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Integrated Circuit Systems - FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR

Numéro de référence ICS843011
Description FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR
Fabricant Integrated Circuit Systems 
Logo Integrated Circuit Systems 





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ICS843011 fiche technique
Integrated
Circuit
Systems, Inc.
ICS843011www.DataSheet4U.com
FEMTOCLOCKS™CRYSTAL-TO-
3.3V LVPECL CLOCK GENERATOR
GENERAL DESCRIPTION
ICS
The ICS843011 is a Fibre Channel Clock Generator
and a member of the HiPerClocksTM family of high
HiPerClockS™ performance devices from ICS. The ICS843011
uses a 26.5625MHz crystal to synthesize
106.25MHz or a 25MHz crystal to synthesize
100MHz. The ICS843011 has excellent <1ps phase jitter
performance, over the 637KHz – 10MHz integration range. The
ICS843011 is packaged in a small 8-pin TSSOP, making it ideal
for use in systems with limited board space.
FEATURES
1 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): 0.80ps (typical)
RMS phase noise at 106.25MHz
Phase noise:
Offset
Noise Power
100Hz ............... -92.8 dBc/Hz
1KHz .............. -119.6 dBc/Hz
10KHz .............. -129.5 dBc/Hz
100KHz .............. -130.5 dBc/Hz
3.3V operating supply
Lead-Free package fully RoHS compliant
-40°C to 85°C ambient operating temperature
FREQUENCY TABLE
Crystal (MHz)
26.5625
25
Output Frequency (MHz)
106.25
100
BLOCK DIAGRAM
XTAL_IN
XTAL_OUT
OSC
Phase
Detector
VCO
637.5MHz w/
26.5625MHz Ref.
M = ÷24 (fixed)
PIN ASSIGNMENT
VCCA 1
8 VCC
÷6
nQ0
VEE 2
7 Q0
Q0
XTAL_OUT 3
6 nQ0
XTAL_IN 4
5 nc
ICS843011
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm package body
G Package
Top View
843011AG
www.icst.com/products/hiperclocks.html
1
REV. B DECEMBER 10, 2004

PagesPages 13
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