Low Jitter, 10-output MEMS Clock Generator

瀑布™ SiT95141是一款单芯片MEMS时钟发生器,针对最高级别的时钟树集成进行了优化。这种片上时钟系统(ClkSoC)将多个时钟IC和振荡器整合到一个设备中。它的低噪声四PLL架构和可编程输出驱动器提供多达10个差分或20个LVCMOS低抖动时钟输出。它支持4个额外的时钟输入与分形分频器,使几乎任何输入到输出频率转换配置从8千赫到2.1千兆赫。必威体育官网手机登录

This clock generator integrates SiTime’s third-generation MEMS resonator. This integrated MEMS approach eliminates the traditional clock dependency on crystal reference and quartz related issues, and improves system robustness:

  • Always accurate clock synthesis by eliminating crystal capacitive mismatch
  • Always reliable startup even at cold temperature and in other harsh environmental conditions
  • No jitter degradation because of noise coupling onto a crystal interface
  • 石英没有固有的活性下降/频率跳跃
  • 10倍的抗振动和弯曲

SiT95141由定时器支持™ 必威体育官网手机登录简化时钟树设计的软件。该设备也可以随附用户指定的出厂预编程默认启动配置。在制造过程中,可以使用两组一次性可编程(OTP)存储器对设备配置进行两次重新编程,或者通过I2C/SPI在系统中进行配置,以增加BOM灵活性。SiT95141还支持必威体育官网手机登录SiT6503EB公司评估委员会。

Single-chip clock generator consolidates MEMS resonator, multiple clock ICs and oscillators into a single  9 x 9 mm 64-pin device
Number of Inputs 4
输出数量 10
Input Frequency Range 8 kHz至2.1 GHz(差分),8 kHz至250 MHz(LVCMOS)
输出频率范围 8 kHz至2.1 GHz(差分),8 kHz至250 MHz(LVCMOS), 1 PPS (one output only)
Output Type LVPECL、CML、HCSL、LVDS、LVCMO
PLL/时钟域数 4 PLL, 1 time domain
Operating Temperature Range (°C) -40 to +85
Phase Jitter (rms) 120 fs
Voltage Supply (V) 1.8, 2.5, 3.3
操作模式 自由运行,同步
包装类型(mm²) 9x9 mm, 64-pin
Features 冗余时钟输入,手动切换,通过I2C或SPI的DCO模式,5 ppt分辨率,可编程输出延迟控制
可利用性 取样

集成MEMS的芯片上时钟系统,简化了设计

  • 无晶体容量匹配问题,频率合成始终精确
  • 无噪声耦合到晶体电路,保证抖动
  • Resistant to vibration and board bending, anywhere PCB placement

灵活的功能可实现最高级别的时钟整合

  • 10个输出,4个独立的PLL,高达2.1 GHz的输出频率,实现最大的频率灵活性
  • Individually configurable output types and voltage to support a wide range of processors and SOCs
  • 可选4个输入,实现灵活的输入输出频率转换
  • 通过I2C或SPI进行系统内编程,进一步减少SKU

35% space saving, ideal for high density designs

  • 9 x 9 mm封装,无需外部XTAL/振荡器

Semiconductor level quality and reliability, eliminates quartz-related issues associated with traditional clocks

  • Clock tree consolidation replacing crystal oscillators (XOs) and buffers
  • 低抖动时钟频率转换与产生
  • 10G/100G/400G以太网时钟
  • 为成帧器、映射器和处理器提供的光传输网络(OTN)时钟
  • FPGA, processor, and memory clocking
  • Storage, servers and datacenters
  • 测量与测试
  • 广播视频

SiT6503EB公司Evaluation BoardUser Manual

时钟软件计时器--简化时钟树设计(联系时间)