CFPT-5300 SERIES
ISSUE 1; 15 OCTOBER 2004
Package Outline
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Delivery Options
Please contact our sales office for current lead times
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Ageing
Description
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The CFPT-5300 series of temperature compensated
crystal oscillators (TCXOs), provide for ultra high stabilities
down to ±0.3ppm and operating temperature ranges as wide
as -55 to 95°C. Housed in an industry standard 4 pin
DIL 14 package, the oscillator uses C-MAC’s latest
custom ASIC “Pluto”, a single chip oscillator and
analogue compensation circuit. Its wide frequency
range, operating temperature range, coupled with it’s
high stability and linear frequency pulling make it the
ideal reference oscilator. Its ability to function down to
supply voltage of 2.4V and low power consumption
makes it suitable for a wide range of applications
Standard Frequency
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Temperature: see table
Supply Voltage Variation ±10% < ±0.2ppm*
■ Load co-efficient 15pF ±5pF < ±0.2ppm*
* Dependent on frequency and output type
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Square HCMOS 15pF load
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LEADED TCXOs
The following non-standard outputs are available on
request, contact sales office:
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Sinewave, > 1.0pk-pk, 10kΩ // 10pF load
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Clipped Sinewave, >0.8Vpk-pk, 10kΩ // 10pF load
Sinewave and clipped sinewave signals are superimposed
on a DC offset, to remove this offset insert an external
coupling capacitor in series with the output
3.3V or 5.0V
(non standard supply voltages in the range 2.4V to 6.0V are
available on request, please contact our sales office)
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HCMOS Typically »
1+Frequency(MHz)*Supply(V)*{Load(pF)+15}*10-3mA
Eg 20MHz, 5V, 15pF » 4mA
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Sinewave, < 8mA
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Clipped sinewave,
1+Frequency(MHz)*1.2*{Load(pF)+30}*10-3mA
76
Option C:
No frequency adjustment, initial calibration @25°C
<±1.0ppm
Storage Temperature Range
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Current Consumption
Option A (standard):
Control Voltage 1.5V±1.0V, applied to pin 1
> ±5ppm*, frequency < 20MHz
> ±7ppm, frequency > 20MHz
Linearity
<3%
Slope
Positive
Input resistance
>100kΩ
Modulation Bandwidth
>2kHz
Option B:
> ±5ppm *(>±7ppm if frequency >20MHz) by means
of an external 100kΩ potentiometer connected as a
variable resistor from pin 1 to GND
* Higher adjustment range up to ±50ppm and
non standard control voltage ranges are available on
request. This may not be compatible with all stability
options, contact sales office
Supply Voltages
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in first year, frequency < 20MHz
for 10 years, frequency < 20MHz
in first year, frequency > 20MHz
for 10 years, frequency > 20MHz
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Waveform
Square ACMOS 50pF max load
maximum
maximum
maximum
maximum
Frequency Adjustment
3.2, 4.096, 5.0, 6.4, 8.192, 9.6, 10.0, 12.8, 13.0, 14.4,
14.85, 16.384, 16.8, 19.2, 19.44, 19.8, 20, 32.768, 38.88,
40.0 MHz
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±1ppm
±3ppm
±2ppm
±5ppm
Frequency Stability
Non - standard frequencies in the range 1.25MHz to
40.0MHz are available on request, please contact our
sales office
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Low Profile DIL 14 resistance welded enclosure,
hermetically sealed
-55 to 95°C
5.08 max
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Vibration: IEC 60068-2-6 Test Fc Procedure B4,
