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pletronics普銳特晶振告訴你為什么 TCXO 有削波的正弦波輸出?

2022-05-21 08:54:59 

pletronics普銳特為什么 TCXO 有削波的正弦波輸出?FX532B-16.0000

大多數陶瓷 LCC 封裝的 TCXO晶振 僅提供削波正弦波輸出。這樣做的原因有很多,盡管它讓許多想要 CMOS 輸出電平的電路設計人員感到沮喪。

FQ5032BR-12.000 Fox Electronics C5BQ MHz Crystal 12MHz ±50ppm
FQ5032BR-12.000 Fox Electronics C5BQ MHz Crystal 12MHz ±50ppm
FQ5032BR-20.000 Fox Electronics C5BQ MHz Crystal 20MHz ±50ppm
FQ5032BR-20.000 Fox Electronics C5BQ MHz Crystal 20MHz ±50ppm
FQ5032BR-20.000 Fox Electronics C5BQ MHz Crystal 20MHz ±50ppm
FQ5032BR-24.000 Fox Electronics C5BQ MHz Crystal 24MHz ±50ppm
FQ5032BR-24.000 Fox Electronics C5BQ MHz Crystal 24MHz ±50ppm
FQ5032BR-24.000 Fox Electronics C5BQ MHz Crystal 24MHz ±50ppm
FQ7050B-10.000 Fox Electronics C7BQ MHz Crystal 10MHz ±30ppm
FQ7050B-10.000 Fox Electronics C7BQ MHz Crystal 10MHz ±30ppm
FQ7050B-10.000 Fox Electronics C7BQ MHz Crystal 10MHz ±30ppm
FQ7050BR-8.000 Fox Electronics C7BQ MHz Crystal 8MHz ±50ppm
FQ7050BR-8.000 Fox Electronics C7BQ MHz Crystal 8MHz ±50ppm
FQ7050BR-8.000 Fox Electronics C7BQ MHz Crystal 8MHz ±50ppm
FQ7050BR-6.000 Fox Electronics C7BQ MHz Crystal 6MHz ±50ppm
FQ7050BR-6.000 Fox Electronics C7BQ MHz Crystal 6MHz ±50ppm
FQ7050BR-6.000 Fox Electronics C7BQ MHz Crystal 6MHz ±50ppm
FQ3225B-16.000 Fox Electronics FQ3225B MHz Crystal 16MHz ±50ppm
FQ3225B-16.000 Fox Electronics FQ3225B MHz Crystal 16MHz ±50ppm
FQ3225B-16.000 Fox Electronics FQ3225B MHz Crystal 16MHz ±50ppm

CMOS 輸出會顯著增加 TCXO IC 的功耗。 IC 和封裝中產生的溫度梯度將限制實現最佳 TCXO 補償的能力。

FQ3225B-27.000 Fox Electronics FQ3225B MHz Crystal 27MHz ±50ppm
FQ3225B-27.000 Fox Electronics FQ3225B MHz Crystal 27MHz ±50ppm
FQ3225B-27.000 Fox Electronics FQ3225B MHz Crystal 27MHz ±50ppm
FQ3225BR-25.000 Fox Electronics FQ3225B MHz Crystal 25MHz ±50ppm
FQ3225BR-25.000 Fox Electronics FQ3225B MHz Crystal 25MHz ±50ppm
FQ3225BR-25.000 Fox Electronics FQ3225B MHz Crystal 25MHz ±50ppm
FQ3225BR-24.000 Fox Electronics FQ3225B MHz Crystal 24MHz ±50ppm
FQ3225BR-24.000 Fox Electronics FQ3225B MHz Crystal 24MHz ±50ppm
FQ3225BR-24.000 Fox Electronics FQ3225B MHz Crystal 24MHz ±50ppm
FQ3225BR-12.000 Fox Electronics FQ3225B MHz Crystal 12MHz ±50ppm
FQ3225BR-12.000 Fox Electronics FQ3225B MHz Crystal 12MHz ±50ppm
FQ3225BR-12.000 Fox Electronics FQ3225B MHz Crystal 12MHz ±50ppm
FQ1045AR-6.000 Fox Electronics FQ1045A MHz Crystal 6MHz ±30ppm
FQ1045AR-6.000 Fox Electronics FQ1045A MHz Crystal 6MHz ±30ppm
FQ1045AR-6.000 Fox Electronics FQ1045A MHz Crystal 6MHz ±30ppm
FQ1045AR-4.000 Fox Electronics FQ1045A MHz Crystal 4MHz ±30ppm
FQ1045AR-4.000 Fox Electronics FQ1045A MHz Crystal 4MHz ±30ppm
FQ1045AR-4.000 Fox Electronics FQ1045A MHz Crystal 4MHz ±30ppm
FQ1045AR-3.6864 Fox Electronics FQ1045A MHz Crystal 3.6864MHz ±30ppm
FQ1045AR-3.6864 Fox Electronics FQ1045A MHz Crystal 3.6864MHz ±30ppm

