臺灣晶技TXC是一家專業頻率控制產品制造商致力于研究、設計、制造、和銷售Dual-Inline-Package(DIP)和表面安裝設備(SMD)石英晶體振蕩器產品.TXC目前專門從事這些類別的產品:晶體(32.768 khz,基本MHz,高精度兆赫,汽車級);振蕩器(32.768 khz,CMOS、硅MEMS、微分輸出,汽車級);VCXO(CMOS差分輸出);TCXO(基本、GPS、精密);OCXO(CMOS).康華爾電子著重向大家介紹TXC晶振的LVPECL/LVDS/HCSL邏輯晶體振蕩器的輸出.

1、晶體振蕩器(XO)簡化框圖

•XO是由石英晶體諧振器的振蕩電路IC集成在一個密封無鉛陶瓷封裝.

•可以傳統的石英晶體諧振器諧振器或看到聲表面波諧振器.

•預匹配和預先優化諧振器和振蕩電路提供準確、穩定、清潔頻率輸出信號.

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