TEMPERATURE SENSING QUARTZ CRYSTAL RESONATOR
RKT206
APPLICATIONS
RKT206 is a quartz crystal resonator used to sense temperature changes. The
crystal is designed for precision electronic thermometers and temperature
controllers for conversion of temperature to frequency.
FEATURES
High shock and vibration characteristics
Miniature size
Wide temperature range (-50…+100 °C)
Low power consumption
Suitable for DTCXO and temperature test equipment
ELECTRICAL CHARACTERISTICS (at temperature 37 °C) / OPERATING CONDITIONS
-
-
-
-
-
PARAMETERS
Package size
Frequency range, f
O
Frequency Tolerance typ./max.,
∆f/f
O
Resonance resistance typ./max., R
r
Static Capacitance typ., C
O
Capacitance ratio r
Drive level max., D
L
Insulation resistance min.
SPECIFICATIONS AND REMARKS
DS26 (DT26). Diameter 2 mm / length 6 mm
UNITS
mm
kHz
ppm
kΩ
pF
µW
MΩ
Electrical characteristics at temperature 37 °C
32.000…36.000
±
150
75/95
1.3
±
0.2
870
1.0
500
Motional characteristics
Frequency vs. Temperature f
T
=f
O
+A
1
*(T-T
O
) +A
2
*(T-T
O
)
2
,
There: f
T
– crystal frequency at temperature T (°C),
f
O
–
crystal frequency at reference temperature T
0
(°C),
T
O
– reference temperature (°C).
For higher accuracy
f
T
can be represented by a third order polynomial as follow:
f
T
=f
O
+A
1
*(T-T
O
)+A
2
*(T-T
O
)
2
+A
3
*(T-T
O
)
3
1st order temperature coefficient A
1
*
2nd order temperature coefficient A
2
*
3rd order temperature coefficient A
3
*
Aging first year/10 years max.
Thermal time constant in liquid
τ
Operation conditions
-1.811
±
0.06
-0.0028
±
0.0001
7.6 * 10
-6
±
5 /
±
10
5
K
-1
K
-2
K
-3
ppm
sec
Operating temperature, T
OPR
(typ/max)
Storage temperature, T
STR
Shock resistance,
∆f/f
0
Vibration resistance,
∆f/f
0
*A
1
, A
2
and A
3
coefficients can be changed on request.
-50…+100 / -269…+125
-55…+85
Drop test 3 times on hard wooden board, height 100cm
5000g., 0.2 ms / ±5 ppm max.
10g / 10-2000 Hz, 8 hours / ±5 PPM max.
°C
°C
ppm
ppm
UNITS: millimeters
PACKAGE DIMENSIONS
6.1
5...9
2
dia
0,2
dia
GmbH & Co. KG
Wasemweg 5
D-74821 Mosbach
Germany
0,7...0,8
www.AXTAL.com
fon: +49 (6261) 939834
fax: +49 (6261) 939836
E-mail:
info@axtal.com
page
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