SiT5357高精度温补晶振是SiTime公司推出的一款60-220MHZ输出的超高精度、抗冲击、芯片级、可编程的温补振荡器VC-TCXO,可提供0.1 ppb/g 振动免疫力,不会产生频率扰动或微跳变。广泛应用于小型基站、IEEE1588、光传送 - SONET / SDH,OTN、同步以太网及光学设备。
频率范围
60MHz - 220MHz之间任意频率,可精确到小数点后6位
频率稳定性(ppm)
±0.1,±0.2,±0.25
相位抖动(ps)
0.31ps
输出类型
LVCMOS,,Clipped sinewave
工作温度范围(℃)
-20 ~ +70,-40 ~ +85,-40 ~ +105
牵引范围(ppm)
±6.25 ~ ±3200
上升/下降时间(ns)
可配置,降低EMI
工作电压(V)
2.5,2.8,3.0,3.3
封装尺寸(mm2)
5.0x3.2
特点
可编程制程,任意参数自由组合
状态
量产
SiT5357高精度压控温补晶振振动时相位噪声提高20倍
SiT5357高精度压控温补晶振无活动下降或微跳
SiT5357高精度压控温补晶振具有0.2 ps/mV电源噪声抑制(PSNR)
SiT5357高精度压控温补晶振信号模式:LVCMOS或削波正弦波输出
SiT5357高精度压控温补晶振具有丰富的可编程功能
SiT5357高精度压控温补晶可以通过I2C进行数字频率调谐
SiT5357高精度压控温补晶具有卓越的可靠性
● SONET/SDH Stratum 3 | ● IEEE 1588边界时钟 | ● 光传输(OTN、OLT等) | ● COSPAS/SARSAT卫星 |
● 同步以太网 | ● 宽带卫星 | ● 数字化仪表 | ● 串行数据链路 |
● 无线和回程 | ● 精密GNSS | ● GPS/GNSS模块 | ● 铁路 |
● 远程通信 | ● 室内定位 |
● 智能农业 |
功能引脚示意图 |
脚位 |
功能 |
上拉/下拉电阻 |
说明 | |
|
1 |
OE/NC[10]/VC |
OE – Input |
100kΩ Pull-Up |
H[8]: specified frequency output L: output is high impedance. Only output driver is disabled. |
NC – No Connect |
|
H or L or Open: No effect on output frequency or other device functions | |||
VC – Input |
|
Control Voltage in VCTCXO Mode | |||
2 |
SCL / NC[10] |
SCL – Input |
200kΩ Pull-Up |
I2C serial clock input | |
No Connect |
|
H or L or Open: No effect on output frequency or other device functions | |||
3 |
NC[10] |
No Connect |
- | H or L or Open: No effect on output frequency or other device functions | |
4 |
GND |
Power |
- | Connect to ground | |
5 |
A0 / NC[10] |
A0 – Input |
100 kΩ Pull-Up |
Device I2C address when the address selection mode is via the A0 pin. This pin is NC when the I2C device address is specified in the ordering code.
A0 Logic Level I2C Address
0 1100010
1 1101010
|
|
NC – No Connect |
|
H or L or Open: No effect on output frequency or other device functions. | |||
6 |
CLK |
Output |
- | LVCMOS, or clipped sinewave oscillator output | |
7 |
NC[10] |
No Connect |
- | H or L or Open: No effect on output frequency or other device functions | |
8 |
NC[10] |
No Connect |
- | H or L or Open: No effect on output frequency or other device functions | |
9 |
VDD |
Power |
- | Connect to power supply[9] | |
10 |
SDA / NC[10] |
SDA – Input/Output |
200 kΩ Pull Up | I2C Serial Data. | |
NC – No Connect |
|
H or L or Open: No effect on output frequency or other device functions. |
标题 | 时间 |
---|---|
MEMS谐振器介绍 | 2021-03-15 |
如何测量晶振频率 | 2021-03-15 |
时钟抖动定义及测量方法 | 2021-03-15 |