EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001
info@euroquartz.co.uk
www.euroquartz.co.uk
EURO QUARTZ
8 pin Dual-in-Line MIL SPECIFICATION
Page 1 of 2
DESCRIPTION
EQXO-2000BM series oscillators are designed and manufactured by
Euroquartz Ltd for aerospace, defence and similar applications where
high-reliability clock oscillators are required. The oscillator is produced
in the industry-standard 8 pin DIL oscillator package. EQXO-2000BM
series oscillators incorporates a custom designed, all-ceramic
oscillator substrate and a ruggedized three-point crystal mounting
system inside a hermetically-sealed metal package. The specification
ensures that EQXO-2000BM series oscillators provide an accurate and
reliable source of clock signals regardless of the severity of the
environment in which it operates.
RADIATION TOLERANCE
For equipment to be used in space or the upper atmosphere the
EQXO-2000BM series oscillators may be produced in a radiation
tolerant version. Designated EQXO-2000BMH, this variant of the
oscillator will withstand ionizing radiation to resist electrical failures
for a total radiation dose of 40krad(SI).
OUTLINE & DIMENSIONS
Model No:
EQXO-2000BM
Frequency Range:
30kHz to 70.0MHz
Calibration Tolerance at 25°C:
±10ppm to ±25ppm
Frequency Stability*
EQXO-2100BM:
±100ppm over -55° to +125°C
EQXO-2050BM:
±50ppm over -55° to +125°C
Supply Voltage:
+5.0 Volts DC±10%
Output:
CMOS, 50pF/10 TTL loads
Ageing:
±3pm max in first year
Symmetry:
45%/55%
Operating Temperature Range:
-55° to +125°C
Storage Temperature Range:
-55° to +125°C
Construction:
Ceramic substrate, resistance
welded can.
* Frequency stability is inclusive of frequency adjustment at 25°C and
any variations due to load change, ageing, supply voltage change
(±10%) and variations attributable to shock and vibration, (see
Qualification Approval and Environmental Specification.)
SPECIFICATION
30kHz ~ 1.0MHz
10
1.0MHz ~ 4.0MHz
15
10
4.0MHz ~ 20MHz
20
10
20MHz ~ 35MHz
35
10
35MHz ~ 50MHz
40
5
50MHz ~ 65MHz
70
5
Frequency Range
Supply Current
(mA max.)
Rise/Fall Time
(ns max.)
CURRENT CONSUMPTION /RISE & FALL TIMES
FEATURES
Ceramic substrate and ruggedized mounts for high reliability
Industry-standard 8 pin DIL package for ease of design
Full screening to MIL-O-55310C, Class B available
Radiation tolerant version favailable for space applications
EQXO-2050BM
±10ppm
±50ppm
No
EQXO-2100BM
±25ppm
±100ppm
No
EQXO-2050BMH
±10ppm
±50ppm
Yes
EQXO-2100BMH
±25ppm
±100ppm
Yes
Model Number
Calibration
Tolerance
at 25°C
Frequency
Stability
-55° to +125°C
Radiation
Tolerant
MODEL NUMBERS
PART NUMBER GENERATION
Frequency / Model Number / Plating* / Screening (if required)
Example: 10.000MHz EQXO-2100BMH Screened
*Note: Lead and base plating is gold flashed over nickel as standard.
If nickel plating only is required enter / - nickel / in this position.
MIL SCREENING
EQXO-2000BM series oscillators may be ordered screened
i.a.w. the schedules detailed in 'Qualification Approval and
Environmental Specification' on page 2 of this specification.
EQXO-2000BM OSCILLATORS
30kHz to 70MHz