Microchip SY58033U Handleiding

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M9999-072810

hbwhelp@micrel.com or (408) 955-1690

DESCRIPTION

■Precision 1:8, 400mV LVPECL fanout buffer

■Low-jitter performance:

• 76fsRMS phase jitter (typ)

■Guaranteed AC performance over temperature and

voltage:

•Clockfrequencyrange: DCto5.5GHz

• <80pstr / tf times

• <280pstpd

• <20psskew

■100kLVPECLcompatibleoutputs

■Fully differential inputs/outputs

■Accepts an input signal as low as 100mV

■UniqueinputterminationandVTpin accepts

DC-coupled and AC-coupled differential inputs:

(LVPECL, LVDS, and CML)

■Powersupply2.5V±5%or3.3V±10%

■Industrial temperature range: –40°C to +85°C

■Availablein32-pin(5mmx5mm)QFNPackage

FEATURES

ULTRA-PRECISION 1:8 FANOUT

BUFFER 400mV LVPECL OUTPUTS WITH

AND INTERNAL TERMINATION

Precision Edge®

SY58033U

APPLICATIONS

■AllSONETandallGigEclockdistribution

■AllFibreChannelclockanddatadistribution

■Networkroutingenginetimingdistribution

■High-end,low-skewmultiprocessorsynchronous

clockdistribution

Rev.: F Amendment: /0

Issue Date: October 2011

The SY58033U is a 2.5V/3.3V precision, high-speed, fully

differential 400mV LVPECL 1:8 fanout buffer. The SY58033U

is optimized to provide eight identical output copies with

less than 20ps of skew and only 76fsRMS phase jitter. It can

process clock signals as fast as 5.5GHz.

The differential input includes Micrel’s unique, 3-pin input

termination architecture that allows the SY58033U to directly

interface to LVPECL, CML, and LVDS differential signal

(AC- or DC-coupled) without any level-shifting or termination

resistor networks in the signal path. The result is a clean,

stub-free, low-jitter solution. The LVPECL (100k temperature

compensated) outputs feature a 400mV typical swing into

50 ohms loads, and provide an extremely fast rise/fall time

guaranteed to be less than 80ps.

The SY58033U operates from a 2.5V ±5% supply or

3.3V ±10% supply and is guaranteed over the full industrial

temperature range (–40°C to +85°C). Other high-speed 1:8

fanout buffers include the CML SY58031U and the 800mV

LVPECL SY58032U. The SY58033U is part of Micrel’s high-

speed, Precision Edge® product line.

All support documentation can be found on Micrel’s web

site at www.micrel.com.

FUNCTIONAL BLOCK DIAGRAM

Precision Edge®

Precision Edge is a registered trademark of Micrel, Inc.

Product specificaties