EPSON爱普生石英晶振,Q22FA1280048500石英晶体谐振器

EPSON爱普生石英晶体Q22FA1280048500等效电路与谐振频率和石英振荡器原理

石英晶体等效电路

当石英晶体不振动时,可等效为一个平板电容C0,称为静态电容；其值决定于晶片的几何尺寸和电极面积,一般为几到几十皮法.当晶片产生振动时,进口晶振代理商机械振动的惯性等效为电感L,其值为几毫亨到几十亨.晶片的弹性等效为电容C,其值仅为0.01到01pf,因此C《C0.晶片的摩擦损耗等效为电阻R,其值约为100欧,理想情况下R=0.当等效电路中的L,R,C支路产生串联谐振时,该支路呈纯阻性,谐振频率等效电阻为R.

EPSON爱普生石英晶振,Q22FA1280048500石英晶体谐振器

爱普生晶振编码	长x宽x高	型号	石英晶振频率	负载	频率25°C	频率公差	工作温度范围	ESR最大	驱动电平
Q22FA1280047000	2x1.6x0.5mm	FA-128	26.000000MHz	12pF	+/-10ppm	+/-20ppm	-40to+85°C	≤60Ω	≤100µW
Q22FA1280047100	2x1.6x0.5mm	FA-128	33.330000MHz	7pF	+/-30ppm	+/-30ppm	-20to+75°C	≤60Ω	≤100µW
Q22FA1280047300	2x1.6x0.5mm	FA-128	25.000000MHz	6pF	+/-30ppm	+/-20ppm	-40to+85°C	≤80Ω	≤100µW
Q22FA1280047600	2x1.6x0.5mm	FA-128	27.120000MHz	8pF	+/-15ppm	+/-20ppm	-40to+85°C	≤60Ω	≤100µW
Q22FA1280047900	2x1.6x0.5mm	FA-128	48.000000MHz	8pF	+/-50ppm	+/-30ppm	-20to+75°C	≤60Ω	≤100µW
Q22FA1280048000	2x1.6x0.5mm	FA-128	28.636300MHz	6pF	+/-10ppm	+/-10ppm	-20to+75°C	≤60Ω	≤100µW
Q22FA1280048400	2x1.6x0.5mm	FA-128	48.000000MHz	6pF	+/-10ppm	+/-20ppm	-20to+70°C	≤60Ω	≤100µW
Q22FA1280048500	2x1.6x0.5mm	FA-128	25.000000MHz	20pF	+/-30ppm	+/-30ppm	-20to+85°C	≤80Ω	≤100µW
Q22FA1280048700	2x1.6x0.5mm	FA-128	16.000000MHz	99pF	+/-30ppm	+/-30ppm	-20to+75°C	≤200Ω	≤100µW
Q22FA1280048900	2x1.6x0.5mm	FA-128	24.000000MHz	12pF	+/-10ppm	+/-10ppm	-20to+85°C	≤80Ω	≤100µW
Q22FA1280049500	2x1.6x0.5mm	FA-128	24.000000MHz	6pF	+/-10ppm	+/-50ppm	-40to+85°C	≤80Ω	≤100µW
Q22FA1280049700	2x1.6x0.5mm	FA-128	52.000000MHz	6.7pF	+/-10ppm	+/-10ppm	-20to+75°C	≤60Ω	≤100µW
Q22FA1280049900	2x1.6x0.5mm	FA-128	24.000000MHz	10pF	+/-10ppm	+/-20ppm	-40to+85°C	≤80Ω	≤100µW
Q22FA1280050200	2x1.6x0.5mm	FA-128	32.000000MHz	6pF	+/-20ppm	+/-30ppm	-40to+85°C	≤60Ω	≤100µW
Q22FA1280050600	2x1.6x0.5mm	FA-128	38.400000MHz	12pF	+/-10ppm	+/-20ppm	-40to+85°C	≤60Ω	≤100µW
Q22FA1280050700	2x1.6x0.5mm	FA-128	16.000000MHz	9pF	+/-10ppm	+/-15ppm	-30to+85°C	≤200Ω	≤100µW
Q22FA1280051300	2x1.6x0.5mm	FA-128	16.000000MHz	10pF	+/-30ppm	+/-30ppm	-40to+85°C	≤200Ω	≤100µW
Q22FA1280051400	2x1.6x0.5mm	FA-128	32.000000MHz	12pF	+/-10ppm	+/-20ppm	-40to+85°C	≤60Ω	≤100µW
Q22FA1280051700	2x1.6x0.5mm	FA-128	32.000000MHz	6pF	+/-10ppm	+/-20ppm	-40to+85°C	≤60Ω	≤100µW
Q22FA1280051900	2x1.6x0.5mm	FA-128	52.000000MHz	8pF	+/-10ppm	+/-12ppm	-30to+85°C	≤60Ω	≤100µW
Q22FA1280052600	2x1.6x0.5mm	FA-128	24.000000MHz	8.5pF	+/-9ppm	+/-9ppm	-10to+70°C	≤80Ω	≤100µW
Q22FA1280052900	2x1.6x0.5mm	FA-128	16.000000MHz	6pF	+/-10ppm	+/-10ppm	-20to+75°C	≤200Ω	≤100µW
Q22FA1280053000	2x1.6x0.5mm	FA-128	32.000000MHz	10pF	+/-10ppm	+/-10ppm	-20to+75°C	≤50Ω	≤100µW
Q22FA1280053100	2x1.6x0.5mm	FA-128	50.000000MHz	10pF	+/-15ppm	+/-15ppm	-40to+85°C	≤60Ω	≤100µW

石英振荡器原理

若在晶片的两个极板间加一电场,会使晶体产生机械变形；反之,若在极板间施加机械力,又会在相应的方向上产生电场,这种现象称为压电效应.如在极板间所加的是交变电压,就会产生机械变形振动,同时机械变形振动又会产生交变电场.一般来说,无源贴片晶振这种机械振动的振幅是比较小的,其振动频率则是很稳定的.但当外加交变电压的频率与晶片的固有频率（决定于晶片的尺寸）相等时,机械振动的幅度将急剧增加,这种现象称为压电谐振,因此石英晶体又称为石英晶体谐振器.