IDT8N3S271 Datasheet, PDF (1/19 Pages) Integrated Device Technology – Fourth generation FemtoClock

LVPECL Frequency-Programmable
Crystal Oscillator
IDT8N3S271
DATA SHEET
General Description
The IDT8N3S271 is a 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 factory programmed to any frequency in the range
from 15.476MHz to 866.67MHz and from 975MHz to 1,300MHz and
supports a very high degree of frequency precision of 218Hz or
better. 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
• 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 configuration
• 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 ^÷P
f_XTAL
2
Pullup
OE
PFD
&
LPF
FemtoClock® NG
VCO
÷N
1950-2600MHz
÷MINT, MFRAC
25
7
Configuration Register (ROM)
Pin Assignment
DNU 1
6 V_CC
Q
OE 2
5 nQ
nQ
V_EE 3
4Q
IDT8N3S271
6-lead ceramic 5mm x 7mm x 1.55mm
package body
CD Package
Top View
IDT8N3S271CCD REVISION A DECEMBER 17, 2012
1
©2012 Integrated Device Technology, Inc.