台湾晶技TXC是一家专业频率控制产品制造商致力于研究、设计、制造、和销售Dual-Inline-Package(DIP)和表面安装设备(SMD)石英晶体振荡器产品.TXC目前专门从事这些类别的产品:晶体(32.768 khz,基本MHz,高精度兆赫,汽车级);振荡器(32.768 khz,CMOS、硅MEMS、微分输出,汽车级);VCXO(CMOS差分输出);TCXO(基本、GPS、精密);OCXO(CMOS).康华尔电子着重向大家介绍TXC晶振的LVPECL/LVDS/HCSL逻辑晶体振荡器的输出.

1、晶体振荡器(XO)简化框图

•XO是由石英晶体谐振器的振荡电路IC集成在一个密封无铅陶瓷封装.

•可以传统的石英晶体谐振器谐振器或看到声表面波谐振器.

•预匹配和预先优化谐振器和振荡电路提供准确、稳定、清洁频率输出信号.

2、What are LVPECL, LVDS and Logic Output

• LVPECL stands for “Low-Voltage Positive Emitter-Coupled Logic”.

• LVDS stands for “Low-Voltage Differential Signaling”

• HCSL stands for “High Speed Current Steering Logic”

• Specific termination circuits are required for LVPECL, LVDS and HCSL.

3、Phase Noise Performance by Various Solutions

4、Product Features

Oscillation Solution	Freq. Range	Features	Output Type	Voltage (V)	PKG (mm)
Crystal Fundamental	25MHz~200MHz	Stability ±25ppm/±50ppm OTR -40℃~85℃ 156.25M, Phase Jitter Typ. 0.10pS	LVPECL LVDS	2.5 3.3	7.05.0 5.03.2 3.2*2.5
Crystal 3rdOvertone	25MHz~200MHz	Stability ±25ppm/±50ppm OTR -40℃~85℃ 156.25M, Phase Jitter Typ. 0.12pS
Crystal PLL	75MHz~700MHz	Stability ±25ppm/±50ppm OTR -40℃~85℃ 156.25M, Phase Jitter Typ. 0.25pS
SAW Fundamental	75MHz~700MHz	Stability ±50ppm/±100ppm OTR -5℃~85℃/-10℃~70℃ 156.25M, Phase Jitter Typ. 0.30pS