Data Sheet

EURO QUARTZ
CX1V CRYSTAL
Miniature Crystal for Pierce 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
CX1V crystals consist of a high quality tuning fork resonator in a
rugged, hermetically sealed ceramic package. CX1V is intended for
use in Pierce (single inverter) 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:
0.5µW max.
25~600.0kHz: 1.0µW max.
Turning Point (T0)**:
Figure 4
Temperature Coefficient (k):
-0.035ppm/°C2
Ageing, first year:
5ppm max.
Shock, survival***:
1,000g peak, 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
* Tighter frequency calibration is available.
** Other turning point is available
*** Higher shock and vibration survival is available
STANDARD CALIBRATION TOLERANCE
Frequency Range (kHz)
16~74.9
75~169.9
±30ppm
±50ppm
170~249
±100ppm
250~600
±200ppm
LOAD CAPACITANCE (CL)*
Frequency
Range (kHz)
PACKAGING
10~15.9
16~24.9
25~54.9
CX1V crystals are Tray Packed as standard
Load
Capacitance
11pF
10pF
9pF
Frequency
Range (kHz)
55~99.9
100~179.9
180~600
Load
Capacitance
8pF
5pF
4pF
* The load capacitance we use to calibrate CX1V.
(Other CL is available.)
HOW TO ORDER CX1V LEADED CRYSTALS
CX1V - S
-
03
- 32.768K,
Side Leads
'S' if special,
custom design. 03 = Non RoHS
Compliant
Otherwise leave
05 = RoHS
blank
Compliant
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 [email protected] www.euroquartz.co.uk
EURO QUARTZ
CX1V CRYSTAL
Miniature Crystal for Pierce Oscillators
CRYSTAL EQUIVALENT CIRCUIT
R1 Motional Resistance
C1 Motional Capacitance
10kHz to 600kHz
FIGURE 1
CX1V Typical Motional Resistance R1
L1 Motional Inductance
C0 Shunt Capacitance
CONVENTIONAL CMOS PIERCE OSCILLATOR CIRCUIT
FIGURE 2
CX1V Typical Motional Capacitance C1
Turning Point Temperature
FIGURE 3
CX1V Typical Quality Factor (Q)
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
CX1V Typical Turning Point Temperature (To)
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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