QUARTZ
EURO
EMQN576T
CMOS TCXO 7 x 5mm
10MHz to 245MHz
Low current consumption, CMOS TCXO
Quick turnaround, low-cost TCXO
Standard 5.0 x 7.0mm, 6 pad SMD package
Supply voltage 2.5V or 3.3 VDC
Member of the QuikXO family of products
EMQN576T - OUTLINES AND DIMENSIONS
DESCRIPTION
EMQN576T series TCXOs are packaged in a standard, 7.0 x 5.0mm
outline, SMD package. With squarewave (CMOS) output, tolerance is
from ±1.0ppm over -40° to +85°C. The part has low supply current,
24mA typical at 50MHz.
SPECIFICATION
Product Series Code
TCXO:
EMQN576T
VCTCXO:
VEMQN576T
Frequency Range:
Supply Voltage:
10.0MHz to 245MHz
+2.5VDC±5% or
+3.3Volts ±5%
Output Logic Levels:
Logic High: 90% Vdd min.
Logic Low: 10% Vdd max.
Squarewave, LVCMOS
0.8ps typical
Output Waveform:
Phase jitter rms (12kHz to 20MHz):
Initial Calibration Tolerance:
Frequency Stability
±2.0ppm at +25°±2°C
vs. Temperature:
-30° to +85°C:
±2.0ppm standard
±1.0ppm available
-40 to +85°C:
±2.5ppm standard
±1.0ppm available
vs. Ageing:
±1.0 ppm max. per year 25°C
±0.2 ppm max. ±5% change
±0.2 ppm max. ±10% change
±1.0ppm max. for one reflow
and measured after 24 hours.
1.5ns typ. 10% to 90% wavef.
50%±5% standard,
vs. Voltage Change:
vs. Load Change:
vs. Reflow (SMD type):
VEMQN576T VOLTAGE CONTROL SPECIFICATION
Control Voltage Centre & Range: +1.5V±1.0V
Rise/Fall Times:
Duty Cycle:
for both +2.5V and 3.3V supplies
±8 ppm min.
Positive
Frequency Pulling Range:
Slope Polarity:
Start-up Time:
Output Load:
5ms typical, 10ms max.
15pF
Current Consumption Vdd +2.5V
at 50MHz:
Linearity:
Input Impedance:
Harmonics:
±1% typical ±10% max.
770k typical
-5.0dBc max.
24mA typical
28mA typical
30mA typical
at 125MHz:
at 200MHz:
Current Consumption Vdd +3.3V
at 50MHz:
26mA typical
30mA typical
34mA typical
18mA typical
5ms max.
SSB PHASE NOISE and PHASE JITTER DATA
at 125MHz:
at 200MHz:
Current with output disabled:
Start-up Time:
Phase Jitter rms (12kHz to 20MHz):
(Typical VDD = +3.3V, V Control = 0.0V) dBc/Hz
Frequency
10Hz Offset
100Hz
96MHz
-71
192MHz
-56
0.8ps typ., 1.0ps max.
Phase Jitter rms (1.875MHz to 20MHz):200fs max.
-96
-91
1kHz
-114
-124
-108
-119
PART NUMBERS
10kHz
Example:
_EMQN576T33-50.000-2.5/-30+85
100kHz
1MHz
-127
-134
-153
-154
-156
-122
-128
-151
-153
-152
Series Description
TCXO = EMQN576T
VCTCXO = VEMQN576T
5MHz
10MHz
20MHz
Supply Voltage Code
3.3V = 33
2.5V = 25
Frequency (MHz)
Phase Jitter ps
12kHz - 20MHz rms
0.85
0.77
Stability over OTR (±ppm)
Operating Temperature Range (OTR) (°C)
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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