR), making it ideal for jitter clean-

up, frequency translation, and clock distribution in wire-

less base-station applications.

♦ Output Frequencies: 61.44MHz, 122.88MHz,

153.6MHz, 245.76MHz, 307.2MHz

♦ Low-Jitter Generation: 0.3ps

(12kHz to 20MHz)

RMS

The MAX3673 operates from a single +3.3V supply and

typically consumes 400mW. The IC is available in an

8mm x 8mm, 56-pin TQFN package, and operates from

-40°C to +85°C.

♦ Clock Failure Indicator for Both Reference Clocks

♦ External Feedback Provides Zero-Delay Capability

♦ Low Output Skew: 20ps Typical

Applications

3G Wireless Base Stations

Frequency Translation

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX3673ETN+

-40°C to +85°C

56 TQFN-EP*

Jitter Cleanup

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

Clock Distribution

Pin Configuration and Typical Application Circuits appear at

end of data sheet.

Functional Diagram

PLL

0.1μF

REG

0.22μF

SEL_CLK

PLL_BYPASS

OUTA_EN

REFCLK0

OUTA3

REFCLK0

REFCLK1

DIV M

PFD

61.44MHz

VCO

2.457GHz

DIV A

OUTA2

REFCLK1

OUTA1

IN0FAIL

IN1FAIL

LOCK

SIGNAL QUALIFIER

AND

LOCK DETECT

OUTA0

DIV N

OUTB_EN

POWER-ON

RESET

(POR)

OUTB4

DIV B

OUTB3

OUTB2

OUTB1

MAX3673

OUTB0

FB_SEL

FB_IN FB_IN

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...16

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与MAX3673相关器件

型号	品牌	获取价格	描述	数据表
MAX3673ETN+	MAXIM	获取价格	Low-Jitter Frequency Synthesizer with Selectable Input Reference
MAX3674	MAXIM	获取价格	High-Performance, Dual-Output, Network Clock Synthesizer
MAX3674_08	MAXIM	获取价格	Evaluation Kit
MAX3674ECM	MAXIM	获取价格	High-Performance, Dual-Output, Network Clock Synthesizer
MAX3674EVKIT	MAXIM	获取价格	On-Board 16MHz Crystal Reference
MAX3674EVKIT+	MAXIM	获取价格	Evaluation Kit
MAX3675	MAXIM	获取价格	622Mbps, Low-Power, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier
MAX3675E/D	MAXIM	获取价格	622Mbps, Low-Power, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier
MAX3675E/W	MAXIM	获取价格	Clock Recovery Circuit, 1-Func,
MAX3675ECJ	MAXIM	获取价格	622Mbps, Low-Power, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier

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