10-60Hz 1.5mm displacement, 60-2000Hz at 98.1
m/s2, 30 minutes in each of three mutually
perpendicular axes at 1 octave per minute
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Damp Heat (steady state): IEC 60068-2-3, Test Ca,
Duration 56 days
1
7
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Robustness of Termination: IEC 60068-2-21, Test
Ua (tensile): Force 1Kg
14
8
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Marking: Heat cured epoxy ink, engraving or label
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Immersion in Solvents: IEC 60068-2-45, Test Xa
Marking Includes
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C-MAC
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Part Number (E and four digits)
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Frequency (MHz)
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Pin 1 / Static sensitivity identified (Triangle)
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Date Code and manufacturing location code (YYWWL)
Minimum Order Information Required
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7.62
Solderability: IEC 60068-2-20,Test T, method 1
(solder bath): Temperature 235°C
Sealing: IEC 60068-2-17, Test Qc (gross) & test Qk (fine)
1. Frequency Adjust
(do not connect if
Frequency Adjust
option C has
been selected)
7. GND
8. Output
14. +Vs
∅0.41
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Pin Connections
15.24
20.7 max
Output Waveform - HCMOS
tf
+Vs
VoH
50% (VoH-VoL)
10% (VoH-VoL)
VoL
0V
Frequency + Model Number + Frequency Stability Vs
Operating Temperature Code + Frequency Adjustment
Code
t
T
Duty cycle = t x 100(%)
T
OR
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tr
90% (VoH-VoL)
Discrete part number for repeat orders
Please supply full information for non-standard options, if
required
Test Circuit - HCMOS
Voltage
Control
or
A
+Vs
Oscillator
1
14
V
0.1µF
7
8
15pF*
Oscilloscope
Frequency counter
77
LEADED TCXOs
Shock: IEC 60068-2-27 Test Ea, 980m/s2 acceleration for
6ms duration, 3 shocks in each direction along
three
mutually perpendicular axes
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Outline in mm
6.35±0.50
Bump: IEC 60068-2-29, Test Eb, 4000 ±10 bumps at
390m/s2 in each of the three mutually perpendicular
axes
13.08 max
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0.75 max
Environmental Specification
Phase Noise (typical figures)
Frequency
Frequency offset from
carrier: 10Hz
Frequency offset from
carrier: 100Hz
Frequency offset from
carrier: 1kHz
Frequency offset from
carrier: 10kHz
Frequency offset from
carrier: 100kHz
10.0MHz
–95 dBc/Hz
–120 dBc/Hz
–135 dBc/Hz
–140 dBc/Hz
–145 dBc/Hz
20.0MHz
–85 dBc/Hz
–110 dBc/Hz
–125 dBc/Hz
–135 dBc/Hz
–140 dBc/Hz
40.0MHz
–75 dBc/Hz
–100 dBc/Hz
–120 dBc/Hz
–130 dBc/Hz
–135 dBc/Hz
Electrical Specification - limiting values when measured in test circuit
Frequency Range
Supply Voltage
Output Waveform
Output levels
Rise Time(tr)
Fall Time (tf)
Duty Cycle
Model Number
1.25 to 40.0MHz
3.3V±10%
Square HCMOS
Voh > 90% Vs
8ns
8ns
45/55%
CFPT-5301
15pF
Vol < 10% Vs
Square HCMOS
Voh > 90% Vs
7ns
7ns
45/55%
CFPT-5302
15pF
Vol < 10% Vs
1.25 to 40.0MHz
5.0V±10%
Frequency Stability Available Over Operating Temperature Ranges
Operating
Temperature
Ranges
±0.3ppm
±0.5ppm
Frequency Stabilities Vs Operating Temperature Range
±0.8ppm
±1.0ppm
±1.5ppm
0 to 70°C
Code AC*
Code EC
Code BC
Code FC
Code CC
–20 to 70°C
Code AS*
Code ES
Code BS
Code FS
Code CS
–30 to 75°C
Code EU*
Code BU
Code FU
Code CU
–40 to 85°C
Code EX*
Code BX
Code FX
Code CX
Code FA*
Code CA*
–55 to 95°C
Ordering Example
10.0MHz
Frequency
Model number
LEADED TCXOs
Frequency Stability Vs Operating Temperature Code
Frequency Adjustment Code
(For frequency adjustment codes see main text)
Note:* Codes may not be available for all frequencies
78
CFPT-5301 FX A