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EX-380-DAD-ST3F-10.23MHZ

Description
OCXO, CLOCK, 10.23 MHz, HCMOS OUTPUT
CategoryPassive components    oscillator   
File Size770KB,7 Pages
ManufacturerVectron International, Inc.
Websitehttp://www.vectron.com/
Environmental Compliance  
Download Datasheet Parametric View All

EX-380-DAD-ST3F-10.23MHZ Overview

OCXO, CLOCK, 10.23 MHz, HCMOS OUTPUT

EX-380-DAD-ST3F-10.23MHZ Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerVectron International, Inc.
Reach Compliance Codecompliant
Ageing0.1 PPM/FIRST YEAR
Frequency Adjustment - MechanicalNO
Frequency Stability - Voltage0.0025 ppm
input power0.297 W
JESD-609 codee1
Manufacturer's serial numberEX-380
Installation featuresTHROUGH HOLE MOUNT
Nominal operating frequency10.23 MHz
Maximum operating temperature70 °C
Minimum operating temperature-20 °C
Oscillator typeHCMOS
Oven power supply voltage3.3V
physical size20.83mm x 13.21mm x 7.62mm
Nominal supply voltage3.3 V
surface mountNO
Terminal surfaceTIN SILVER COPPER
Preheating power1.485 W
Maximum warm-up time2 Minute
Base Number Matches1
Application Note
EX-380/385 Series
4 Pin Dip Evacuated Miniature Crystal Oscillator
(EMXO)
TM
Supply Voltage:
3.3 Vdc,
5 Vdc or 12 Vdc available
Aging: <1x10
-9
/day, <1x10
-7
/year, <1x10
-6
/10 years
Temperature Stability: to ±7.5x10
-8
over -20
o
C to +70
o
C
Acceleration Sensitivity: 1x10
-9
/g, Total Gamma
Uses SC Family 3
rd
Overtone Crystal
Low Power Consumption: <0.35 watts @ +25
o
C
Frequencies: 10 to 20 MHz (other frequencies in development)
Fast Warm-up: 1 to 2 minutes
Patented Technique*
Notes: 1. We acknowledge the support of
the U.S. Army for work on
resonators associated with this
product under contract #1X66001-
97-C-8635.
*U.S. Patent 5,917,272.
SONET / SDH, DWDM, FDM, ATM, 3G
Telecom Transmission and Switching Equipment
Wireless Communication Equipment
Military Airborne and Mobile systems
OCXO’ (Oven Controlled Crystal
s
Oscillators) are used when frequency vs.
temperature requirements are too stringent to
be met by a basic XO (Crystal Oscillator) or
TCXO (Temperature Compensated Crystal
Oscillator). With an OCXO, the temperature
of the crystal and critical circuits are kept
constant as the temperature outside the
oscillator varies. Controlling the temperature
inside the oscillator with an oven maintains
this constant temperature. In an OCXO, the
changes in the ambient temperature are
sensed and then fed back to an oven control
that continually maintains a constant optimum
temperature inside the oscillator enclosure.
An OCXO can improve the crystal's inherent
stability by more than 5000 times. The
oven control system is not perfect, the open
loop gain is not infinite, there are internal
temperature gradients inside the oven
(oscillator) and, in a conventional oven, the
circuitry outside the oven shell is subjected to
ambient temperature changes that can "pull"
the frequency.
The improved temperature stability
performance of a conventional OCXO over an
XO or TCXO comes at a steep price. OCXO
power consumption, for instance, is greater
by a factor of over 200. There is also a size
consideration. In an ordinary OCXO, a
crystal is enclosed in a metal case which is
then placed inside an oven shell together with
temperature sensitive circuitry, and then
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 •Web: www.vectron.com
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