Microchip SY58013U Manual

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M9999-063010

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

6GHz, 1:2 FANOUT BUFFER/TRANSLATOR

w/400mV LVPECL OUTPUTS and INTERNAL

INPUT TERMINATION

Precision Edge®

SY58013U

Rev.: F Amendment: /0

Issue Date: November 2011

DESCRIPTION

■Precision 1:2, 400mV LVPECL fanout buffer

■ Low jitter performance:

•55fsRMS phase jitter (typ)

■Accepts an input signal as low as 100mV

■Guaranteed AC performance over temperature and

voltage:

•> 6GHz fMAX clock

•< 80ps tr/tf times

•< 250ps tpd

•< 15ps max. skew

■Unique input termination and VT pin accepts

DC-coupled and AC-coupled differential

inputs: LVPECL, LVDS and CML

■400mV LVPECL compatible outputs

■Power supply 2.5V ±5% and 3.3V ±10%

■–40°C to +85°C temperature range

■Available in 16-pin (3mm x 3mm) QFN package

FEATURES

APPLICATIONS

■All SONET and All GigE clock distribution

■Fibre Channel clock and data distribution

■Backplanes

■Data distribution: OC-48, OC-48+FEC, XAUI

■High-end, low-skew, multiprocessor synchronous

clock distribution

The SY58013U is a 2.5V/3.3V precision, high-speed, fully

differential 1:2 LVPECL fanout buffer. Optimized to provide

two identical output copies with less than 15ps of skew and

only 55fsRMS phase jitter, the SY58013U can process clock

signals as fast as 6GHz or data patterns up to 10.7Gbps.

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

termination architecture that interfaces to LVPECL, LVDS,

and CML differential signals, (AC- or DC-coupled) as small

as 100mV without any level-shifting or termination resistor

networks in the signal path. For AC-coupled input interface

applications, an on-board output reference voltage (VREF-

AC) is provided to bias the VT pin. The outputs are 400mV

LVPECL compatible, with extremely fast rise/fall times

guaranteed to be less than 80ps.

The SY58013U 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 greater output swing or CML compatible outputs,

consider the SY58012U 1:2 fanout buffer with 800mV

LVPECL outputs, or the SY58011U 1:2 fanout buffer with

400mV CML outputs. The SY58013U is part of Micrel’s

high-speed, Precision Edge® product line. Datasheets and

support documentation can be found on Micrel’s web site at

www.micrel.com.

FUNCTIONAL BLOCK DIAGRAM TYPICAL PERFORMANCE

2GHz with 100mV Input

Precision Edge®

Precison Edge is a registered trademark of Micrel, Inc.

Precision Edge®

SY58013U

Micrel, Inc.

M9999-063010

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

PACKAGE/ORDERING INFORMATION

Pin Number Pin Name Pin Function

1, 4 IN, /IN Differential Input: This input pair is the signal to be buffered. Each pin is internally

terminated with 50 ohms to the VT pin. Note that this input will default to an indeterminate

state if left open. See “Input Interface Applications” section.

2 VT Input Termination Center-Tap: Each input terminates to this pin. The V T pin provides a

   center-tapforeachinput(IN,/IN)toaterminationnetworkformaximuminterfaceexibility.

See “Input Interface Applications” section.

3 VREF-AC Reference Output Voltage: This output biases to V

CC –1.2V. It is used for AC-coupled

inputs (IN, /IN). Connect VREF-AC directly to the VT pin. Bypass with 0.01µF low ESR

capacitor to VCC. Maximum curent source or sink is 0.5mA. See “Input Interface

Applications” section.

5, 8, 13, 16 VCC Positive Power Supply: Bypass with 0.1µF//0.01µF low ESR capacitors as close to the

VCC pins as possible.

6, 7, 14, 15 GND, Ground. Exposed pad must be connected to a ground plane that is the same potential

(Exposed Pad) as the ground pin.

12, 11 Q0, /Q0, LVPECL Differential Output Pairs: Differential buffered output copy of the input signal. The

 9,10 Q1,/Q1 outputswingistypically400mV.Unusedoutputpairsmaybeleftoatingwithnoimpacton

jitter. See “LVPECL Output Termination” section.

PIN DESCRIPTION

16-Pin QFN

Ordering Information(1)

Package Operating Package

Part Number Type Range Marking

SY58013UMG(3) QFN-16 Industrial 013U with

Pb-Free Pb-Free bar-line indicator

SY58013UMGTR(2, 3) QFN-16 Industrial 013U with

Pb-Free Pb-Free bar-line indicator

Notes:

1. Contact factory for die availability. Dice are guaranteed at T

A = 25°C, DC electricals only.

All devices are Pb-Free.

2. Tape and Reel.

3. Pb-Free package recommended for new designs.

Produkt Specifikationer

Mærke:	Microchip
Kategori:	Ikke kategoriseret
Model:	SY58013U

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