由于內部熱梯度導致 TCXO 不符合規格,可能的 CMOS 負載范圍很廣會改變補償設計。

當輸出電平改變時,CMOS 輸出會導致電源和接地瞬變。這種噪聲會對 TCXO 的相位噪聲性能產生不利影響。

FQ1045AR-3.6864 Fox Electronics FQ1045A MHz Crystal 3.6864MHz ±30ppm
FOXSLF/0368S Fox Electronics HC49SLF MHz Crystal 3.6864MHz ±50ppm
FOXLF120 Fox Electronics HC49ULF MHz Crystal 12MHz ±50ppm
FOXSDLF/128-20 Fox Electronics HC49SDLF MHz Crystal 12.288MHz ±50ppm
FOXSDLF/081-20 Fox Electronics HC49SDLF MHz Crystal 8.192MHz ±50ppm
FOXSDLF/098-20 Fox Electronics HC49SDLF MHz Crystal 9.8304MHz ±50ppm
FOXSDLF/196-20 Fox Electronics HC49SDLF MHz Crystal 19.6608MHz ±50ppm
FOXSLF/115 Fox Electronics HC49SLF MHz Crystal 11.0592MHz ±50ppm
FOXSLF/200 Fox Electronics HC49SLF MHz Crystal 20MHz ±50ppm
FOXSDLF/0368R-20/TR Fox Electronics HC49SDLF MHz Crystal 3.6864MHz ±50ppm
FOXSDLF/0368R-20/TR Fox Electronics HC49SDLF MHz Crystal 3.6864MHz ±50ppm
FOXSDLF/0368R-20/TR Fox Electronics HC49SDLF MHz Crystal 3.6864MHz ±50ppm
FOXSDLF/040R/TR Fox Electronics HC49SDLF MHz Crystal 4MHz ±50ppm
FOXSDLF/040R/TR Fox Electronics HC49SDLF MHz Crystal 4MHz ±50ppm
FOXSDLF/040R/TR Fox Electronics HC49SDLF MHz Crystal 4MHz ±50ppm
FOXSDLF/060R-20/TR Fox Electronics HC49SDLF MHz Crystal 6MHz ±50ppm
FOXSDLF/060R-20/TR Fox Electronics HC49SDLF MHz Crystal 6MHz ±50ppm
FOXSDLF/060R-20/TR Fox Electronics HC49SDLF MHz Crystal 6MHz ±50ppm
FOXSDLF/073R-20/TR Fox Electronics HC49SDLF MHz Crystal 7.3728MHz ±50ppm
FOXSDLF/073R-20/TR Fox Electronics HC49SDLF MHz Crystal 7.3728MHz ±50ppm

CMOS 輸出會產生更大的 EMI/RFI 信號,這可能會導致難以滿足美國 FCC 和其他國家最終系統的輻射能量限制。削波的正弦波,既是低幅度又主要是正弦波,導致低信號電平和更少的諧波。

