辐射不合规(产品辐射无法满足相关标准)常常发生在产品开发的最后阶段,造成不可预见的故障排除和昂贵的生产延迟。通过扩频时钟信号和调整信号的上升、下降沿,SiT9005扩频晶振可以帮助客户解决辐射问题,同时SiTime的Time Machine II编程器支持这些器件,允许设计人员(通过现场编程的方式实时)降低辐射度。
SiT9005扩频晶振在不需要进行高成本的排查、重新设计或重新封装的状况下可确保辐射合规,加快产品营收。频率范围 | 1MHz - 141MHz任意频率,可精确到小数点后6位 |
频率稳定性(ppm) | ±20,±25,±50 |
输出类型 | LVCMOS |
工作温度范围(℃) | -20 ~ +70,-40 ~ +85 |
扩频方式 |
Triangular, Hershey Kiss |
扩频百分比(%) |
Center: ±0.125 to ±2.000, Down: -0.25 to -4.00 |
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) | 2.0x1.6,2.5x2.0,3.2x2.5 |
特点 | 可编程制程,任意参数自由组合 |
状态 |
量产 |
SiT9005扩频晶振载频EMI降低17 dB,谐波EMI降低30 dB
● 医疗电子设备 | ● 高速串行链路 | ● 音频和视频 | ● 工业电动机 |
● 工厂自动化 | ● 安全与监控 | ● 个人计算机 | ● PCIe |
● 平板驱动器 | ● 打印机 | ● 家用电器 |
功能引脚示意图 | 脚位 | 功能 | 说明 | |
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1 | OE/ ST/NC/SD | Output Enable |
H[3]: specified frequency output L: output is high impedance. Only output driver is disabled. |
Standby |
H[3]: specified frequency output
L: output is low (week pull down). Device goes to sleep mode.Supply current reduced to I_std.
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No Connect | Pin1 has no function (Any voltage between 0 and Vdd or Open) | |||
Spread Disable |
H: Spread = ON
L: Spread = OFF
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2 | GND | Power | Electrical ground | |
3 | OUT | Output | Oscillator output | |
4 | VDD | Power | Power supply voltage[4] |
Notes:
3. In OE or ST mode, a pull-up resistor of 10 kΩ or less is recommended if pin 1 is not externally driven. If pin 1 needs to be left floating, use the NC option.
4. A capacitor of value 0.1 μF or higher between Vdd and GND is required.
请升级