CFPT-5300 SERIES
LEADED TCXOs
ISSUE 1; 15 OCTOBER 2004
Delivery Options
■Please contact our sales office for current lead times
Description
■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
■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
Non - standard frequencies in the range 1.25MHz to
40.0MHz are available on request, please contact our
sales office
Waveform
■Square HCMOS 15pF load
The following non-standard outputs are available on
request, contact sales office:
■Square ACMOS 50pF max load
■Sinewave, > 1.0pk-pk, 10kΩ // 10pF load
■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
Supply Voltages
■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)
Current Consumption
■HCMOS Typically »
1+Frequency(MHz)*Supply(V)*{Load(pF)+15}*10-3mA
Eg 20MHz, 5V, 15pF » 4mA
■Sinewave, < 8mA
■Clipped sinewave,
1+Frequency(MHz)*1.2*{Load(pF)+30}*10-3mA
Package Outline
■Low Profile DIL 14 resistance welded enclosure,
hermetically sealed
Ageing
■±1ppm maximum in first year, frequency < 20MHz
■±3ppm maximum for 10 years, frequency < 20MHz
■±2ppm maximum in first year, frequency > 20MHz
■±5ppm maximum for 10 years, frequency > 20MHz
Frequency Stability
■Temperature: see table
■Supply Voltage Variation ±10% < ±0.2ppm*
■Load co-efficient 15pF ±5pF < ±0.2ppm*
* Dependent on frequency and output type
Frequency Adjustment
■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
■Option C:
No frequency adjustment, initial calibration @25°C
<±1.0ppm
Storage Temperature Range
■-55 to 95°C
Europe Tel: +44 (0)1460 270200 Fax: +44 (0)1460 72578 Website: www.cmac.com
Americas Tel: +1 919 941 9333 Fax: +1 919 941 9371
Asia Tel: +86 755 8826 5991 Fax: +86 755 8826 5990
LEADED TCXOs
Environmental Specification
■Bump: IEC 60068-2-29, Test Eb, 4000 ±10 bumps at
390m/s
2
in each of the three mutually perpendicular
axes
■Shock: IEC 60068-2-27 Test Ea, 980m/s
2
acceleration for
6ms duration, 3 shocks in each direction along
three mutually perpendicular axes
■Solderability: IEC 60068-2-20,Test T, method 1
(solder bath): Temperature 235°C
■Vibration: IEC 60068-2-6 Test Fc Procedure B4,
10-60Hz 1.5mm displacement, 60-2000Hz at 98.1
m/s
2
, 30 minutes in each of three mutually
perpendicular axes at 1 octave per minute
■Damp Heat (steady state): IEC 60068-2-3, Test Ca,
Duration 56 days
■Robustness of Termination: IEC 60068-2-21, Test
Ua (tensile): Force 1Kg
■Sealing: IEC 60068-2-17, Test Qc (gross) & test Qk (fine)
■Marking: Heat cured epoxy ink, engraving or label
■Immersion in Solvents: IEC 60068-2-45, Test Xa
Marking Includes
■C-MAC
■Part Number (E and four digits)
■Frequency (MHz)
■Pin 1 / Static sensitivity identified (Triangle)
■Date Code and manufacturing location code (YYWWL)
Minimum Order Information Required
■Frequency + Model Number + Frequency Stability Vs
Operating Temperature Code + Frequency Adjustment
Code
OR
■Discrete part number for repeat orders
Please supply full information for non-standard options, if
required
Outline in mm
5.08 max
6.35±0.50
0.75 max
∅0.41
7.62
13.08 max
15.24
20.7 max
17
14 8
Output Waveform - HCMOS
t
90% (VoH-VoL)
10% (VoH-VoL)
50% (VoH-VoL)
0V
trtf
T
+Vs
Duty cycle = t x 100(%)
T
VoH
VoL
Test Circuit - HCMOS
A
V
Oscillator
7
14 8
Oscilloscope
Frequency counter
0.1µF15pF*
1
Voltage
Control
or
+Vs
Pin Connections
1. Frequency Adjust
(do not connect if
Frequency Adjust
option C has
been selected)
7. GND
8. Output
14. +Vs
Europe Tel: +44 (0)1460 270200 Fax: +44 (0)1460 72578 Website: www.cmac.com
Americas Tel: +1 919 941 9333 Fax: +1 919 941 9371
Asia Tel: +86 755 8826 5991 Fax: +86 755 8826 5990
LEADED TCXOs
Frequency Frequency offset from Frequency offset from Frequency offset from Frequency offset from Frequency offset from
carrier: 10Hz carrier: 100Hz carrier: 1kHz carrier: 10kHz 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
Phase Noise (typical figures)
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
1.25 to 40.0MHz 5.0V±10% Square HCMOS Voh
>
90% Vs 7ns 7ns 45/55% CFPT-5302
15pF Vol
<
10% Vs
Electrical Specification - limiting values when measured in test circuit
Ordering Example 10.0MHz CFPT-5301 FX A
Frequency
Model number
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
Frequency Stability Available Over Operating Temperature Ranges
Operating Frequency Stabilities Vs Operating Temperature Range
Temperature ±0.3ppm ±0.5ppm ±0.8ppm ±1.0ppm ±1.5ppm
Ranges
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
–55 to 95°C Code FA* Code CA*
Europe Tel: +44 (0)1460 270200 Fax: +44 (0)1460 72578 Website: www.cmac.com
Americas Tel: +1 919 941 9333 Fax: +1 919 941 9371
Asia Tel: +86 755 8826 5991 Fax: +86 755 8826 5990
