VECTRON EX-380 User Manual

Product Data Sheet

EX-380 Series

4 Pin DIP & SMD Evacuated Miniature Crystal Oscillator

EMXO™

Features

• Supply Voltage: 3.3 Vdc or 5 Vdc

• Aging: <1x10

-9

/day, <1x10

-7

/year (@ 10 MHz)

• Temperature Stability: to ±7.5x10

-8

over -20°C to +70°C

• Acceleration Sensitivity: 1 x10

-9

/g, Total Gamma

• Uses SC Family 3rd Overtone Crystal

• Low Power Consumption: <0.35 watts @ +25°C

• Frequencies: 10 to 80 MHz for HCMOS or Sinewave outputs

• Fast Warm-up: 1 to 2 minutes

• Patented Technique*

Applications

• SONET/SDH, DWDM, FDM, ATM, 3G

• Telecom Transmission and Switching Equipment

• Wireless Communication Equipment

• Military Airborne and Mobile systems

Description

The model EX-380 Series is a low profile DIP or SMD, Evacuated
Miniature Oven Controlled Crystal Oscillator (EMXO),
available in frequencies from 10 MHz to 80 MHz.

The EX-380 Series provides exceptionally low aging rates and high
temperature stabilities in an extremely small package over a
wide range of environmental conditions. The through hole
unit measures only 20.8mm x 13.2mm x 7.6mm (0.82" x

0.52" x 0.30"), @ 10 MHz provides aging rates of <1x10­9/day average, <1x10-7for the first year and <1x10

-6

for 10
years with temperature stabilities to ±1x10-7over -40°C to
+85°C. Wider temperature ranges are available from -55°C to
+85°C. This is achieved by the application of new resonator
design concepts and technological breakthroughs. This
series of EMXO's bridges the gap between current large,
high precision OCXO's and smaller TCXO'S. The EX-380
Series becomes the most economical choice where there is
a need for spectral purity, short and long term stability, along
with small size and dramatically reduced power consumption.

Standard supply voltages for the EX-380 series are 3.3 Vdc and 5Vdc,
with HCMOS or Sinewave output options. A surface mount
version of this oscillator is available (EX-381/5). Sinewave
output is only available in the surface mount, EX-381, version.

Notes: 1. We acknowledge the support
of the U.S. Army for work on resonators
associated with this product under
contract #1 X66001 - 97-C-8635.

*U.S. Patent 5,917,272.

查询EMX-380供应商

EX-380 Evacuated Miniature Oven Controlled Crystal Oscillator

Performance Characteristics for frequencies in the range 10 to 20.48 MHz

Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com

2

Available Frequencies 10 to 20.48 MHz (See Page 6 for specific Freq's)

Size See page 4 for outline Drawings and Dimensions

Supply Voltage (C) 5.0 Vdc ±5%

(D) 3.3 Vdc ±5%

Supply Current (Steady State) < 70 mA @ +25°C and 5 Vdc , <90 mA @+25C and 3.3Vdc

<120 mA @ -40°C and 5 Vdc, <150 mA @-40C and 3.3Vdc

Turn-on current 300 mA maximum @ 5.0 Vdc , 450 mA maximum @ 3.3V

Output Type (A) HCM0S, (G or H) Sinewave into 50 ohms

Levels (A) <0.4 Volts, >0.9 Vdd, (G) 0 dBm, (H) +3 dBm

Symmetry (at 50% Vdd) (A) 50/50 ±10%

Rise/Fall Time (10%-90%) (A) <7 ns

Stability vs.Temperature D-107 = ±0.1 ppm over -20°C to +70°C

D-ST3 = Stratum 3 over -20°C to +70°C
F-ST3 = Stratum 3 over -40°C to +85°C
F-107 = ±0.1 ppm over -40°C to +85°C

x-ST3 = Stratum 3 Holdover stability per GR-1244-CORE

280 ppm pk-pk over temperature, < 40 ppb drift.

Aging <1 x 10-9/day average, <1 x 10

-7

/

year,

(10 MHz Typical) <1 x 10

-6

/10 years

Short -Term Stability (Allan Deviation) <5 x 10

-10

, 0.1 seconds to 10 seconds

Phase Noise (Static Conditions) Offset PhaseNoise

10 Hz -100 dBc/Hz

100 Hz -130 dBc/Hz
1 kHz -140 dBc/Hz
10 kHz -145 dBc/Hz

100 kHz -150 dBc/Hz

Frequency vs. Supply <2.5 x 10-9per percent change

Warm-up (Restabilization) Standard Optional (consult factory)

(frequency relative to that 1 hour after turn-on, < ±1 x 10

-6

60 seconds 45 seconds

following 24 hours off time, at +25°C) < ±1 x 10

-7

120 seconds 90 seconds

Electrical Frequency Adjust A: >±1 ppm range with 0 to Vdd input voltage

Initial Accuracy for Fixed Frequency F: ±1 ppm @ +25°C

Acceleration Sensitivity 1 x 10-9/g Total Gamma, standard

(10 MHz) (5 x 10

-

10

/g available at 10 MHz consult factory)

Parameter Characteristics

NO

TE:

Tighter stabilities and
wider temperature ranges
are available, please consult
the factory.

Tighter stabilities and
wider temperature ranges
are available, please consult
the factory.