IDT8N3D085 Datasheet, PDF (1/19 Pages) Integrated Device Technology – Fourth generation FemtoClock

LVPECL Dual Frequency
Programmable Crystal Oscillator
IDT8N3D085
DATA SHEET
General Description
The IDT8N3D085 is a LVPECL Dual Frequency-Programmable
Crystal Oscillator with very flexible frequency programming
capabilities. The device uses IDT’s fourth generation FemtoClock^®
NG technology for an optimum of high clock frequency and low phase
noise performance. The device accepts 2.5V or 3.3V supply and is
packaged in a small, lead-free (RoHS 6) 6-lead ceramic 5mm x 7mm
x 1.55mm package.
The device can be programmed to any frequency in the range from
15.476MHz to 866.67MHz and from 975MHz to 1,300 MHz and
supports a very high degree of frequency precision of 218Hz or
better. One of two pre-set output frequencies is selected by the
FSEL pin.The extended temperature range supports wireless
infrastructure, telecommunication and networking end equipment
requirements.
Features
• Fourth generation FemtoClock^® NG technology
• Factory-programmable clock output frequency from
15.476MHz to 866.67MHz and from 975MHz to 1,300MHz
• Frequency programming resolution is 218Hz and better
• One 2.5V or 3.3V LVPECL clock output
• Output enable control (positive polarity), 
LVCMOS/LVTTL compatible
• LVCMOS compatible control inputs
• RMS phase jitter @ 156.25MHz (12kHz - 20MHz): 
0.24ps (typical), integer PLL feedback configuration
• RMS phase jitter @ 156.25MHz (1kHz - 40MHz):
0.27ps (typical), integer PLL feedback configurationally
• 2.5V or 3.3V supply
• -40°C to 85°C ambient operating temperature
• Available in a lead-free (RoHS 6) 6-pin ceramic package
Block Diagram
OSC
f_REF
PFD
÷P _&
LPF
FemtoClock^® NG
VCO
÷N
1950-2600MHz
÷MINT, MFRAC
2
FSEL
OE
Pulldown
Pullup
25
7
Configuration Register (ROM)
Pin Assignment
OE 1
6 VCC
Q
FSEL 2
5 nQ
nQ
VEE 3
4Q
IDT8N3D085
6-lead ceramic 5mm x 7mm x 1.55mm
package body
CD Package
Top View
IDT8N3D085CCD REVISION A DECEMBER 14, 2012
1
©2012 Integrated Device Technology, Inc.