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PLL Clock Generators | NBC12439
概览
NBC12439 和 NBC12439A 为通用型、基于 PLL 的合成时钟源。VCO 的运行频率范围为 400 MHz 至 800 MHz。VCO 频率发送到 N 输出分频器，在此处可以配置为提供 1、2、4 或 8 分频比。 VCO 和输出频率可使用配置逻辑的并行或串行接口进行编程。完全集成了 PLL 环路滤波器，无需任何外部组件。 NBC12439 规定运行范围为商用温度范围。 NBC12439A 规定运行范围为工业温度范围。
- Clock generation and synthesis for computing and servers.
- Best-in-Class Output Jitter Performance, ±20 ps Peak-to-Peak
- 50 MHz to 800 MHz Programmable Differential PECL Outputs
- Fully Integrated Phase-Lock-Loop with Internal Loop Filter
- Parallel Interface for Programming Counter and Output Dividers During Power-Up
- Minimal Frequency Overshoot
- Serial 3-Wire Programming Interface
- Crystal Oscillator Interface
- Operating Range: VCC = 3.135 V to 5.25 V
- CMOS and TTL Compatible Control Inputs
- Drop in replacement for Motorola MC12439
- Power-Down of PECL Outputs (divide 16)
- Pb-Free Packages are Available
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