Data Sheet

EURO QUARTZ
CXOX OSCILLATOR
Fast Start-up/Tight Tolerance/High Shock
32.768kHz
Actual Size
FEATURES
Fast start-up
Tight tolerance
High shock resistance
Optional Enable/Disable with Tri-State
Low EMI emission
Full military testing available
Hermetically sealed package
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OUTLINE & DIMENSIONS
DESCRIPTION
CXOX oscillators are 32.768kHz, ultra-miniature, surface mount units
packaged in a 3.40 x 2.50 x 1.12mm package. The oscillators have
been designed to provide a fast start-up time with tight frequency
stability over a wide operating temperature range of -55° to +125°C.
The design of the part ensures there is a significantly greater ability to
withstand significantly higher shock levels than standard tuning fork
crystal designs.
SPECIFICATION
Specifications are typical at 25°C unless otherwise indicated. Tighter
specifications are available, contact Euroquartz technical sales.
Frequency:
32.768kHz
Supply Voltage:
+3.3 Volts ±10%
Calibration Tolerance:
±25ppm
Frequency Stability
over Operating Temperature Range
Commercial (0° ~ +70°C): ±10 to ±50ppm
Industrial(-40° ~ +85°C):
±20 to ±100ppm
Military (-55° ~ +125°C):
±50 to ±100ppm
Typical Input Current:
650µA
Output Load:
15pF (CMOS)
Rise Time:
85ns typical, 160ns maximum
Fall Time:
45ns typical, 100ns maximum
Duty Cycle:
45/55%
Ageing First Year:
±5ppm
Shock, Survival:
Standard: 5000g, 0.3ms, ½ sine
HG: 10,000g, 0.3ms, ½ sine
Vibration Survival:
20g, 10~2000Hz swept sine
Maximum Process Temperature:
260°C for 20 seconds
Storage Temperature:
-55° to +125°C
ENABLE/DISABLE OPTIONS
There are two Enable/Disable options available, 'E' and 'N'. The 'E'
option stops oscillating when the output is put into the High Z state.
the 'N' version does not have Pad 1 connected internally. the table
below describes the 'E' Enable/Disable option.
Enable (Pad 1 High) Disable (Pad 1 Low)
Output
Oscillator
Current
Frequency Output
Oscillates
Normal
High Z state
Stops
Very Low
When Pad 1 is allowed to float it is held high by an
internal pull-up resistor.
PACKAGING OPTIONS
CXOX oscillators are available either tray packed (<250pcs) or tape
and reel (>250 pieces).
12mm tape, 178mm or 330mm reels (EIA 418).
HOW TO ORDER CXOX 32.768kHz SMD CRYSTAL OSCILLATORS
CXOX
HG
Shock Level
Blank = Std.
HG = High Shock
4
Supply Voltage
1 = 1.8V
2 = 2.5V
3 = 3.0V
4 = 3.3V
5 = 5.0V
S
N
Enable/Disable
option, E or N
Blank = standard
S = special or
custom
-
SM3 , - 32.768k / 30
Terminations
Blank = SM1
=Gold plated
SM3 = Solder dipped
SM5 = Solder dipped
(SM1 and SM5 are pB free)
Frequency
in MHz
/
Calibration
Tolerance
at 25°C
(in ±ppm)
30
/
–
I
Temp. Range
C = -10° ~ +70°C
I = -40° ~ +85°C
M = -55° ~ +125°C
S = Customer specified
Frequency
Stability over
Temp. Range
(in ppm)
OR
/ –
/
–
/ 50
Total
Frequency
Tolerance
(in ppm)
/
I
Temp. Range
C = -10° ~ +70°C
I = -40° ~ +85°C
M = -55° ~ +125°C
S = Customer specified
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
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