特性 Features

? Fourth generation FemtoClock? NG technology

? Universal Frequency Translator (UFT) / Frequency Synthesizer

? Single output (Q, nQ), programmable as LVPECL or LVDS

? Zero ppm frequency translation

? Single differential input supports 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 155.52MHz, using a 40MHz crystal LVDS

Output (12kHz - 20MHz): 439fs (typical), Low Bandwidth Mode

(FracN)

? RMS phase jitter at 400MHz, using a 40MHz crystal

(12kHz - 40MHz):285fs (typical), Synthesizer 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

? Lead-free (RoHS 6) packaging