SiT9002差分扩频晶振是SiTime公司推出的一款1-220MHz差分输出的芯片级、可编程扩频MEMS振荡器,可有效降低EMI达16dB、无温漂、低抖动,无温漂、低抖动。兼容LVPECL, LVDS, CML和 HCSL电平输出,广泛用于消费电子、视频、图像采集、机顶盒、HDTV、DVR、扫描仪、打印机、复印机、网络摄像头等领域。
SiT9002差分扩频晶振是业界第一款可编程差分扩频时钟振荡器,输出电平支持四种模式:
LVPECL、LVDS、CML、HCSL
频率范围 | 1MHz - 220MHz任意频率,可精确到小数点后5位 |
频率稳定性(ppm) | ±25,±50 |
输出类型 | LVPECL,LVDS,CML,HCML |
工作温度范围(℃) | -20 ~ +70,-40 ~ +85 |
扩频方式 |
Triangular |
扩频百分比(%) |
Center: ±0.25 to ±0.5, Down: -0.5 to -1.0 |
上升/下降时间(ns) | 可配置,降低EMI |
工作电压(V) | 1.8,2.5,3.3 |
封装尺寸(mm2) | 5.0x3.2,7.0x5.0 |
特点 | 降低EMI,可编程制程,任意参数自由组合 |
状态 |
量产 |
与系统相关的EMI降低
● 笔记本电脑 | ● 网络应用程序 | ● 工业应用 | ● CPU计时 |
● USB 3.0 | ● SATA | ● PCIe |
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功能引脚示意图 | 脚位 | 功能 | 说明 | |
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1 | OE/ST/SD | Input |
Standby or Output Enable pin for OUT+ andOUT-. OE: When High or Open : OUT+ and OUT- = active When Low : OUT+ and OUT- = High Impedance state ST: When High or Open : OUT+ and OUT- = active When Low : OUT+ and OUT- = Output is low (weak pull down), oscillation stops SD: Spread Disable - disables spread spectrum When High or Open : Spread Spectrum modulation = active When Low : Spread Spectrum modulation = Off |
2 | NC | NA | No connect pin, leave it floating. | |
3 | GND | Power | VDD power supply ground. Connect to ground | |
4 | OUT+ | Output | 1 to 220 MHz programmable clock output. | |
5 | OUT- | Output | ||
6 | VDD | Power | Power supply |
请升级