CDCVF2505PWR Clock Timer ICS Clock Clock Drivers & Distribution 3.3V PLL Clock

1 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): < |150 ps| (Over 66 MHz to 200 MHz Range)

• Distributes One Clock Input to One Bank of Five Outputs (CLKOUT Used to Tune the Input-Output Delay)

• Three-States Outputs When There Is No Input Clock

• Operates From Single 3.3-V Supply

• Available in 8-Pin TSSOP and 8-Pin SOIC Packages

• Consumes Less Than 100 mA (Typical) in Power- Down Mode

• Internal Feedback Loop Is Used to Synchronize the Outputs to the Input Clock

• 25-Ω On-Chip Series Damping Resistors

• Integrated RC PLL Loop Filter Eliminates the Need for External Components

   

2 Applications

• Synchronous DRAMs

• Industrial Applications

• General-Purpose Zero-Delay Clock Buffers

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.

Device Information