CDCEL937中文资料具有 1.8V LVCMOS 输出的可编程 3-PLL VCXO 时钟合成器数据手册TI规格书

描述 Description

The CDCE937 and CDCEL937 devices are modular PLL-based low cost, high-performance, programmable clock synthesizers, multipliers and dividers. They generate up to 7 output clocks from a single input frequency. Each output can be programmed in-system for any clock frequency up to 230 MHz, using up to three independent configurable PLLs.
The CDCEx937 has separate output supply pins, VDDOUT, which is 1.8 V for CDCEL937 and to 2.5 V to 3.3 V for CDCE937.
The input accepts an external crystal or LVCMOS clock signal. If an external crystal is used, an on-chip load capacitor is adequate for most applications. The value of the load capacitor is programmable from 0 to 20 pF. Additionally, an on-chip VCXO is selectable which allows synchronization of the output frequency to an external control signal, that is, PWM signal.

特性 Features

• Member of Programmable Clock Generator Family
• CDCEx925: 2-PLL, 5 Outputs
• CDCEx949: 4-PLL, 9 Outputs
• Nonvolatile EEPROM to Store Customer Setting
• On-Chip VCXO: Pull Range ±150 ppm
• Free Selectable Output Frequency up to 230 MHz
• Low Period Jitter (Typical 60 ps)
• CDCEL937: 1.8 V
• Generates Highly Accurate Clocks for Video, Audio, USB, IEEE1394, RFID, Bluetooth™, WLAN, Ethernet™, and GPS
• Programmable SSC Modulation
• 1.8-V Device Power Supply
• Packaged in TSSOP
• APPLICATIONS
- D-TVs, STBs, IP-STBs, DVD Players, DVD Recorders, and Printers
All other trademarks are the property of their respective owners

简介

CDCEL937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CDCEL937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。