大多數(shù)設(shè)計師都很熟悉通過穿孔門的拓?fù)浣Y(jié)構(gòu)，但很少有人真正明白如何做到這一點它能工作，更不用說如何工作了正確地設(shè)計。作為一個普通練習(xí)，大多數(shù)甚至不用付錢過多地注意普通有源振蕩器在其設(shè)計上直到它不能正常工作，通常已經(jīng)釋放到生產(chǎn)。這是不應(yīng)該的。許多系統(tǒng)或項目被推遲他們的部署是因為25分水晶沒有按預(yù)期工作。振蕩器應(yīng)接收適當(dāng)?shù)臄?shù)量在設(shè)計階段的注意力在制造階段之前。然后設(shè)計師就可以避開這個噩夢產(chǎn)品被退回的場景這個領(lǐng)域。CRYSTEK推出非常低的抖動的SMD時鐘振蕩器C3290-12.000,主要用于數(shù)字視頻

CPRO33-156.250	CRYSTEK晶振	CPRO	Active	XO (Standard)	156.25MHz	±25ppm	-40°C ~ 85°C
CVHD-950X-122.880	CRYSTEK晶振	CVHD-950	Active	VCXO	122.88MHz	-	-40°C ~ 85°C
C3290-1.544	CRYSTEK晶振	C3290	Active	XO (Standard)	1.544MHz	±100ppm	0°C ~ 70°C
C3290-1.843200	CRYSTEK晶振	C3290	Active	XO (Standard)	1.8432MHz	±100ppm	0°C ~ 70°C
C3290-10.000	CRYSTEK晶振	C3290	Active	XO (Standard)	10MHz	±100ppm	0°C ~ 70°C
C3290-12.000	CRYSTEK晶振	C3290	Active	XO (Standard)	12MHz	±100ppm	0°C ~ 70°C
C3290-12.288	CRYSTEK晶振	C3290	Active	XO (Standard)	12.288MHz	±100ppm	0°C ~ 70°C
C3290-12.352	CRYSTEK晶振	C3290	Active	XO (Standard)	12.352MHz	±100ppm	0°C ~ 70°C
C3290-14.318180	CRYSTEK晶振	C3290	Active	XO (Standard)	14.31818MHz	±100ppm	0°C ~ 70°C
C3290-15.360	CRYSTEK晶振	C3290	Active	XO (Standard)	15.36MHz	±100ppm	0°C ~ 70°C
C3290-16.000	CRYSTEK晶振	C3290	Active	XO (Standard)	16MHz	±100ppm	0°C ~ 70°C
C3290-16.384	CRYSTEK晶振	C3290	Active	XO (Standard)	16.384MHz	±100ppm	0°C ~ 70°C
C3290-18.432	CRYSTEK晶振	C3290	Active	XO (Standard)	18.432MHz	±100ppm	0°C ~ 70°C
C3290-19.440	CRYSTEK晶振	C3290	Active	XO (Standard)	19.44MHz	±100ppm	0°C ~ 70°C
C3290-2.048	CRYSTEK晶振	C3290	Active	XO (Standard)	2.048MHz	±100ppm	0°C ~ 70°C
C3290-20.000	CRYSTEK晶振	C3290	Active	XO (Standard)	20MHz	±100ppm	0°C ~ 70°C
C3290-20.480	CRYSTEK晶振	C3290	Active	XO (Standard)	20.48MHz	±100ppm	0°C ~ 70°C
C3290-24.000	CRYSTEK晶振	C3290	Active	XO (Standard)	24MHz	±100ppm	0°C ~ 70°C
C3290-24.704	CRYSTEK晶振	C3290	Active	XO (Standard)	24.704MHz	±100ppm	0°C ~ 70°C
C3290-25.000	CRYSTEK晶振	C3290	Active	XO (Standard)	25MHz	±100ppm	0°C ~ 70°C
C3290-3.686400	CRYSTEK晶振	C3290	Active	XO (Standard)	3.6864MHz	±100ppm	0°C ~ 70°C
C3290-30.000	CRYSTEK晶振	C3290	Active	XO (Standard)	30MHz	±100ppm	0°C ~ 70°C
C3290-32.000	CRYSTEK晶振	C3290	Active	XO (Standard)	32MHz	±100ppm	0°C ~ 70°C
C3290-32.768	CRYSTEK晶振	C3290	Active	XO (Standard)	32.768MHz	±100ppm	0°C ~ 70°C

