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PDF SY58012U Data sheet ( Hoja de datos )
| Número de pieza | SY58012U | |
| Descripción | 1:2 LVPECL FANOUT BUFFER/TRANSLATOR | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SY58012U (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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Micrel
5GHz, 1:2 LVPECL FANOUT
Precision Edge™
BUFFER/TRANSLATOR
Precision ESdYg5e8™012U
SY58012U
WITH INTERNAL INPUT TERMINATION
FEATURES
Precision 1:2, 800mV LVPECL fanout buffer
Guaranteed AC performance over temperature/
voltage:
• > 5GHz fMAX (clock)
• < 110ps tr / tf times
• < 260ps tpd
• < 15ps max skew
Low jitter performance
• < 10ps(pk-pk) total jitter (clock)
• < 1ps(rms) random jitter (data)
• < 10ps(pk-pk) deterministic jitter (data)
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
Outputs are 100k LVPECL compatible, 800mV swing
Power supply 2.5V ±5% and 3.3V ±10%
–40°C to +85°C temperature range
Available in 16-pin (3mm × 3mm) MLF™ package
APPLICATIONS
s All SONET and GigE clock distribution
s Fibre Channel clock and data distribution
s Backplane distribution
s High-end, low skew, multiprocessor synchronous
clock distribution
Precision Edge™
DESCRIPTION
The SY58012U 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
less than 10ps(pk-pk) total jitter, the SY58012U can process
clock signals as fast as 5GHz or 5Gbps data.
The differential input includes Micrel’s unique, 3-pin input
termination architecture that interfaces to LVPECL, LVDS
or CML differential signals, (AC-coupled 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
100k LVPECL compatible, with extremely fast rise/fall times
guaranteed to be less than 110ps.
The SY58012U 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 faster rise/fall times, or greater bandwidth, consider
the SY58013U 1:2 fanout buffer with 400mV output swing,
or the SY58011 1:2 CML (400mV) fanout buffer. The
SY58012U is part of Micrel’s high-speed, Precision Edge™
product line. Data sheets and support documentation can
be found on Micrel’s web site at www.micrel.com.
FUNCTIONAL BLOCK DIAGRAM
IN
50Ω
VT
50Ω
/IN
VREF-AC
Q0
/Q0
Q1
/Q1
Precision Edge is a trademark of Micrel , Inc.
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
TYPICAL PERFORMANCE
2.5GHz Output
VCC = 3.3V
TIME (50ps/div.)
2GHz with 100mV Input
Rev.: A Amendment: /0
1 Issue Date: July 2003
1 page  
Micrel
TYPICAL OPERATING CHARACTERISTICS
VCC = 3.3V, GND = 0, VIN = 100mV, TA = 25°C, unless otherwise stated.
Frequency vs. Amplitude
800
700
600
500
400
300
200
100
0
FREQUENCY (MHz)
Propagation Delay vs.
Input Voltage Swing
190
185
180
175
170
165
160
1550 200 400 600 800 1000
INPUT VOLTAGE SWING (V)
Precision Edge™
SY58012U
Within-Device Skew vs.
Temperature
10
9
8
7
6
5
4
3
2
1
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
Propagaton Delay vs.
Temperature
195
190
185
180
175
170
165
160
155
150
145
140
135
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet SY58012U.PDF ] | |
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