CDC7005中文资料高性能、低相位噪声、低偏移的时钟同步器（使参考时钟与 VCXO 同步）数据手册TI规格书

描述 Description

The CDC7005 is a high-performance, low-phase noise, and low-skew clock synchronizer and jitter cleaner that synchronizes the voltage controlled crystal oscillator (VCXO) frequency to the reference clock. The programmable predividers M and N give a high flexibility to the frequency ratio of the reference clock to VCXO: VCXO_IN/REF_IN = (NxP)/M. The VCXO_IN clock operates up to 800 MHz. Through the selection of external VCXO and loop filter components, the PLL loop bandwidth and damping factor can be adjusted to meet different system requirements. Each of the five differential LVPECL outputs is programmable by the serial peripheral interface (SPI). The SPI allows individual control of frequency and enable/disable state of each output. The device operates in 3.3-V environment. The built-in latches ensure that all outputs are synchronized.
The CDC7005 is characterized for operation from –40°C to 85°C.

特性 Features

• High Performance 1:5 PLL Clock Synchronizer
• Two Clock Inputs: VCXO_IN Clock Is Synchronized to REF_IN Clock
• Synchronizes Frequencies up to 800 MHz (VCXO_IN)
• Supports Five Differential LVPECL Outputs
• Each Output Frequency Is Selectable by x1, /2, /4, /8, /16
• All Outputs Are Synchronized
• Integrated Low-Noise OPA for External Low-Pass Filter
• Efficient Jitter Screening From Low PLL Loop Bandwidth
• Low-Phase Noise Characteristic
• Programmable Delay for Phase Adjustments
• Predivider Loop BW Adjustment
• SPI Controllable Division Setting
• Power-Up Control Forces LVPECL Outputs to 3-State at VCC

简介

CDC7005属于集成电路（IC）的时钟发生器PLL频率合成器。由TI制造生产的CDC7005时钟发生器，PLL，频率合成器时钟发生器、PLL 和频率合成器集成电路 (IC) 可为逻辑器件提供参考信号的稳定定时脉冲，这些器件包括计算机、微控制器、数据通信系统和图形/视频发生器。这些集成电路可能包括缓冲器、驱动器、分频器、倍频器、多路复用器、合成器、扇出分配器和预分频器。