EURO
QUARTZ
Miniature 7 x 5 x 2.5mm SMD package
Frequency range: 1.25MHz to 156.0MHz
Supply voltage 3.3 Volts
Frequency stability ±2.5ppm over -30 to +85°C
Available with a fast turnround service
DESCRIPTION
The MB57T series TCXO is packaged in 7 x 5mm, 4 pad ceramic SMD
package. The part has a squarewave (CMOS) output and a stability of
±2.5ppm over the temperature range -30° to +85°C. The part has a
0.01mF decoupling capacitor built in and may be produced as a TCXO
or Voltage-Controlled TCXO (VCTCXO).
MB57T Series TCXO & VCTCXO
HCMOS 7 x 5 x 2.5mm SMD
MB57T - OUTLINES AND DIMENSIONS
SPECIFICATION
Product Series Code
TCXO:
VCTCXO:
Frequency Range:
Output Waveform:
Initial Calibration Tolerance:
Standard Frequencies:
MB57T
VMB57T
1.25MHz to 156.0MHz
Squarewave, HCMOS
<±2.0ppm at +25°±2°C
10.0, 12.8, 13.0, 14.4,
14.7456, 15.36, 16.384, 19.2,
19.440, 19.68, 25.0, 20.0,
27.0, 38.880, 40.0, 77.760,
125.0MHz (Partial
list)
±2.5ppm over -30°~+85°C
±1.0 ppm max. first year
±0.3 ppm max. ±5% change
±0.3 ppm max. ±10% change
±1.0ppm max. for one reflow
(Measured
after 24 hours)
+3.3VDC ±5%
Logic High: 90% Vdd min.
Logic Low: 10% Vdd max.
10ns max.
50%±10% standard,
50%±5% option
5ms typical, 10ms max.
4mA max.
17mA max.
35mA max.
15pF
-55~+125°C
Frequency Stability
vs. Temperature Change:
vs. Ageing:
vs. Voltage Change:
vs. Load Change:
vs. Reflow (SMD type):
Supply Voltage:
Output Logic Levels:
Rise and Fall Times:
Duty Cycle:
Start-up Time:
Current Consumption
at 10.0MHz:
at 77.60MHz:
at 155.520MHz:
Output Load:
Storage Temperature:
VMB57T VOLTAGE CONTROL SPECIFICATION
Standard = +1.5±1.0Volts
±6.0 ppm min. (Vcon = +4.5V±1.0V)
Positive
(increase of control voltage increases
output frequency.)
Input Impedance:
50k minimum
Modulation Bandwidth: 20kHz minimum
Linearity:
±10% maximum
Control Voltage:
Frequency Deviation:
Slope Polarity:
PART NUMBER FORMAT
SSB PHASE NOISE at 25°C
Offset
Part =
MB57T33
at 10.0Mhz
(dBc/Hz)
at 155.250Mhz
(dBc/Hz)
10Hz
-115
-72
100Hz
-135
-110
1kHz
-148
-125
10kHz
-152
-132
100kHz
-155
-125
Example:
MB57T33-38.880-2.5/-30+85
Series Description
TCXO = MB57T
VCTCXO = VMB57T
Supply Voltage 3.3VDC
Frequency (MHz)
Stability over OTR (±ppm)
Operating Temperature Range (OTR) (°C)
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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