Data Sheet - Euroquartz

EURO QUARTZ
CX1H CRYSTAL
Miniature Crystal for Series Oscillators
10kHz to 600kHz
FEATURES
Frequency Range 10kHz to 600kHz
High shock resistance
Low ageing
Designed for low power applications
Full MIL testing available
OUTLINE & DIMENSIONS
DESCRIPTION
CX1H crystals consist of a high quality tuning fork resonator in a
rugged, hermetically sealed ceramic package. CX1H is intended for
use in Series (two cascaded inverters) oscillator circuits.
SPECIFICATION
Specifications stated are typical at 25°C unless otherwise indicated.
Specifications may change without notice.
Frequency Range:
10.0kHz to 600.0kHz
Standard Calibration Tolerance*: see table
Motional Resistance (R1):
Figure 1
Max = 10~169.9kHz, 2x typical
170~600kHz, 2.5x typical
Motional Capacitance (C1):
Figure 2
Quality Factor (Q):
Figure 3
Min. is 0.25x typical
Shunt Capacitance (C0):
2.0pF max.
Drive Level
10~24.9kHz:
1.5µW max.
25~600.0kHz: 3.0µW max.
Turning Point (T0)**:
Figure 4
Temperature Coefficient (k):
-0.035ppm/°C2
Ageing, first year:
5ppm max.
Shock, survival***:
1,000g, 1ms, ½ sine
Vibration, survival***:
20g rms, 10~2000Hz
Operating Temperature Range
Commercial:
-10° to +70°C
Industrial:
-40° to +85°C
Military:
-55 to +125°C
Storage Temperature Range:
-55° to +125°C
Maximum Process Temperature:
See package handling notes
STANDARD CALIBRATION TOLERANCE
Frequency Range (kHz)
16~74.9
75~169.9
±30ppm
±50ppm
170~249
±100ppm
250~600
±200ppm
* Tighter frequency calibration is available.
** Other turning point is available
*** Higher shock and vibration survival is available
PACKAGING
CX1Hcrystals are Tray Packed as standard.
HOW TO ORDER CX1H LEADED CRYSTALS
CX1H - S
-
03
-
Side Leads
'S' if special,
custom design. 03 = Non RoHS
Compliant
Otherwise leave
05 = RoHS
blank
Compliant
32.768K,
Frequency
K = kHz
30
Calibration
Tolerance
@25°C
(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 info@euroquartz.co.uk www.euroquartz.co.uk
EURO QUARTZ
CX1H CRYSTAL
Miniature Crystal for Series Oscillators
CRYSTAL EQUIVALENT CIRCUIT
R1 Motional Resistance
C1 Motional Capacitance
10kHz to 600kHz
FIGURE 1
CX1H Typical Motional Resistance R1
L1 Motional Inductance
C0 Shunt Capacitance
CONVENTIONAL SERIES OSCILLATOR CIRCUIT
FIGURE 2
CX1H Typical Motional Capacitance C1
FIGURE 3
CX1H Typical Quality Factor (Q)
Turning Point Temperature
Note: Frequency f at temperature T is related to frequency F0 at
turning point temperature To by:
f-fo
=k(T-To)2
fo
PACKAGE HANDLING
The CX crystal is hermetically sealed in a ceramic package. Normal
handling and soldering precautions for small, low thermal mass parts
are adequate when installing or testing CX crystals. CX crystals may
be wave soldered with proper precaution taken to avoid desoldering
the leads. A slow machine rate or too high a pre-heat temperature or
solder bath temperature may damage the crystals. Lead to package
solder interface temperature should not exceed 175°C, glass lid
to package seal rim temperature should not exceed 210°C. If
the seal rim reaches temperatures above the maximum specified, the
package may lose its hermeticity. Loss of hermeticity results in a
frequency decrease and motional resistance increase.
FIGURE 4
CX1H Typical Turning Point Temperature (To)
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