EURO
QUARTZ
CXOXHT HIGH TEMPERATURE OSCILLATORS
High Temperature/High Shock
FEATURES
High temperature operation up to 225°C
Excellent stability over temperature
Fast start-up
High shock resistance
CMOS/TTL compatible output
Low EMI emission
Hermetically sealed ceramic package
1.0MHz to 50.0MHz
OUTLINE & DIMENSIONS
DESCRIPTION
For applications with high operating temperatures such as downhole
instrumentation, rotary shaft sensors and underground boring tools.
SPECIFICATION
Specifications are typical at 25°C unless otherwise indicated. Tighter
specifications are available, contact Euroquartz technical sales.
Supply Voltage:
+3.3 or +5.0Volts ±10%
Calibration Tolerance:
±50ppm or tighter as reqd.
Frequency Stability
25° ~ +150°C: ±100ppm
25° ~ +175°C: ±150ppm
25° ~ +225°C: ±175ppm
Supply Current (Typical)
3.3V
5.0V
24MHz:
3.0mA
8.0mA
32MHz:
5.0mA
10.0mA
50MHz:
6.0mA
14.0mA
Output Load (CMOS):
15pF
Start-up Time:
5ms max.
Rise/Fall Time:
10ns typical
Duty Cycle:
60/40%
Ageing first year:
±5ppm max. at 25°C
Ageing:
±100ppm max. at 200°C
Shock Survival
Standard:
3,000g, 0.3ms, ½ sine
HG version:
10,000g, 0.3ms, ½ sine
Vibration Survival:
20g, 10~2000Hz swept sine
Operating Temp. Range:
-55°C to 225°C
ENABLE/DISABLE OPTIONS (E/N)
CXOXHT oscillators have two enable/disable options, designated E &
N. The E version has a tristate output and stops oscillating internally
when the output is placed in a high Z state. The N version does not
have the control pin, Pin1, connected internally so there is no
enable/disable function with this option.
PACKAGING OPTIONS
CCXOXHT oscillators are available either tray packed <250pcs, or
tape and reel >250 pieces.
16mm tape, 178mm or 330mm reels (EIA 418).
ENABLE/DISABLE OPTION E - FUNCTION TABLE
Enable (Pin1 High*)
Output
Oscillator
Current
Frequency Output
Oscillates
500µA @25°C
Disable (Pin 1 Low)
High Z state
Stops
3.2µA @25°C
*When Pin 1 is allowed to float it is held by an internal pull-up resistor
HOW TO ORDER CXOXHT OSCILLATORS
CXOXHT
Package Type
CXOMHT
CXOXHT
4
Supply Voltage
4 = 3.3V
5 = 5.0V
S
Blank
= standard
S = special
or custom
HG
E
Enable/Disable
option E or N
SM1
-
20.0M
Frequency
M = MHz
– /
Calibration
Tolerance
at 25°C
in ppm
–
/
200
Total
Frequency
Tolerance
(±ppm)
/
H
Shock Level
Blank =
standard
HG =
high shock
Terminations
Blank = SM1 =Gold plated
SM3 = Solder dipped
SM5 = Solder dipped
(lead free)
Frequency
Stability
over
temperature
range
(±ppm)
Temp. Range
H = 25° to 200°C
S = customer
specified temp.
range
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
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