Phase Noise (typical figures)
Frequency offset from carrier
Frequency
10Hz
-95dBc/Hz
100Hz
1kHz
10kHz
100kHz
12.8MHz
-115dBc/Hz
-135dBc/Hz
-140dBc/Hz
-145dBc/Hz
Electrical Specification - limiting values when measured in test circuit
Rise Time (t )
Fall Time (t )
f
Frequency Range Supply Voltage Output Waveform Output Levels
Duty Cycle
Model Number
CFPO-20
r
Square
VoH >90ꢀ Vs
VoL < 10ꢀ Vs
1.25 to 33.0MHz
1.25 to 33.0MHz
10.0 to 33.0MHz
10.0 to 33MHz
3.3V 5ꢀ
5.0V 10ꢀ
3.3V 5ꢀ
5.0V 10ꢀ
7ns
8ns
-
7ns
8ns
-
45/55ꢀ
HCMOS 15pF
Square
HCMOS 15pF
VoH >90ꢀ Vs
VoL < 10ꢀ Vs
45/55ꢀ
CFPO-21
Clipped Sinewave
10kΩ//10pF
Vpk-pk >0.8V
Vpk-pk >0.8V
-
-
CFPO-22
Clipped Sinewave
10kΩ//10pF
-
-
CFPO-23
Frequency Stability Available Over Operating Temperature Ranges
Frequency Stability Vs Operating Temperature Range
Operating Temperature
Ranges
0ꢀ0ꢁ2ppm
0ꢀ02ppm
0ꢀ1ppm
0ꢀꢁppm
-20 to 70°C
-40 to 85°C
Code PS*
-
Code RS
Code RX
Code SS
Code SX
Code MS
Code MX
Ordering Example
14ꢀ4MHz
CFPO-ꢁ0 SX
A
LF
Frequency
Model No.
Frequency Stability Vs Operating Temperature Code
Frequency Adjustment
RoHS Compliance
Note: * Codes may not be available for all frequencies
Minimum Order Information Required
■
Frequency + Model Number + Frequency Stability vs OperatingTemperature Range Code + Frequency Adjustment Code
+ RoHS Compliance Code
OR
■
Discrete Part Number (suffix ‘LF’ signifies RoHS compliance)
Custom Specification
Non-standard requirements like high drive ACMOS output, low harmonic sinewave output, different supply and control volt-
ages, high frequency pulling, different stabilities and temperature ranges may be available upon request. Please contact our
sales office to discuss your requirements
Europe Tel: +44 (0)1460 270200
AmericasTel: +1 919 941 9333
Fax: +44 (0)1460 72578
Fax: +1 919 941 9371
Fax: +86 755 8826 5990
Website: www.cmac.com
Asia
Tel: +86 755 8826 5991