CFPO-20 Datasheet, PDF (1/3 Pages) List of Unclassifed Manufacturers – high stability crystal oscillators

CFPO-20,-21,-22,-23 TC-OCXO
ISSUE 2; 20 APRIL 2006
Preliminary Specification
Recommended for new designs
Delivery Options
■ Please contact our sales office for current leadtimes
Description
■ A series of high stability crystal oscillators, using a
hybrid combination of oven control and temperature
compensation capable of sub 0.05ppm stability. By
using a loosely controlled miniature oven that is
thermally isolated from the ambient the frequency
stability of a crystal oscillator is enhanced. Stability is
further improved by compensating the residual
frequency error with C-MAC’s proprietary ASIC “Pluto”,
a single chip oscillator with analogue compensation
circuit. The combination of these two functions result in
an oscillator with the best stability / power consumption
ratio and fast warm-up, making it particularly suitable
for battery powered applications
Standard Frequencies
■ HCMOS only: 5, 6.4, 8, 8.192MHz
■ HCMOS & Clipped Sinewave 10.0, 12.8, 16.0, 16.384
and 20.0MHz
■ Other frequencies in the range 1.25 to 33MHz may be
available upon request
Waveform
■ Standard
Square HCMOS 15pF load
Clipped Sinewave 10kΩ // 10pF, AC-coupled
■ Optional
Square ACMOS 50pF max. load
Sinewave 10kΩ // 10pF, DC-coupled
Supply Voltage
■ Operating range 3.3V or 5.0V, see table.
Input Power
■ Warm-up
■ Steady state @ 25°C
■ Steady state @ -20°C
■ Steady state @ -40°C
-20 to 70°C
< 1.0W
< 270mW
< 400mW
-40 to 85°C
< 1.0W
< 350mW
< 525mW
< 600mW
Warm-up time to reach ±0.01ppm of final frequency
■ < 30 secs. (@25°C)
Ageing
■ ±1ppm maximum in first year, frequency < 20MHz
■ ±2ppm maximum in first year, frequency > 20MHz
■ ±3ppm maximum for 10 years, frequency < 20MHz
■ ±5ppm maximum for 10 years, frequency > 20MHz
■ ±1ppm maximum after reflow
Frequency Stability
■ Temperature: see table
■ Supply Voltage Variation, ±5% ±0.1ppm typ.
■ Load Coefficient, 15pF ±5pf (HCMOS) or 10kΩ // 10pF
±10% (clipped sinewave) ±0.1ppm typ.
Frequency Adjustment, three options
A Ageing adjustment by means of external Voltage Control
applied to pad 1 (standard option)
■ Range (frequency < 20MHz) > ±5ppm
■ Range (frequency > 20MHz) > ±7ppm
■ Linearity
< 0.5%
■ Slope
Positive
■ Input Resistance
> 100kΩ
■ Modulation Bandwidth
> 2kHz
■ Standard control voltage range 1.5V±1V
B Ageing adjustment by means of an external 100kΩ
potentiometer connected as a variable resistor from
pad 1 to ground.
■ Range (frequency < 20MHz) > ±5ppm
■ Range (frequency > 20MHz) > ±7ppm
C No frequency adjustment
■ Initial calibration
< ±0.5ppm
Storage Temperature Range
■ -55 to 125°C
Environmental Specification
■ Vibration: IEC 60068-2-6, test Fc: 10-60Hz 0.75mm
displacement, 60-2000Hz 100m/s2 (10gn) acceleration,
4 hours in each of three mutually perpendicular axes at
1 octave per minute.
■ Mechanical Shock: IEC 60068-2-27, test Ea; 1000m/s2
(100gn) acceleration for 6ms duration, Half sine pulse,
3 shocks in each direction along three mutually
perpendicular axes (18 shocks total)
■ Parts with the suffix “LF” on the ordering code and part
number are fully compliant with the European Union
directive 2002/95/EC on the restriction of the use of
certain hazardous substances in electrical and electronic
equipment. Note: The RoHS compliant parts are suitable
for assembly using both Lead-free solders and Lead/Tin
solders.
■ Marking: Laser Marked
Marking, includes
■ CMAC
■ Part number (Pxxxx)
■ Pad 1 / Static sensitivity
identifier (triangle)
■ Device date / location code
(YYWWL)
Package
■ Hermetically sealed, industry standard, DIL 14/4
leaded package
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Website: www.cmac.com