ICS843031-01 Datasheet, PDF (1/16 Pages) Integrated Device Technology – FEMTOCLOCKS™ CRYSTAL-TO- 3.3V, 2.5V LVPECL CLOCK GENERATOR

FEMTOCLOCKS™ CRYSTAL-TO-
3.3V, 2.5V LVPECL CLOCK GENERATOR
GENERAL DESCRIPTION
ICS
The ICS843031-01 is an 10Gb Ethernet Clock
Generator and a member of the HiPerClocks^TM
HiPerClockS™ _{family of high performance devices from IDT. The}
ICS843031-01 uses an 18pF parallel resonant
crystal. The ICS843031-01 has excellent <1ps
phase jitter performance, over the 1.875MHz - 20MHz
integration range. The ICS843031-01 is packaged in a small
8-pin TSSOP, making it ideal for use in systems with limited
board space.
ICS843031-01
FEATURES
• One differential 3.3V or 2.5V LVPECL output
• Crystal oscillator interface designed for 25MHz,
18pF parallel resonant crystal
• Output frequencies: 280MHz – 340MHz
• VCO range: 560MHz - 680MHz
• RMS phase jitter @ 312.5MHz, using a 25MHz crystal
(1.875MHz - 20MHz): 0.46ps (typical)
• Full 3.3V or 2.5V operating supply
• 0°C to 70°C ambient operating temperature
• Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
COMMON CONFIGURATION TABLE
Inputs
Crystal Frequency (MHz) M
25
25
Output Frequency
N
Multiplication
Value M/N
(MHz)
2
25
312.5
BLOCK DIAGRAM
OE ^Pullup
XTAL_IN
XTAL_OUT
OSC
Phase
Detector
VCO
M = ÷25 (fixed)
Q
N = ÷2 (fixed)
nQ
IDT^™ / ICS^™ 3.3V, 2.5V LVPECL CLOCK GENERATOR
1
PIN ASSIGNMENT
VCCA 1
VEE 2
XTAL_OUT 3
XTAL_IN 4
8 VCC
7Q
6 nQ
5 OE
ICS843031-01
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm
package body
G Package
Top View
ICS843031AG-01 REV. A AUGUST 1, 2007