ICS843S1066 Datasheet, PDF (1/12 Pages) Integrated Device Technology – CRYSTAL-TO-3.3V LVPECL CLOCK SYNTHESIZER

CRYSTAL-TO-3.3V LVPECL CLOCK SYNTHESIZER
ICS843S1066
General Description
The ICS843S1066 is a high frequency clock
ICS
generator and is a member of the HiPerClockS™
HiPerClockS™ _{family of High Performance Clock Solutions from}
IDT. The ICS843S1066 uses an external 20MHz
crystal to synthesize either 1066.67MHz or
1600MHz. The ICS843S1066 has excellent cycle-to-cycle and
RMS period jitter performance.
The ICS843S1066 operates at 3.3V operating supply and is
available in a fully RoHS compliant 8-lead TSSOP package.
Features
• One differential LVPECL output
• Crystal oscillator interface designed for 18pF, 20MHz parallel
resonant crystal
• Cycle-to-Cycle Jitter: 25ps (maximum)
• Period Jitter, RMS: 1.9ps (maximum)
• Output Duty Cycle: 48 – 52%
• Full 3.3V supply mode
• 0°C to 70°C ambient operating temperature
• Available in lead-free (RoHS 6) package
Table 1. Frequency Table
F_SEL
Crystal Frequency (MHz)
0
20
1
20
Multiplier Value
53.3
80
Output Frequency (MHz)
1066.67 (default)
1600
Block Diagram
F_SEL ^Pulldown
20MHz
XTAL_IN
Q
OSC
PLL Multiplier
nQ
XTAL_OUT
Pin Assignment
VCCA 1
VEE 2
XTAL_OUT 3
XTAL_IN 4
8 VCC
7Q
6 nQ
5 F_SEL
ICS843S1066
8 Lead TSSOP
4.40mm x 3.0mm x 0.925mm
package body
G Package
Top View
IDT™ / ICS™ 3.3V LVPECL CLOCK SYNTHESIZER
1
ICS843S1066CG REV. A AUGUST 27, 2008