CDCE937中文资料具有 2.5V 或 3.3V 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