8T49N445I中文资料FemtoClock NG QUAD Universal Frequency Translator数据手册Renesas规格书

描述 Description

The IDT8T49N445I is a quad PLL with FemtoClock® NG technology. The IDT8T49N445I integrates low phase noise Frequency Translation / Synthesizer and jitter attenuation. It includes alarm and monitoring functions suitable for networking and communications applications. The device has four fully independent PLLs, each PLL  is able to generate any output frequency in the 0.98MHz - 312.5MHz range and most output frequencies in the 312.5MHz - 1,300MHz range. A wide range of input reference clocks may be used as the source for the output frequency.

Each PLL of IDT8T49N445I has three operating modes to support a very broad spectrum of applications: Frequency Synthesizer, High-Bandwidth Frequency Translator and Low-Bandwidth Frequency Translator.

特性 Features

• Four fully independent PLLs
• Output is programmable as LVPECL or LVDS
• Programmable output frequency: 0.98MHz up to 1,300MHz
• Differential inputs support the following input types: LVPECL, LVDS, LVHSTL, HCSL
• Input frequency range: 8kHz - 710MHz
• Input clock monitor on each PLL will smoothly switch between redundant input references
• I2C Serial interface for register programming
• RMS phase jitte: 465fs (typical), Low Bandwidth Mode (FracN)
• RMS phase jitter: 333fs (typical), synthesizer Mode (integer FB)
• Full 2.5V supply mode
• -40°C to 85°C ambient operating temperature
• 10mm X 10mm CABGA lead-free (RoHS 6) package
• Additional Family members include a Dual PLL 8T49N244I, Tri-PLL 8T49N366I and Quad PLL (8T49N488I)