sy58021u Micrel Semiconductor, sy58021u Datasheet

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sy58021u

Manufacturer Part Number
sy58021u
Description
Sy58021u 4ghz, 1 4 Lvpecl Fanout Buffer/ Translator With Internal Termination
Manufacturer
Micrel Semiconductor
Datasheet

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Micrel, Inc.
Precision Edge is a registered trademark of Micrel , Inc.
Micro LeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
M9999-082807
hbwhelp@micrel.com or (408) 955-1690
FEATURES
APPLICATIONS
FUNCTIONAL BLOCK DIAGRAM
Precision 1:4, LVPECL fanout buffer
Guaranteed AC performance over temperature/
voltage:
• >4GHz f
• <100ps t
• <300ps t
• <15ps max skew
Low jitter performance
• <10ps
• <1ps
• <10ps
Accepts an input signal as low as 100mV
Unique input termination and VT pin accepts
DC-coupled and AC-coupled differential inputs:
LVPECL, LVDS, and CML
100k LVPECL compatible 800mV swing output
Power supply 2.5V
–40
Available in 16-pin (3mm × × × × × 3mm) MLF
All SONET and All GigE clock distribution
Fibre Channel clock and data distribution
Backplane distribution
High-end, low skew, multiprocessor synchronous
clock distribution
/IN
IN
V
V
°
T
REF-AC
C to +85
50Ω
50Ω
rms
pp
pp
MAX
r
pd
random jitter (data)
total jitter (clock)
deterministic jitter (data)
/ t
°
C temperature range
f
(clock)
Times
±
5% and 3.3V
±
10%
®
package
4GHz, 1:4 LVPECL FANOUT
BUFFER/ TRANSLATOR
WITH INTERNAL TERMINATION
Q0
/Q0
Q1
/Q1
Q2
/Q2
Q3
/Q3
1
differential 1:4 LVPECL fanout buffer. Optimized to provide
four identical output copies with less than 15ps of skew and
less than 10ps
clock signals as fast as 4GHz.
termination architecture interfaces to differential LVPECL,
CML, and LVDS 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 (V
AC
LVPECL compatible, with extremely fast rise/fall times
guaranteed to be less than 100ps.
3.3V ±10% supply and is guaranteed over the full industrial
temperature range (–40°C to +85°C). For applications that
require faster rise/fall times, or greater bandwidth, consider
the SY58022U 1:4 fanout buffer with 400mV LVPECL output
swing, or the SY58020U 1:4 CML fanout buffer. The
SY58021U is part of Micrel’s high-speed, Precision Edge
product line.
site at www.micrel.com.
DESCRIPTION
TYPICAL PERFORMANCE
) is provided to bias the VT pin. The outputs are 100k
The SY58021U is a 2.5V/3.3V precision, high-speed, fully
The differential input includes Micrel’s unique, 3-pin input
The SY58021U operates from a 2.5V ±5% supply or
All support documentation can be found on Micrel’s web
pp
total jitter, the SY58021U can process
.25GHz Output
IME (100ps/div.)
Precision Edge
Precision Edge
Rev.: F
Issue Date: August 2007
Precision Edge
SY58021U
Amendment: /0
SY58021U
REF -
®
®
®
®

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sy58021u Summary of contents

Page 1

... AC LVPECL compatible, with extremely fast rise/fall times guaranteed to be less than 100ps. ± 10% The SY58021U 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 ® package require faster rise/fall times, or greater bandwidth, consider the SY58022U 1:4 fanout buffer with 400mV LVPECL output swing, or the SY58020U 1:4 CML fanout buffer ...

Page 2

... Pb-Free bar-line indicator Industrial 021U with Pb-Free bar-line indicator = 25°C, DC electricals only. A pin provides a T –1.2V used when AC-coupling CC directly to the VT pin. Bypass with 0.01µF low ESR –2V at the receiving end. CC ® SY58021U Lead Finish Sn-Pb Sn-Pb Pb-Free NiPdAu Pb-Free NiPdAu ...

Page 3

... V –1.30 V –1 (5) Min Typ Max V –1.145 –1.945 550 780 1050 1100 1560 2100 ® SY58021U Max Units 2.625 V 3.60 V 160 –0 1 Ω 1.28 V –1 Units –0.895 V –1.695 ...

Page 4

... T is the time between rising edges of the output n–1 12 output edges will deviate by more than the V , DIFF_IN V DIFF_OUT Figure 1b. Differential Voltage Swing ® SY58021U Max Units GHz Gbps 300 RMS 10 ...

Page 5

... TEMPERATURE (°C) Skew vs. Temperature 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 -60 -40 - 100 TEMPERATURE (°C) 5 ® Precision Edge SY58021U Propagation Delay vs. Input Voltage Swing 194 192 190 188 186 184 182 180 178 176 174 0 200 400 600 800 1000 1200 INPUT VOLTAGE SWING (mV) ...

Page 6

... Micrel, Inc. FUNCTIONAL CHARACTERISTICS V = 2.5V, GND = 100mV 25°C, unless otherwise stated 200MHz Output TIME (600ps/div.) M9999-082807 hbwhelp@micrel.com or (408) 955-1690 5GHz Output TIME (25ps/div.) 4GHz Output TIME (30ps/div.) 6 ® Precision Edge SY58021U ...

Page 7

... V For 3.3V 100Ω For 2.5V 50Ω pd Figure 3b. AC-Coupled LVPECL Input Interface CML /IN SY58021U VT V REF-AC 0.01µ Figure 3e. AC-Coupled CML Input Interface 7 ® Precision Edge SY58021U LVDS /IN SY58021U REF-AC Figure 3c. LVDS Input Interface ...

Page 8

... Precision Edge +3. 50Ω 50Ω 50Ω 50Ω “destination” V 50Ω For +2.5V 19Ω * For +3.3V 46Ω to 50Ω –1. +3.3V 1kΩ R3 1.6kΩ ® SY58021U DD C1 (optional) 0.01µF ...

Page 9

... PCB Thermal Consideration for 16-Pin MLF™ Package (Always solder, or equivalent, the exposed pad to the PCB (408) 474-1000 FAX Micrel for any damages resulting from such use or sale. © 2005 Micrel, Incorporated. 9 Package EP- Exposed Pad Die http://www.micrel.com WEB ® Precision Edge SY58021U ...

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