Data Sheet

EURO QUARTZ
MB42T TCXO
11.4 x 9.6 x 2.5mm 4 pad SMD HCMOS
Quick turnaround production
Low Jitter: 70ps peak to peak (typical)
Low phase noise: -114dBc at1kHz offset (133MHz)
Custom frequencies are easily configured
Supply voltages 2.8V, 3.0V or 3.3VDC
TCXO or VCTCXOs CMOS square wave output
MB42T - OUTLINES AND DIMENSIONS
DESCRIPTION
The MB42T TCXO is packaged in 7 x 5mm, 4 pad ceramic SMD
package. The part has a squarewave (CMOS) output and a tight
stability over temperature. The part may be specified as a TCXO or a
Voltage-Controlled TCXO (VCTCXO). A 0.01mF decoupling capacitor
is built-in.
SPECIFICATION
Product Series Code
TCXO:
VCTCXO:
Frequency Range:
Output Waveform:
Initial Calibration Tolerance:
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 25.0MHz:
at 200.0MHz:
Output Load:
Storage Temperature:
RoHS Status:
MB42T
VMB42T
1.0MHz to 200.0MHz
Squarewave, HCMOS
<±2.0ppm at +25°±2°C
See table
±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)
+2.8VDC ±5%
+3.0VDC ±5%
+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.
8mA max.
20mA max.
15pF
-55~+125°C
RoHS Compliant and pB free
VMB42T VOLTAGE CONTROL SPECIFICATION
Control Voltage Centre: Standard = +1.5±1.0Volts (for all voltages)
Frequency Deviation: ±5.0ppm min. (Vcon = +1.5V±1.0V)
Slope Polarity:
Positive (increase of control voltage increases
output frequency.)
Input Impedance:
50k minimum
Modulation Bandwidth: 20kHz minimum
Linearity:
±10% maximum
FREQUENCY STABILITY OVER TEMPERATURE
PART NUMBER FORMAT
Frequency Stability (ppm)
Temperature
Range (°C)
P
±0.5
±1.0
±1.5
±2.0
±2.5
±3.0
0 ~ +50
P
P
P
P
P
P
-10 ~ +60
ASK
P
P
P
P
P
-20 ~ +70
x
P
P
P
P
P
-30 ~ +75
x
P
P
P
P
PP
-40 ~ +85
x
P
P
P
P
P
= available, x = not available, ASK = Please contact us
SSB PHASE NOISE at 25°C
Offset
MB42T at
133.333MHz
(dBc/Hz)
10Hz
100Hz
1kHz
10kHz
100k
Hz
-76
-102
-114
-110
-100
Example:
MB42T 28 - 38.880 - 2.5 / -30+85
Series Description
TCXO: MB42T
VCTCXO: VMB42T
Supply Voltage
28: 2.8VDC
30: 3.0VDC
33: 3.3VDC
Frequency MHz
Stability ±ppm
Operating Temperature Range
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
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