ICS843011C Datasheet, PDF (1/11 Pages) Integrated Circuit Systems – FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR

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 HiPerClocks^TM
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.
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.
÷6
M = ÷24 (fixed)
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