Texas Instruments CDCM6208 2:8 时钟发生器和抖动清除器
Texas Instruments CDCM6208 2:8 时钟发生器和抖动清除器是一款多用途、低抖动低功率频率合成器。 它可以生成 8 个低抖动时钟输出,这 8 个输出可在与 LVPECL 相似的高摆幅 CML、正常摆幅 CML、与 LVDS 相似的低功耗 CML、HCSL、或者 LVCMOS 中进行选择。 它包含具有低频晶体或 CML、LVPECL、LVDS 或 LVCMOS 信号的两个输入中的一个。 它们适用于各种无线基础设施基带、线路数据通信、计算、低功耗医学成像和便携式测试和测量应用。 CDCM6208 还特有一个创新的小数分频器架构,此架构使得其输出的四个能够生成频率精度好于 1ppm 的任一频率。 通过 I2C 或者串行外设接口 (SPI) 编程接口,可以很简便地对 CDCM6208 进行配置,无需串行接口,使用所提供的引脚模式中的控制引脚即可将器件设置成 32 个不同的预编程配置中的一个。特性
- Superior performance with low power
- Low noise synthesizer (265fs-rms typical Jitter) or low noise Jitter cleaner (1.6ps-rms typical Jitter)
- 0.5W typical power consumption
- High channel-to-channel isolation and excellent PSRR
- Customizable device performance through flexible 1.8V, 2.5V, and 3.3V power supplies allowing mixed output voltages
- Flexible frequency planning
- 4x integer down-divided differential clock outputs supporting LVPECL-like, CML, or LVDS-like signaling
- 4x fractional or integer divided differential clock outputs supporting HCSL, LVDS-like signaling, or 8x CMOS outputs
- Fractional output divider achieves 0ppm to <1ppm frequency error and eliminates the need for crystal oscillators and other clock generators
- Output frequencies up to 800MHz
- Two differential inputs, XTAL support, and the ability for smart switching
- SPI, I2C, and pin programmable
- Professional user GUI for quick design turn-around
- 7mm x 7mm, 48-QFN package (RGZ)
- -40°C to +85°C temperature range
- 800MHz maximum output frequency
- 100MHz or 250MHz maximum input frequency
- 70% maximum duty cycle
应用
- Base-band clocking (wireless infrastructure)
- Networking and data communications
- Keystone C66x multicore DSP clocking
- Storage-server
- Portable test equipment
- Medical imaging
- High-end A/V
视频
Functional Block Diagram
发布日期: 2016-01-11
| 更新日期: 2022-03-11
