CDCVF2505中文资料用于同步 DRAM和通用应用且具有展频功能、断电模式的 PLL 时钟驱动器数据手册TI规格书

描述 Description

The CDCVF2505 is a high-performance, low-skew, low-jitter, phase-lock loop (PLL) clock driver. This device uses a PLL to precisely align the output clocks (1Y[0-3] and CLKOUT) to the input clock signal (CLKIN) in both frequency and phase. The CDCVF2505 operates at 3.3 V and also provides integrated series-damping resistors that make it ideal for driving point-to-point loads.One bank of five outputs provides low-skew, low-jitter copies of CLKIN. Output duty cycles are adjusted to 50 percent, independent of duty cycle at CLKIN. The device automatically goes into power-down mode when no input signal is applied to CLKIN. The loop filter for the PLLs is included on-chip. This minimizes the component count, space, and cost.The CDCVF2505 is characterized for operation from –40°C to 85°C.Because it is based on the PLL circuitry, the CDCVF2505 requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization is required following power up and application of a fixed-frequency, fixed-phase signal at CLKIN, and following any changes to the PLL reference.

特性 Features

• Phase-Lock Loop Clock Driver for Synchronous DRAM and General-Purpose Applications
• Spread Spectrum Clock Compatible
• Operating Frequency: 24 MHz to 200 MHz
• Low Jitter (Cycle-to-Cycle):