1至220 MHz，±10至±50 ppm数字控制XO
The SiT3907 is a highly flexible, high performance DCXO with LVCMOS/LVTTL compatible output. This programmable device supports any frequency, 1-220 MHz, along with any combination of voltage (1.8 V; 2.5 V to 3.3 V), pull range (±25 ppm to ±200 ppm) and package (3225, 5032, 7050). It enables frequency tuning via a unique one-wire interface, eliminating frequency drift that is caused by board noise and simplifying PLL and clock synchronization design. It comes in 3 industry-standard package sizes, 4-pin 3.2x2.5 mm, and 6-pin 5.0x3.2 or 7.0x5.0 mm.
| Oscillator Type | DCXO-SE |
| 频率 | 1到220 MHz |
| 频率Stability (ppm) | ±10，±25，±50 |
| 阶段抖动（RMS） | 0.6 ps |
| 输出类型 | lvcmos. |
| 工作温度范围（°C） | -20 to +70, -40 to +85 |
| 拉伸范围（PPM） | ±25，±50，±100，±200，±400，±800，±1600 |
| FlexEdge.TM值上升/下降时间 | 是的 |
| 电压电源（V） | 1.8, 2.5, 2.8, 3.3 |
| Package Type (mm²) | 3.2x2.5,5.0x3.2,7.0x5.0 |
| 特征 | Digitally controlled, Field Programmable |
| Availability | Production |
三种行业标准占用额外的替换石英VCXO，具有次要设计修改
- Digitally controlled 1 ppb frequency pull resolution
- 频率从1 MHz到220 MHz
- Supply voltage of 1.8 V; 2.5 V to 3.3 V
- 频率稳定性为±10 ppm至±50 ppm
- 拉伸范围从±25 ppm至±1600 ppm：
- Eliminating a need for external DAC
- Customized specification for optimal system performance
- 容易获得的任何设备规格智慧hin the operating range
One-wire digital frequency tuning
- 软件控制系统PLL中的更简单的环路控制
- 更一致的PLL带宽在工作范围内
- 更快的校准和锁定时间
- 减少调制谐波;
三个行业标准包
- 使用VCXO采用DCXO对现有设计进行微小的修改;
4至6周的提前时间
- Reduce inventory overhead
- Mitigate shortage risks
- Timing servers
- 网络视频系统和数字化器
- 机顶盒（STB）
- 抖动清洁剂
- Networked audio systems
- 仪器
- 低带宽模拟相位锁定环（PLL）
- FPGA data recovery