FOXSDLF/073R-20/TR Fox Electronics HC49SDLF MHz Crystal 7.3728MHz ±50ppm
FOXSDLF/100R-20/TR Fox Electronics HC49SDLF MHz Crystal 10MHz ±50ppm
FOXSDLF/100R-20/TR Fox Electronics HC49SDLF MHz Crystal 10MHz ±50ppm
FOXSDLF/100R-20/TR Fox Electronics HC49SDLF MHz Crystal 10MHz ±50ppm
FOXSDLF/115R-20/TR Fox Electronics HC49SDLF MHz Crystal 11.0592MHz ±50ppm
FOXSDLF/115R-20/TR Fox Electronics HC49SDLF MHz Crystal 11.0592MHz ±50ppm
FOXSDLF/115R-20/TR Fox Electronics HC49SDLF MHz Crystal 11.0592MHz ±50ppm
FOXSDLF/143R-20/TR Fox Electronics HC49SDLF MHz Crystal 14.31818MHz ±50ppm
FOXSDLF/143R-20/TR Fox Electronics HC49SDLF MHz Crystal 14.31818MHz ±50ppm
FOXSDLF/143R-20/TR Fox Electronics HC49SDLF MHz Crystal 14.31818MHz ±50ppm
FOXSDLF/240FR-20/TR Fox Electronics HC49SDLF MHz Crystal 24MHz ±50ppm
FOXSDLF/240FR-20/TR Fox Electronics HC49SDLF MHz Crystal 24MHz ±50ppm
FOXSDLF/240FR-20/TR Fox Electronics HC49SDLF MHz Crystal 24MHz ±50ppm
FOXSDLF250F-20 Fox Electronics HC49SDLF MHz Crystal 25MHz ±50ppm
FX252BS-20.000 Fox Electronics FX252B MHz Crystal 20MHz ±50ppm
FQ5032BR-10.000 Fox Electronics C5BQ MHz Crystal 10MHz ±30ppm
FQ5032BR-10.000 Fox Electronics C5BQ MHz Crystal 10MHz ±30ppm
FQ5032BR-10.000 Fox Electronics C5BQ MHz Crystal 10MHz ±30ppm
FQ5032BR-16.000 Fox Electronics C5BQ MHz Crystal 16MHz ±50ppm
FQ5032BR-16.000 Fox Electronics C5BQ MHz Crystal 16MHz ±50ppm

使用這些 TCXO 的許多應用都有 ASIC 輸入,可以接受削波正弦波并在內部轉換為 CMOS 邏輯電平。

FQ5032BR-16.000 Fox Electronics C5BQ MHz Crystal 16MHz ±50ppm
FX532B-10.000 Fox Electronics FX532B MHz Crystal 10MHz ±50ppm
FQ7050B-11.0592 Fox Electronics C7BQ MHz Crystal 11.0592MHz ±30ppm
FQ7050B-11.0592 Fox Electronics C7BQ MHz Crystal 11.0592MHz ±30ppm
FQ7050B-11.0592 Fox Electronics C7BQ MHz Crystal 11.0592MHz ±30ppm
FX425B-16.000 Fox Electronics FX425B MHz Crystal 16MHz ±50ppm
FQ5032B-19.6608 Fox Electronics C5BQ MHz Crystal 19.6608MHz ±30ppm
FQ5032B-14.7456 Fox Electronics C5BQ MHz Crystal 14.7456MHz ±30ppm
FQ5032B-14.7456 Fox Electronics C5BQ MHz Crystal 14.7456MHz ±30ppm
FQ5032B-14.7456 Fox Electronics C5BQ MHz Crystal 14.7456MHz ±30ppm
FQ5032B-10.000 Fox Electronics C5BQ MHz Crystal 10MHz ±30ppm
FQ3225B-20.000 Fox Electronics FQ3225B MHz Crystal 20MHz ±50ppm
FQ3225BR-16.000 Fox Electronics FQ3225B MHz Crystal 16MHz ±50ppm
FQ3225BR-16.000 Fox Electronics FQ3225B MHz Crystal 16MHz ±50ppm
FQ3225BR-16.000 Fox Electronics FQ3225B MHz Crystal 16MHz ±50ppm
FQ3225BR-20.000 Fox Electronics FQ3225B MHz Crystal 20MHz ±50ppm
FQ3225BR-20.000 Fox Electronics FQ3225B MHz Crystal 20MHz ±50ppm
FQ3225BR-20.000 Fox Electronics FQ3225B MHz Crystal 20MHz ±50ppm
FQ1045A-4.9152 Fox Electronics FQ1045A MHz Crystal 4.9152MHz ±30ppm
603-12-67 Fox Electronics FX325BS MHz Crystal 12MHz ±50ppm
617-24.572675-1 Fox Electronics FX216B MHz Crystal 24.572675MHZ ±50ppm
FX532B-11.0592 Fox Electronics FX532B MHz Crystal 11.0592MHz ±50ppm
FX532B-12.000 Fox Electronics FX532B MHz Crystal 12MHz ±50ppm
FX532B-16.000 Fox Electronics FX532B MHz Crystal 16MHz ±50ppm
FX532B-20.000 Fox Electronics FX532B MHz Crystal 20MHz ±50ppm

