Microchip SY58032U Bruksanvisning
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1
M9999-072810
hbwhelp@micrel.com or (408) 955-1690
DESCRIPTION
■Precision 1:8, LVPECL fanout buffer
■Guaranteed AC performance over temperature and
voltage:
• Clockfrequencyrange:DCto4GHz
• <110pstr / tf times
• <330pstpd
• <20psskew
■Low-jitterperformance:
• 76fsRMSphasejitter(typ)
■100kLVPECLcompatibleoutputs
■Fullydifferentialinputs/outputs
■Acceptsaninputsignalaslowas100mV
■UniqueinputterminationandVT pin accepts
DC-coupledandAC-coupleddifferentialinputs:
(LVPECL,LVDS,andCML)
■Powersupply2.5V±5%or3.3V±10%
■Industrialtemperaturerange: –40°Cto+85°C
■Availablein32-pin(5mmx5mm)MLF®package
FEATURES
ULTRA-PRECISION1:8FANOUT
BUFFER LVPECL OUTPUTS WITH
AND INTERNAL TERMINATION
Precision Edge®
SY58032U
APPLICATIONS
■AllSONETandallGigEclockdistribution
■AllFibreChannelclockanddatadistribution
■Networkroutingenginetimingdistribution
■High-end,low-skewmultiprocessorsynchronous
clockdistribution
Rev.: E Amendment: /0
Issue Date: July 2010
The SY58032U is a 2.5V/3.3V precision, high-speed,
fully differential LVPECL 1:8 fanout buffer. The SY58032U
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 4GHz.
The differential input includes Micrel’s unique, 3-pin input
termination architecture that allows the SY58032U to directly
interface to LVPECL, CML, and LVDS differential signals
(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 interface solution. The LVPECL (100k
temperature compensated) outputs feature 800mV typical
swing into 50ý loads, and provide an extremely fast rise/fall
time guaranteed to be less than 110ps.
The SY58032U 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). For applications that
require a higher high-speed 1:8 fanout buffer, consider the
SY58031U or SY58033U. The SY58032U 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®
Q1
/Q1
Q0
/Q0
IN
/IN
V
T
50Ω
50Ω
V
REF-AC
Q3
/Q3
Q2
/Q2
Q5
/Q5
Q4
/Q4
Q7
/Q7
Q6
/Q6
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
Produktspecifikationer
| Varumärke: | Microchip |
| Kategori: | Inte kategoriserad |
| Modell: | SY58032U |
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