CFPT-9025 Datasheet, PDF (1/3 Pages) List of Unclassifed Manufacturers – High Performance TCXO/TCVCXO

CFPT-9025 Series High Performance TCXO/TCVCXO
ISSUE 3; 1 FEBRUARY 2006
Recommended for New Designs
Delivery Options
■ _{Please contact our sales office for current leadtimes}
Description
■ _{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
Standard Frequencies
■ _{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
■ _{Square HCMOS 15pF load}
■ _{Square ACMOS 50pF max. load}
■ _{Sinewave >1.0pk-pk, 10kΩ // 10pF load}
■ _{Clipped sinewave >0.81Vpk-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 Voltage
■ _{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
■ _{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
Package Outline
■ _{Low Profile, 7.6 x 9.3 x 3.2 mm SMD package with High}
Temperature Co-fired Ceramic base and metal cover
Ageing
■ _{±1ppm maximum in first year}
■ _{±5ppm maximum for 10 years}
Frequency Stability
■ _{Temperature: see table}
■ _{Typical Supply Voltage Variation ±10% < ±0.2 ppm}
■ _{Typical Load Coefficient ±10%}
< ±0.1 ppm
Frequency Adjustment
■ _{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
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
■ _Linearity
< 1%
■ _Slope
Positive
■ _{Input resistance}
> 100kΩ
■ _{Modulation bandwidth}
> 2kHz
■ _{Standard control voltage ranges:}
Without reference voltage - Vs=5.0V Vc=2.5V±2V
Without reference voltage - Vs=3.3V Vc=1.65V±1V
With reference voltage
- Vc=0V to Vref
Reference Voltage, Vref
■ _{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
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