Features
• Fourth generation FemtoClock® NG technology
• Universal Frequency Translator/Frequency Synthesizer
• Two outputs
• One programmable as LVPECL or LVDS
• One LVCMOS
• Both outputs may be set to use 2.5V or 3.3V output levels
• Programmable output frequency: 1.0MHz to 250MHz
• Two differential inputs support the following input types: LVPECL,
LVDS, LVHSTL, HCSL
• Input frequency range: 8kHz - 710MHz
• Crystal input frequency range: 16MHz - 40MHz
• Two factory-set register configurations for power-up default state
• Power-up default configuration pin or register selectable
• Configurations customized via One-Time Programmable ROM
• Settings may be overwritten after power-up via I2C
• I2C Serial interface for register programming
• RMS phase jitter at 125MHz, using a 40MHz crystal
(12kHz - 20MHz): 558fs (typical), Low Bandwidth Mode (FracN)
• RMS phase jitter at 125MHz, using a 100MHz input clock
(12kHz - 20MHz): 388fs (typical), High Bandwidth Mode
(Integer FB)
• Output supply voltage modes:
VCC/VCCA/VCCO
3.3V/3.3V/3.3V
3.3V/3.3V/2.5V (LVPECL only)
2.5V/2.5V/2.5V
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) package