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CFPT-9033EC1A

Description
High Performance TCXO/TCVCXO
File Size59KB,3 Pages
ManufacturerETC
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CFPT-9033EC1A Overview

High Performance TCXO/TCVCXO

CFPT-9025 Series High Performance TCXO/TCVCXO
ISSUE 3; 1 FEBRUARY 2006
Package Outline
Recommended for New Designs
Delivery Options
Low Profile, 7.6 x 9.3 x 3.2 mm SMD package with High
Temperature Co-fired Ceramic base and metal cover
Please contact our sales office for current leadtimes
Ageing
Description
±1ppm maximum in first year
±5ppm maximum for 10 years
The CFPT-9025 series of temperature compensated
crystal oscillators provide for ultra high stabilities down
to ±0.3ppm and operating temperature ranges as wide as
–55 to +125°C. The oscillator uses C-MAC’s latest custom
ASIC "Pluto", a single chip oscillator and analogue
compensation circuit. Due to its unique mechanical
construction the CFPT-9025 series is able to withstand
20,000 G’s acceleration, which makes it the TCXO of
choice for gun hardened GPS navigation systems
Frequency Stability
Temperature: see table
Typical Supply Voltage Variation ±10% < ±0.2 ppm
Typical Load Coefficient ±10%
< ±0.1 ppm
Frequency Adjustment
Standard Frequencies
Three options with external Control Voltage applied to
pad 1:
A - Ageing adjustment: > ±5ppm (Standard Option)
B - No frequency adjustment initial calibration @ 25°C
< ±0.5 ppm
SURFACE MOUNT
TCXOs
9.6, 10.0, 11.68, 12.504, 12.8, 13.0, 14.4, 16.3676, 19.44,
20.0, 21.73875, 24.5535, 38.88, 40.96, 47.032, 49.152,
51.84 MHz
Non-standard Frequencies in the range 1.0 MHz to 75.0 MHz
(see table) are available on request, contact sales office.
Output Waveform
C - High Pulling ±10ppm to ±50ppm and non-standard
control voltage ranges may be available depending
on frequency and stability options. Please consult
our sales office
Square HCMOS 15pF load
Square ACMOS 50pF max. load
Sinewave >1.0pk-pk, 10kΩ // 10pF load
Clipped sinewave >0.81Vpk-pk, 10kΩ // 10pF load
Linearity
Slope
Input resistance
Modulation bandwidth
Standard control voltage ranges:
Without reference voltage
Without reference voltage
< 1%
Positive
> 100kΩ
> 2kHz
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 Voltage
- Vs=5.0V Vc=2.5V±2V
- Vs=3.3V Vc=1.65V±1V
- Vc=0V to Vref
With reference voltage
Reference Voltage, Vref
3.3 and 5.0V, see table, non-standard supply voltages in
the range 2.4 to 6.0V are available on request, contact
sales office
Current Consumption
Optional reference voltage output on pad 2, suitable for
potentiometer supply or DAC reference.
1. No output (Standard option)
2. 2.2V, for Min. Vs>2.4V
3. 2.75V, for Min. Vs>3.0V
4. 4.2V, for Min. Vs>4.5V
Maximum load current 100µA
HCMOS Typically
1+Frequency(MHz)*Supply(V)*{Load(pF)+15}*10
-3
mA
E. g. 20MHz, 5V, 15pF
4mA
ACMOS Typically
1+Frequency(MHz)*Supply(V)*{Load(pF)+23}*10
-3
mA
Sinewave < 8 mA
Clipped Sinewave Typically
1+Frequency(MHz)*1.2*{Load(pF)+30}*10
-3
mA
For manual frequency adjustment connect an external
50kΩ potentiometer between pad 2 (Reference Voltage)
and pad 3 (Ground) with wiper connected to pad 1
(Voltage Control). Please specify reference voltage as a
part of the ordering code
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