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1MHz ～340 MHz，I2C/SPI可编程振荡器
SiT3521是一款超低抖动、用户可编程的振荡器。基于SiTime的Elite Platform™平台，采用独特的DualMEMS™温度传感技术和TurboCompensation™技术，以实现卓越的动态性能，使其具有：
- ● 抵抗气流和热冲击的能力
- ● 抵抗冲击和振动的能力
- ● 优异的电源噪声抑制能力
SiT3521支持两种系统内编程选项：
- ● 任意频率模式，可重新编程时钟输出，以产生1 MHz至340 MHz之间的任意频率
- ● 数字控制振荡器（DCO）模式，可通过I2C或SPI接口将时钟调整或拉动至±3200 ppm
| 频率范围 | 1Hz - 340MHz |
| 频率稳定性(ppm) | ±20，±25，±50 |
| 输出类型 |
LVPECL，LVDS，HCSL |
| 工作温度范围(℃) | -20 ~ +70，-40 ~ +85，-40 ~ +105 |
| 工作电压(V) | 2.5 ~ 3.3 |
| 相位抖动(rms) | ≤0.23 ps |
| 工作电压(V) | 2.5 ~ 3.3 |
| 封装尺寸(mm2) | 5.0x3.2 |
| 特点 | 系统内部可通过I2C/SPI进行编程 |
| 状态 |
量产 |
SiT3521 系统内可编程，通过I2C/SPI接口在1MHz至340MHz范围内调整
数字频率调整（DCO）通过I2C/SPI接口实现
- ● 输出频率调整，具有完美的线性度
- ● 提供13种可编程的频率调整范围选项，最高可达±3200 ppm
- ● 频率调整分辨率低至5 ppt（0.005 ppb）
SiT3521 动态性能
- ● 0.1 ppb/g，卓越的抗冲击和振动性能
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● 无活动下降或微跳
SiT3521 内置LDO，用于片上电源噪声滤波
- ● 0.05 ps/mV的电源噪声抑制（PSNR）
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● 通过省去一个LDO来减少BOM
SiT3521 可编程LVPECL、LVDS或HCSL信号模式输出
- ● 可编程LVPECL、LVDS摆幅
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● LVDS共模电压控制
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● 优化信号完整性
SiT3521 卓越的可靠性
- ● 10亿小时平均无故障时间（MTBF）
- ● 终身保修：降低因时钟组件导致的维修成本和现场故障
| ● 10G到100G以太网 | ● SONET（同步光纤网络） | ● 数据中心 | ● 测试与测量 |
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| 产品型号 | 规格描述 | 库存数量 | |
| SIT3521AC-2C133-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 3.3V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C133-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 3.3V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C233-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 3.3V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C233-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 3.3V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C125-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C125-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C225-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C325-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C325-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C325-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C133-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 3.3V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C133-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 3.3V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C133-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 3.3V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C233-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 3.3V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C233-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 3.3V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C333-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 3.3V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C333-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 3.3V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C125-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C125-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C125-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C225-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C225-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C225-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C325-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AC-2C325-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 2.5V -20℃ ~ +70℃ | 9000 | 商城购买 |
| SIT3521AI-2C133-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 3.3V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C133-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 3.3V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C233-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 3.3V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C233-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 3.3V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C233-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 3.3V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C333-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 3.3V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C333-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 3.3V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C125-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C225-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C225-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C225-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C325-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C325-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C133-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 3.3V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C133-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 3.3V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C233-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 3.3V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C233-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 3.3V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C333-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 3.3V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C125-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C125-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±20ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C225-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C225-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±25ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C325-GY148.425824 | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C325-GY148.425824T | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
| SIT3521AI-2C325-GY148.425824Y | I2C/SPI/数控晶振 SIT3521系列 148.425824MHz 5032 ±50ppm 2.5V -40℃ ~ +85℃ | 9000 | 商城购买 |
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