我們將分析穿孔門振蕩函數(shù)通過分解來實現(xiàn)它的組件。(一個更嚴(yán)格分析超出了本文的范圍。)然而，簡單的分析就足夠了傳達(dá)《穿山甲》的要點有源晶體振蕩器的操作。此外，我們將提出一個簡單的設(shè)計問題來教如何在Pierce-gate初始值處導(dǎo)出。

我們可以用巴克豪森準(zhǔn)則來解釋穿透門拓?fù)涫侨绾喂ぷ鞯摹Ｔ摌?biāo)準(zhǔn)規(guī)定如下:周圍收益的乘積循環(huán)必須等于或大于一個在期望的振蕩頻率。環(huán)上的相移必須為0或2π的任意整數(shù)倍(360°)。

顯示了相移分析Pierce-gate。如果U1為-180°相移，另加-180°的外部組件需要滿足巴克豪森準(zhǔn)則。的相移會自動調(diào)整到精確嗎360°循環(huán)，以保持振蕩。Crystek晶振公司技術(shù)人員分析出如果U1提供-185°相移，其余的組件將自動提供-175°相移在適當(dāng)?shù)姆答侂娮鑂f用于線性化數(shù)字CMOS逆變器。射頻完成這一壯舉是通過充電逆變器的輸入電容，包括C1從輸出逆變器。換句話說，就是反饋電阻將邏輯門轉(zhuǎn)換為模擬放大器。很簡單的巧妙的技巧添加一個電阻。

C3290-33.000	CRYSTEK晶振	C3290	Active	XO (Standard)	33MHz	±100ppm	0°C ~ 70°C
C3290-33.333	CRYSTEK晶振	C3290	Active	XO (Standard)	33.333MHz	±100ppm	0°C ~ 70°C
C3290-35.000	CRYSTEK晶振	C3290	Active	XO (Standard)	35MHz	±100ppm	0°C ~ 70°C
C3290-4.000	CRYSTEK晶振	C3290	Active	XO (Standard)	4MHz	±100ppm	0°C ~ 70°C
C3290-40.000	CRYSTEK晶振	C3290	Active	XO (Standard)	40MHz	±100ppm	0°C ~ 70°C
C3290-44.736	CRYSTEK晶振	C3290	Active	XO (Standard)	44.736MHz	±100ppm	0°C ~ 70°C
C3290-45.000	CRYSTEK晶振	C3290	Active	XO (Standard)	45MHz	±100ppm	0°C ~ 70°C
C3290-49.152	CRYSTEK晶振	C3290	Active	XO (Standard)	49.152MHz	±100ppm	0°C ~ 70°C
C3290-50.000	CRYSTEK晶振	C3290	Active	XO (Standard)	50MHz	±100ppm	0°C ~ 70°C
C3290-51.840	CRYSTEK晶振	C3290	Active	XO (Standard)	51.84MHz	±100ppm	0°C ~ 70°C
C3290-6.176	CRYSTEK晶振	C3290	Active	XO (Standard)	6.176MHz	±100ppm	0°C ~ 70°C
C3290-7.372800	CRYSTEK晶振	C3290	Active	XO (Standard)	7.3728MHz	±100ppm	0°C ~ 70°C
C3290-8.000	CRYSTEK晶振	C3290	Active	XO (Standard)	8MHz	±100ppm	0°C ~ 70°C
C3290-60.000	CRYSTEK晶振	C3290	Active	XO (Standard)	60MHz	±100ppm	0°C ~ 70°C
C3290-64.000	CRYSTEK晶振	C3290	Active	XO (Standard)	64MHz	±100ppm	0°C ~ 70°C
C3290-66.666600	CRYSTEK晶振	C3290	Active	XO (Standard)	66.6666MHz	±100ppm	0°C ~ 70°C
C3390-1.544	CRYSTEK晶振	C33	Active	XO (Standard)	1.544MHz	±100ppm	0°C ~ 70°C
C3390-1.843200	CRYSTEK晶振	C33	Active	XO (Standard)	1.8432MHz	±100ppm	0°C ~ 70°C
C3390-10.000	CRYSTEK晶振	C33	Active	XO (Standard)	10MHz	±100ppm	0°C ~ 70°C
C3390-12.000	CRYSTEK晶振	C33	Active	XO (Standard)	12MHz	±100ppm	0°C ~ 70°C
C3390-12.288	CRYSTEK晶振	C33	Active	XO (Standard)	12.288MHz	±100ppm	0°C ~ 70°C
C3390-12.352	CRYSTEK晶振	C33	Active	XO (Standard)	12.352MHz	±100ppm	0°C ~ 70°C