請參閱我們關于將削波正弦波電平轉換為 CMOS 的常見問題解答。這很容易做到,而且成本低。有意者聯系0755-27876565

FX532B-24.000 Fox Electronics FX532B MHz Crystal 24MHz ±50ppm
FX532B-24.576 Fox Electronics FX532B MHz Crystal 24.576MHz ±50ppm
FX425B-20.000 Fox Electronics FX425B MHz Crystal 20MHz ±50ppm
FX425B-24.000 Fox Electronics FX425B MHz Crystal 24MHz ±50ppm
FX425B-24.576 Fox Electronics FX425B MHz Crystal 24.576MHz ±50ppm
217-3.579545-12 Fox Electronics FC MHz Crystal 3.579545MHz ±50ppm
603-25-203 Fox Electronics FX325BS MHz Crystal 25MHz ±50ppm
FPXLF0368-20 Fox Electronics FPXLF MHz Crystal 3.6864MHz ±50ppm
FPXLF0368-20 Fox Electronics FPXLF MHz Crystal 3.6864MHz ±50ppm
FPXLF0368-20 Fox Electronics FPXLF MHz Crystal 3.6864MHz ±50ppm
FPXLF0368S Fox Electronics FPXLF MHz Crystal 3.6864MHz ±50ppm
FPXLF036S Fox Electronics FPXLF MHz Crystal 3.579545MHz ±50ppm
FPXLF040 Fox Electronics FPXLF MHz Crystal 4MHz ±50ppm
FPXLF049-20 Fox Electronics FPXLF MHz Crystal 4.9152MHz ±50ppm
FPXLF073-20 Fox Electronics FPXLF MHz Crystal 7.3728MHz ±50ppm
FPXLF080 Fox Electronics FPXLF MHz Crystal 8MHz ±50ppm
FPXLF080-20 Fox Electronics FPXLF MHz Crystal 8MHz ±50ppm
FPXLF100-20 Fox Electronics FPXLF MHz Crystal 10MHz ±50ppm
FPXLF115-20 Fox Electronics FPXLF MHz Crystal 11.0592MHz ±50ppm
FPXLF120-20 Fox Electronics FPXLF MHz Crystal 12MHz ±50ppm
FPXLF143-20 Fox Electronics FPXLF MHz Crystal 14.31818MHz ±100ppm
FPXLF160 Fox Electronics FPXLF MHz Crystal 16MHz ±50ppm
FPXLF160-20 Fox Electronics FPXLF MHz Crystal 16MHz ±50ppm
FPXLF200-20 Fox Electronics FPXLF MHz Crystal 20MHz ±50ppm
FPXLF250F-20 Fox Electronics FPXLF MHz Crystal 25MHz ±50ppm
603-40-48 Fox Electronics FX325BS MHz Crystal 40MHz ±20ppm
603-25-261 Fox Electronics FX325BS MHz Crystal 25MHz ±20ppm
FOXSLF/049-20 Fox Electronics - MHz Crystal 4.9152MHz -

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