843081I-01 Datasheet, PDF (1/16 Pages) Integrated Device Technology – FemtoClock® Crystal-to-2.5V, 3.3V LVPECL Clock Multiplier

FemtoClock^® Crystal-to-2.5V, 3.3V LVPECL
Clock Multiplier
843081I-01
DATA SHEET
GENERAL DESCRIPTION
The 843081I-01 is an Ethernet Clock Multiplier.The 843081I-01
accepts a crystal reference of 19.6MHz - 28MHz. The 843081I-
01 has excellent 1ps or lower phase jitter performance, over
the 1.875MHz - 20MHz integration range. The 843081I-01 is
packaged in a small 8-pin TSSOP, making it ideal for use in
systems with limited board space.
FEATURES
• One differential LVPECL output
• One crystal oscillator interface: 19.6MHz - 28MHz
• Output frequency range: 490MHz - 700MHz
• VCO range: 490MHz - 700MHz
• RMS phase jitter @ 625MHz using a 25MHz reference
(1.875MHz - 20MHz): 0.32ps (typical)
• 3.3V or 2.5V operating supply
• -40°C to 85°C ambient operating temperature
• Available in lead-free RoHS compliant package
• For functional replacement part use 843071
FREQUENCY EXAMPLE FUNCTION TABLE
Input
XTAL (MHz)
20
25
28
M/N (Multiplier)
25
25
25
Output Frequencies (MHz)
500
625
700
BLOCK DIAGRAM
OE
XTAL_IN
XTAL_OUT
Phase
Detector
VCO
490 - 700 MHz
M = ÷25 (fixed)
843081I-01 REVISION C 11/5/15
1
PIN ASSIGNMENT
VCCA 1
8 VCC
XTAL_OUT 2
7Q
XTAL_IN 3
6 nQ
VEE 4
5 OE
Q
843081I-01
8-Lead TSSOP
nQ
4.40mm x 3.0mm x 0.925mm
package body
G Package
Top View
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