Integrated
Circuit
Systems, Inc.
ICS843011
F
EMTO
C
LOCKS
™ C
RYSTAL
-
TO
-
3.3V LVPECL C
LOCK
G
ENERATOR
F
EATURES
•
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
G
ENERAL
D
ESCRIPTION
The ICS843011 is a Fibre Channel Clock Generator
and a member of the HiPerClocks
TM
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.
ICS
F
REQUENCY
T
ABLE
Crystal (MHz)
26.5625
25
Output Frequency (MHz)
106.25
100
B
LOCK
D
IAGRAM
XTAL_IN
P
IN
A
SSIGNMENT
VCO
637.5MHz w/
26.5625MHz Ref.
OSC
XTAL_OUT
Phase
Detector
÷6
nQ0
Q0
V
CCA
V
EE
XTAL_OUT
XTAL_IN
1
2
3
4
8
7
6
5
V
CC
Q0
nQ0
nc
M = ÷24 (fixed)
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
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
