Technical Guidance (176 kB)

TX7-705CM-SQ-CoSa
Analogue compensated high accurate and reliable
CMOS SMD TCXO
Application
COSPAS-SARSAT emergency beacon Class 1 & 2
Nominal Frequency Fo
10.000, 12.688375, 12.688656 MHz
12.800, 12.688750, 16.384, 20.000 MHz
Frequency stability:
vs. operating temperature range
vs. supply voltage
vs. load
vs. aging
Allan variance (ADEV)
≤ ±0.2 ppm
≤ ±0.2 ppm
≤ ±0.03 ppm
≤ ±0.01 ppm
≤ ±1.0 pm
≤ ±3.0 pm
1E-9
-40 ~ +55 °C
-20 ~ +55 °C
±5 %
±5 %
1st year
10 years
@  = 0.1s
Class 1 beacon
Class 2 beacon
Medium-term stability:
Mean slope F/dt after 15 min power-up:
steady state
during temperature ramp
Residual F (r.m.s.) from slope
IAW C/S T.007 and C/S IP TCXO
≤ ±0.7 ppb/min.
≤ ±1.7 ppb/min.
≤ 3.0 ppb
T = const.
T/dt = ± 5 °C/hour
over 18 points
Supply voltage
Supply current
Output signal
Output level
Output load
Symmetry (Duty)
Tri-state function
+3.3 V
4 mA
HCMOS
VOH > 0.9 Vdc
15 pF
45 ~ 55 %
pin # 9 high or open
pin # 9 low
-40 ~ +55 °C
-20 ~ +55 °C
-55 ~ +125 °C
±5 %
Max.
(optional)
Operating temperature range
Storage temperature range
Marking
VOL < 0.1 Vdc
@ ½ Vdc
pin # 6  oscillation
pin # 6  high Impedance
Class 1 beacon
Class 2 beacon
QCOM (date code)
frequency
code
Pin function
# 1
# 5
# 6
# 9
# 10
Solder pattern
GND or not connected
GND
Output
Tri-state
Vdc
Do not connect: #2, #3, #4, #7 & #8
Do not design any conductive path between the pattern
IR reflow soldering temperature
2002/95/EC RoHS compliant
QuartzCom AG
Bischmattstrasse 11
CH 2544 Bettlach
Switzerland
Fax
Tel
E-Mail
+41 32 644 24 05
+41 32 644 24 00
[email protected]
www.quartzcom.com
Page 1 of 2
22 Feb. 13
TX7-705CM-SQ-CoSa
Analogue compensated high accurate and reliable
CMOS SMD TCXO
Application
COSPAS-SARSAT emergency beacon Class 1 & 2
Medium term stability
Frequency stability measurement procedure according the COSPAS/SARSAT T0.007
Note:
The 2h and 1h warm-up and stabilisation times are for type approval test of complete beacon.
For testing of TCXO these times may be shortened accordingly.
Environmental
Reference STD.
Test condition
Vibration
sinusoidal
IEC 60028-2-6
IEC 60679-15.6.7
Shock
IEC 60028-2-27
IEC 60679-15.6.8
Solderability
IEC 60028-2-20
IEC 60028-2-58
IEC 60679-5.6.3
Test Fc, 30 min per axis
10 Hz – 55 Hz 0.75mm, 55 Hz – 2 kHz 10
g
Test Ea, 3 x per axes 100 g,
6 ms half-sine pulse
Test Ta (235 ±2) °C Method 1
Test Tb Method 1A, 5s
2002/95/EC RoHS compliant
QuartzCom AG
Bischmattstrasse 11
CH 2544 Bettlach
Switzerland
Fax
Tel
E-Mail
+41 32 644 24 05
+41 32 644 24 00
[email protected]
www.quartzcom.com
Page 2 of 2
22 Feb. 13