愛普生晶振微型的SMD無源晶振用于MPU時(shí)鐘Q22FA2380014616，在這個(gè)電子產(chǎn)品如日新月異的時(shí)代里，產(chǎn)品的更新為我們的生活帶來不少的便利，同時(shí)也需要考慮其成本，因此成本問題成了生產(chǎn)商考慮的重要因素，對(duì)于把控成本每個(gè)企業(yè)都有自身的衡量標(biāo)準(zhǔn)，如果超過公司成本范圍，則需要考慮是否找到可替代，低成本的貼片石英晶振,這樣能夠有效節(jié)約成本，而工程在設(shè)計(jì)電路時(shí)，又需要考慮其他方面的問題，晶振為何能夠?qū)﹄娮赢a(chǎn)品影響這么大呢？其實(shí)我們都知識(shí)晶振對(duì)于產(chǎn)品本身來說，是具有大價(jià)值，而晶振與產(chǎn)品也是相互聯(lián)系，缺一不可，同時(shí)也說明了晶振對(duì)于產(chǎn)品的重要程度。

Product Number16	LxWxH	愛普生晶振型號(hào)	Frequency	CL Value	Freq.tol. @+25°C	Freq.tol./Temp.range	Temperature range
Q22FA2380000116	3.2 x 2.5 x 0.7mm	FA-238	20.000000 MHz	12 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380000216	3.2 x 2.5 x 0.7mm	FA-238	20.000000 MHz	18 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380001116	3.2 x 2.5 x 0.7mm	FA-238	16.934400 MHz	10 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380001316	3.2 x 2.5 x 0.7mm	FA-238	25.000000 MHz	10 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380002216	3.2 x 2.5 x 0.7mm	FA-238	27.000000 MHz	12 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380002816	3.2 x 2.5 x 0.7mm	FA-238	27.000000 MHz	18 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380003516	3.2 x 2.5 x 0.7mm	FA-238	20.000000 MHz	12 pF	+/-30 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380004116	3.2 x 2.5 x 0.7mm	FA-238	24.000000 MHz	20 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380004416	3.2 x 2.5 x 0.7mm	FA-238	24.000000 MHz	7 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380004716	3.2 x 2.5 x 0.7mm	FA-238	16.000000 MHz	7 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380004816	3.2 x 2.5 x 0.7mm	FA-238	49.152000 MHz	12 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380006316	3.2 x 2.5 x 0.7mm	FA-238	24.576000 MHz	12 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380006516	3.2 x 2.5 x 0.7mm	FA-238	24.000000 MHz	12 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380007516	3.2 x 2.5 x 0.7mm	FA-238	50.000000 MHz	12 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380007616	3.2 x 2.5 x 0.7mm	FA-238	48.000000 MHz	10 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380007816	3.2 x 2.5 x 0.7mm	FA-238	48.000000 MHz	18 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380007916	3.2 x 2.5 x 0.7mm	FA-238	27.000000 MHz	10 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380008516	3.2 x 2.5 x 0.7mm	FA-238	48.000000 MHz	12 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380008816	3.2 x 2.5 x 0.7mm	FA-238	24.576000 MHz	12 pF	+/-30 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380008916	3.2 x 2.5 x 0.7mm	FA-238	24.000000 MHz	16 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C

無源晶振，準(zhǔn)確來說應(yīng)叫Crystal(晶體)，有源晶振則叫Oscillator(振蕩器)。無源晶振是在石英晶片的兩端鍍上電極而成，其兩管腳是無極性的。無源晶振自身無法震蕩，在工作時(shí)需要搭配外圍電路。在一定條件下，石英晶片會(huì)產(chǎn)生壓電效應(yīng)：晶片兩端的電場(chǎng)與機(jī)械形變會(huì)互相轉(zhuǎn)化。當(dāng)外加交變電壓的頻率與晶片的固有頻率相等時(shí)，晶體產(chǎn)生的振動(dòng)和電場(chǎng)強(qiáng)度最大，這稱為壓電諧振，類似與LC回路的諧振。

Product Number16	LxWxH	Model	Frequency	CL Value	Freq.tol. @+25°C	Freq.tol./Temp.range	Temperature range
Q22FA2380009116	3.2 x 2.5 x 0.7mm	FA-238	18.432000 MHz	20 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380009216	3.2 x 2.5 x 0.7mm	FA-238	25.000000 MHz	20 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380009316	3.2 x 2.5 x 0.7mm	FA-238	18.432000 MHz	12 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380009516	3.2 x 2.5 x 0.7mm	FA-238	25.000000 MHz	12 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380009816	3.2 x 2.5 x 0.7mm	FA-238	30.000000 MHz	10 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380010316	3.2 x 2.5 x 0.7mm	FA-238	27.000000 MHz	16 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380011416	3.2 x 2.5 x 0.7mm	FA-238	24.000000 MHz	18 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380012016	3.2 x 2.5 x 0.7mm	FA-238	24.576000 MHz	18 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380012716	3.2 x 2.5 x 0.7mm	FA-238	18.432000 MHz	16 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380012816	3.2 x 2.5 x 0.7mm	FA-238	18.432000 MHz	18 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380012916	3.2 x 2.5 x 0.7mm	FA-238	22.579200 MHz	10 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380013316	3.2 x 2.5 x 0.7mm	FA-238	16.000000 MHz	12 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380013716	3.2 x 2.5 x 0.7mm	FA-238	40.000000 MHz	18 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380013816	3.2 x 2.5 x 0.7mm	FA-238	27.000000 MHz	8 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380014016	3.2 x 2.5 x 0.7mm	FA-238	48.000000 MHz	16 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380014116	3.2 x 2.5 x 0.7mm	FA-238	32.000000 MHz	10 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380014616	3.2 x 2.5 x 0.7mm	FA-238	26.000000 MHz	10 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380014716	3.2 x 2.5 x 0.7mm	FA-238	26.000000 MHz	20 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380014816	3.2 x 2.5 x 0.7mm	FA-238	48.000000 MHz	12 pF	+/-30 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380014916	3.2 x 2.5 x 0.7mm	FA-238	18.432000 MHz	10 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C
Q22FA2380015616	3.2 x 2.5 x 0.7mm	FA-238	24.576000 MHz	10 pF	+/-50 ppm	+/-30 ppm	-20 to +70 °C