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PDF ICS843011C Data sheet ( Hoja de datos )

Número de pieza ICS843011C
Descripción FEMTOCLOCKS CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR
Fabricantes Integrated Circuit Systems 
Logotipo Integrated Circuit Systems Logotipo



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No Preview Available ! ICS843011C Hoja de datos, Descripción, Manual

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS843011C
FEMTOCLOCKS™ CRYSTAL-TO-
3.3V LVPECL CLOCK GENERATOR
GENERAL DESCRIPTION
The ICS843011C is a Fibre Channel Clock
ICS Generator and a member of the HiPerClocksTM
HiPerClockS™ family of high performance devices from ICS.
The ICS843011C uses a 26.5625MHz crystal to
synthesize 106.25MHz or a 25MHz crystal to
synthesize 100MHz. The ICS843011C has excellent <1ps
phase jitter performance, over the 637kHz – 10MHz
integration range. The ICS843011C is packaged in a small
8-pin TSSOP, making it ideal for use in systems with limit-
ed board space.
www.DataSheet4U.com
FEATURES
One differential 3.3V LVPECL output
Crystal oscillator interface designed for 26.5625MHz
18pF parallel resonant crystal
Output frequency: 106.25MHz or 100MHz
VCO range: 560MHz - 680MHz
RMS phase jitter @ 100MHz, using a 25MHz crystal
(637kHz - 10MHz): 0.29ps (typical)
3.3V operating supply
-40°C to 85°C ambient operating temperature
Available in both standard and lead-free RoHS compliant
packages
FREQUENCY TABLE
Crystal (MHz)
26.5625
25
Output Frequency (MHz)
106.25
100
BLOCK DIAGRAM
PIN ASSIGNMENT
XTAL_IN
XTAL_OUT
OSC
Phase
Detector
VCO
637.5MHz w/
26.5625MHz Ref.
M = ÷24 (fixed)
÷6
VCCA 1
8 VCC
Q
VEE 2
7Q
nQ
XTAL_OUT 3
6 nQ
XTAL_IN 4
5 nc
ICS843011C
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm package body
G Package
Top View
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on
initial product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications
without notice.
843011CG
www.icst.com/products/hiperclocks.html
REV. A JANUARY 25, 2006
1

1 page




ICS843011C pdf
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS843011C
FEMTOCLOCKS™ CRYSTAL-TO-
3.3V LVPECL CLOCK GENERATOR
APPLICATION INFORMATION
POWER SUPPLY FILTERING TECHNIQUES
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS843011C provides
separate power supplies to isolate any high switching
www.DnaotiasSehefreotm4U.tchoemoutputs to the internal PLL. VCC and VCCA
should be individually connected to the power supply
plane through vias, and bypass capacitors should be
used for each pin. To achieve optimum jitter performance,
power supply isolation is required. Figure 1 illustrates how
a 10Ω resistor along with a 10μF and a .01μF bypass
capacitor should be connected to each VCCA pin.
VCC
VCCA
3.3V
.01μF 10Ω
.01μF
10μF
FIGURE 1. POWER SUPPLY FILTERING
CRYSTAL INPUT INTERFACE
The ICS843011C has been characterized with 18pF parallel
resonant crystals. The capacitor values, C1 and C2, shown in
Figure 2 below were determined using a 26.5625MHz, 18pF
parallel resonant crystal and were chosen to minimize the
ppm error. The optimum C1 and C2 values can be slightly
adjusted for different board layouts.
X1
18pF Parallel Crystal
XTAL_OUT
C1
33p
XTAL_IN
C2
22p
Figure 2. CRYSTAL INPUt INTERFACE
843011CG
www.icst.com/products/hiperclocks.html
5
REV. A JANUARY 25, 2006

5 Page





ICS843011C arduino
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS843011C
FEMTOCLOCKS™ CRYSTAL-TO-
3.3V LVPECL CLOCK GENERATOR
TABLE 10. ORDERING INFORMATION
Part/Order Number
Marking
Package
Shipping Packaging Temperature
ICS843011CG
3011C
8 lead TSSOP
tube
-40°C to 85°C
ICS843011CGT
3011C
8 lead TSSOP
2500 tape & reel -40°C to 85°C
ICS843011CGLF
TBD
8 lead "Lead-Free" TSSOP
tube
-40°C to 85°C
ICS843011CGLFT
TBD
8 lead "Lead-Free" TSSOP
2500 tape & reel -40°C to 85°C
NOTE: Parts that are ordered with an "LF suffix to the part number are the Pb-Free configuration and are RoHS compliant.
www.DataSheet4U.com
The aforementioned trademarks, HiPerClockS and FemtoClocks are trademarks of Integrated Circuit Systems, Inc. or its subsidiaries in the United States and/or other countries.
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (ICS) assumes no responsibility for either its use
or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use
in normal commercial and industrial applications. Any other applications such as those requiring ehigh reliability or other extraordinary environmental requirements are not
recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product
for use in life support devices or critical medical instruments.
843011CG
www.icst.com/products/hiperclocks.html
REV. A JANUARY 25, 2006
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