QUARTZ
EURO
TCXO
EM14K ULTRA-LOW CURRENT
14 pin Dual-in-Line TCXO
Highly stable CMOS TCXO with ultra-low supply current
Industry-standard package
Consumes less than 4mA at 20.0MHz with 3.3V supply
Low phase noise
RoHS compliant
OUTLINES AND DIMENSIONS
DESCRIPTION
EM14K TCXOs and VCTCXOs are packaged in a 14 pin DIL package.
The part offers the stability of a TCXO and the design convenience of
HCMOS output with ultra-low current consumption.
SPECIFICATION
Product Code
TCXO:
EM14K
VCTCXO:
VEM14K
Frequency Range:
Output Waveform:
12.8MHz to 26.0MHz
HCMOS
Initial Calibration Tolerance:
Standard Frequencies:
<±2.0ppm at +25°±2°C
12.8, 13.0, 14.4, 15.36, 16.0,
16.384, 16.8, 19.2, 19.44,
19.68, 20.0 and 26.0MHz
(Partial list.)
Operating Temperature Range:
Frequency Stability
vs. Temperature
See table
See table
vs. Ageing:
vs. Voltage Change:
vs. Load Change:
±1.0 ppm max. first year
±1.0 ppm max. ±10% change
±0.3 ppm max. ±10% change
±1.0ppm max. for one reflow
(Measured after 24 hours)
+2.8, 3.0 or 3.3 Volts
See table
See table
4ns typical with 15pF load
50%±5%
vs. Reflow (SMD type):
Supply Voltage:
Current Consumption:
Output Logic Levels:
Rise and Fall Times:
Duty Cycle:
Start-up Time:
Output Load:
5ms typical, 10ms max.
15pF
Fanout (drive capability):
12mA typical, 17mA max.
(at TTL level)
RMS Period Jitter:
3ps max. (1 Sigma, 1000
samples; capacitive coupling
between Vdd and Ground).
RoHS compliant and pB free
16mm tape, 8mm pitch
1000 pieces per reel.
VEM14K VOLTAGE CONTROL SPECIFICATION
Control Voltage:
Slope Polarity:
±5 to ±12ppm for +1.5 ±1.5 Volts
Positive (increase of control voltage increases
output frequency.)
RoHS Status:
Packaging:
Linearity:
6% typical, 10% maximum
CURRENT CONSUMPTION
Input Voltage
+3.0V
Frequency
+2.8V
+3.3V
SSB PHASE NOISE at 25°C
12.800MHz
13.000MHz
14.400MHz
16.384MHz
19.200MHz
19.440MHz
20.000MHz
26.000MHz
2.3mA typ.
2.5mA typ.
2.6mA typ.
2.8mA typ.
3.2mA typ.
3.2mA typ.
3.2mA typ.
3.6mA typ.
2.4mA typ. 2.6mA typ.
2.6mA typ. 2.8mA typ.
2.8mA typ. 3.1mA typ.
3.0mA typ. 3.2mA typ.
3.3mA typ. 3.6mA typ.
3.4mA typ. 3.7mA typ.
3.4mA typ. 3.7mA typ.
3.8mA typ. 4.1mA typ.
Offset
100Hz
1kHz
10kHz
100kHz
1MHz
Part =
VEM14K30
at 13.000MHz
(dBc/Hz)
-80
-110
-130
-135
-142
PART NUMBER FORMAT
Example:
EM14K33-20.000-2.5/-30+75
FREQUENCY STABILITY OVER TEMPERATURE
Series Description
TCXO = EM14K
VCTCXO = VEM14K
Stability (ppm)
0 ~ +50
±1.0
P
±2.0
P
±2.5
P
±3.0
P
±4.0
P
±5.0
P
Supply Voltage
28=2.8V, 30=3.0V, 33=3.3VDC
Frequency (MHz)
Stability over OTR (±ppm)
Operating Temperature Range (OTR)
Lower and upper limits (°C)
-10 ~ +60
-20 ~ +70
-30 ~ +75
-40 ~ +85
ASK
X
P
P
P
P
P
Temp.
Range (°C)
P
P
P
P
P
P
X
P
P
P
P
X
X
X
ASK
ASK
P
P = available, x = not available, ASK = call Technical Sales
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
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