反饋電阻一般包括在微集成電路或?qū)Ｓ眉呻娐分小Ｊ褂靡韵鲁绦騺泶_定是否反饋電阻器集成在IC中:不連接外部組件

(C1, C2, X1)，測量電壓在逆變器的輸入和輸出處。如果反饋電阻在內(nèi)部，那么輸入端和輸出端的電壓將在Vcc/2左右。
如果反饋電阻不在里面，然后逆變器就會被鎖住輸入和輸出都是a邏輯“1”或邏輯“0”或反之亦然。CRYSTEK推出非常低的抖動的SMD時鐘振蕩器C3290-12.000,主要用于數(shù)字視頻

C3390-14.318180	CRYSTEK晶振	C33	Active	XO (Standard)	14.31818MHz	±100ppm	0°C ~ 70°C
C3390-15.360	CRYSTEK晶振	C33	Active	XO (Standard)	15.36MHz	±100ppm	0°C ~ 70°C
C3390-16.000	CRYSTEK晶振	C33	Active	XO (Standard)	16MHz	±100ppm	0°C ~ 70°C
C3390-16.384	CRYSTEK晶振	C33	Active	XO (Standard)	16.384MHz	±100ppm	0°C ~ 70°C
C3390-18.432	CRYSTEK晶振	C33	Active	XO (Standard)	18.432MHz	±100ppm	0°C ~ 70°C
C3390-19.440	CRYSTEK晶振	C33	Active	XO (Standard)	19.44MHz	±100ppm	0°C ~ 70°C
C3390-2.048	CRYSTEK晶振	C33	Active	XO (Standard)	2.048MHz	±100ppm	0°C ~ 70°C
C3390-20.000	CRYSTEK晶振	C33	Active	XO (Standard)	20MHz	±100ppm	0°C ~ 70°C
C3390-20.480	CRYSTEK晶振	C33	Active	XO (Standard)	20.48MHz	±100ppm	0°C ~ 70°C
C3390-24.000	CRYSTEK晶振	C33	Active	XO (Standard)	24MHz	±100ppm	0°C ~ 70°C
C3390-24.576	CRYSTEK晶振	C33	Active	XO (Standard)	24.576MHz	±100ppm	0°C ~ 70°C
C3390-24.704	CRYSTEK晶振	C33	Active	XO (Standard)	24.704MHz	±100ppm	0°C ~ 70°C
C3390-25.000	CRYSTEK晶振	C33	Active	XO (Standard)	25MHz	±100ppm	0°C ~ 70°C
C3390-3.686400	CRYSTEK晶振	C33	Active	XO (Standard)	3.6864MHz	±100ppm	0°C ~ 70°C
C3390-30.000	CRYSTEK晶振	C33	Active	XO (Standard)	30MHz	±100ppm	0°C ~ 70°C
C3390-32.000	CRYSTEK晶振	C33	Active	XO (Standard)	32MHz	±100ppm	0°C ~ 70°C
C3390-32.768	CRYSTEK晶振	C33	Active	XO (Standard)	32.768MHz	±100ppm	0°C ~ 70°C
C3390-33.000	CRYSTEK晶振	C33	Active	XO (Standard)	33MHz	±100ppm	0°C ~ 70°C
C3390-33.333	CRYSTEK晶振	C33	Active	XO (Standard)	33.333MHz	±100ppm	0°C ~ 70°C
C3390-34.368	CRYSTEK晶振	C33	Active	XO (Standard)	34.368MHz	±100ppm	0°C ~ 70°C
C3390-35.000	CRYSTEK晶振	C33	Active	XO (Standard)	35MHz	±100ppm	0°C ~ 70°C
C3390-35.328	CRYSTEK晶振	C33	Active	XO (Standard)	35.328MHz	±100ppm	0°C ~ 70°C

Crystek Corporation® has been providing frequency products since 1958, including quartz crystals, XOs (Clock Oscillators), TCXOs (Temperature Compensated Crystal Oscillators), VCOs (Voltage Controlled Oscillators), and VCXOs (Voltage Controlled Crystal Oscillators). Crystek operates two divisions dedicated to frequency control. Crystek Crystals is dedicated to the development and manufacture of frequency products using quartz-based resonators. Crystek Microwave develops frequency control and support products for the microwave industry.

Crystek Corporation® 自 1958 年以來一直提供頻率產(chǎn)品，包括石英晶體、XO（時鐘振蕩器）、TCXO（溫度補(bǔ)償晶體振蕩器）、VCO（壓控振蕩器）和 VCXO（壓控晶體振蕩器）。Crystek經(jīng)營兩個專門負(fù)責(zé)頻率控制的部門。Crystek Crystals 致力于開發(fā)和制造使用石英晶體振蕩器的頻率產(chǎn)品

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