特性 Features

? Fourth Generation FemtoClock? NG technology

? Universal Frequency Translator/Frequency Synthesizer

? Zero ppm frequency translation

? Two outputs, individually programmable as LVPECL or LVDS

? Both outputs may be set to use 2.5V or 3.3V output levels

? Programmable output frequency: 0.98MHz up to 1,300MHz

? Two differential inputs support the following input types:

LVPECL, LVDS, LVHSTL, HCSL

? Input frequency range: 8kHz - 710MHz

? Phase Build-Out minimizes output phase change on switchover

? 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

(12kHz - 20MHz): 378fs (typical), Low Bandwidth Mode (FracN)

? Output supply voltage modes:

VCC/VCCA/VCCO

3.3V/3.3V/3.3V

3.3V/3.3V/2.5V

2.5V/2.5V/2.5V

? -40°C to 85°C ambient operating temperature