FMI晶振FMXMC16S118HJA-26.000MHZ-CM頻率控制元器件詳情

晶體

MTI-milliren石英晶體振蕩器老化性能研究

石英晶體振蕩器的超長(zhǎng)時(shí)間老化性能研究

摘要
將提供長(zhǎng)達(dá)1900天的延長(zhǎng)老化測(cè)試結(jié)果，以深入了解石英晶體振蕩器的長(zhǎng)期漂移特性。將對(duì)結(jié)果進(jìn)行討論，以顯示環(huán)境條件和功率開(kāi)關(guān)循環(huán)變化的影響。

1.介紹 

對(duì)幾種類(lèi)型的石英晶體振蕩器進(jìn)行了非常長(zhǎng)時(shí)間尺度的老化測(cè)量，包括AT和SC切割烘箱控制晶體振蕩器（OCXO）以及溫度補(bǔ)償晶體振蕩器（TCXO）。）盡管每個(gè)OCXO在生產(chǎn)中都會(huì)老化，但通常只在滿(mǎn)足老化率規(guī)范所需的時(shí)間段內(nèi)收集數(shù)據(jù)。由于確定真正的老化性能需要很長(zhǎng)的測(cè)試時(shí)間，TCXOs很少老化。通常無(wú)法獲得大組振蕩器長(zhǎng)期老化性能的研究結(jié)果。

KVG石英振蕩器詳情T(mén)-53S3D4085KXH-LF-16.000MHz

石英振蕩器是一種產(chǎn)生高頻交流電壓的電路。作為頻率決定元件，振蕩器包含一個(gè)振動(dòng)石英。石英振蕩器以其頻率精度和頻率穩(wěn)定性令人信服。在實(shí)踐中，電路被廣泛用作無(wú)線(xiàn)電設(shè)備、處理器和微控制器的時(shí)鐘。因此，石英和石英晶體振蕩器被認(rèn)為是數(shù)據(jù)傳輸和電信中頻率控制的最重要組成部分也就不足為奇了。其主要優(yōu)點(diǎn)包括高諧振性能、各種振蕩器和高頻率穩(wěn)定性。

Macrobizes擁有大量標(biāo)準(zhǔn)頻率和規(guī)格的成品庫(kù)存，可立即發(fā)貨。雙重“現(xiàn)貨或定制”系統(tǒng)確保了高水平的客戶(hù)服務(wù)。Macrobizes鼓勵(lì)與客戶(hù)建立設(shè)計(jì)和開(kāi)發(fā)合作伙伴關(guān)系。對(duì)于新技術(shù)應(yīng)用和主要產(chǎn)品更新，我們的客戶(hù)擁有經(jīng)驗(yàn)豐富的設(shè)計(jì)師和生產(chǎn)工程師的優(yōu)勢(shì)和安全性，他們了解頻率控制產(chǎn)品范圍并為他們提供幫助。我們的客戶(hù)可以隨時(shí)獲得設(shè)計(jì)、生產(chǎn)和物流運(yùn)作方面的幫助。Macrobizes是石英晶體、石英晶體振蕩器、TCXO、VCXO、OCXO制造商和供應(yīng)商。我們?yōu)槟母哔|(zhì)量產(chǎn)品提供可靠的石英晶體。

在現(xiàn)代電子的快節(jié)奏世界中，對(duì)提高精度和性能的需求至關(guān)重要。溫補(bǔ)晶體振蕩器（TCXOs）已成為技術(shù)進(jìn)步的燈塔，滿(mǎn)足了對(duì)更小封裝、在不同溫度下無(wú)可挑剔的頻率穩(wěn)定性和卓越相位噪聲性能的需求。Pletronics的TCXO設(shè)備深入了解TCXO的重要性，以及它們?nèi)绾螐氐赘淖円蕾?lài)精確定時(shí)和信號(hào)同步的行業(yè)。

1，更小的包裝：重新定義小型化（2.0x1.6mm、2.5x2.0mm、3.2x2.5mm）石英晶振

小型化的競(jìng)賽刺激了各行業(yè)制造更小、更時(shí)尚的設(shè)備。TCXO通過(guò)在不影響性能的情況下提供緊湊的解決方案，在這一趨勢(shì)中發(fā)揮著關(guān)鍵作用。憑借其固有的高效設(shè)計(jì)，TCXO被設(shè)計(jì)成能夠緊密地適應(yīng)現(xiàn)代小工具日益受限的空間。無(wú)論是智能家居產(chǎn)品還是無(wú)線(xiàn)通信設(shè)備，TCXO有源晶振都有助于縮小設(shè)備的整體尺寸，確保技術(shù)對(duì)用戶(hù)來(lái)說(shuō)既不引人注目又方便。

Pletronics新TCXO系列

TCXO的崛起標(biāo)志著精密電子領(lǐng)域的一個(gè)重要里程碑。憑借其提供更小封裝的能力、在寬溫度范圍內(nèi)的卓越頻率穩(wěn)定性和卓越的相位噪聲性能，TCXO貼片晶振正在重新定義準(zhǔn)確性和可靠性的標(biāo)準(zhǔn)。隨著行業(yè)不斷突破創(chuàng)新的邊界，TCXO證明了人類(lèi)的獨(dú)創(chuàng)性，提升了依賴(lài)完美時(shí)序和信號(hào)同步的設(shè)備和系統(tǒng)的潛力。

Abracon航空航天和國(guó)防產(chǎn)品詳情
Abracon是一家值得信賴(lài)的領(lǐng)先和創(chuàng)新電子元件供應(yīng)商，包括頻率控制、定時(shí)、電源、磁性、射頻和天線(xiàn)解決方案。

Abracon是許多航空航天和國(guó)防領(lǐng)域使用的零部件的全球供應(yīng)商。隨著在空中、海上、陸地、太空以及個(gè)人設(shè)備中的部署，該行業(yè)要求最高的性能和系統(tǒng)可靠性。
設(shè)計(jì)需要對(duì)突然的溫度變化、振動(dòng)、灰塵和濕度具有魯棒性。同時(shí)，最高的技術(shù)性能對(duì)于滿(mǎn)足軍事和航空標(biāo)準(zhǔn)至關(guān)重要。應(yīng)用包括雷達(dá)系統(tǒng)、無(wú)線(xiàn)電通信、電子戰(zhàn)系統(tǒng)、定位和制導(dǎo)以及監(jiān)視和成像。
NEL頻率控制公司業(yè)界領(lǐng)先的超低相位噪聲OCXO和TCXO晶振精密頻率控制解決方案經(jīng)過(guò)優(yōu)化，采用不受ITAR限制、符合RoHS標(biāo)準(zhǔn)、符合MIL-Spec和COTS(商用現(xiàn)貨)的解決方案，以最小的封裝尺寸實(shí)現(xiàn)最高的性能。

彼得曼32.768K有源晶振的優(yōu)勢(shì)，Time requirements in modern metering applications have massively increased in the last few years. The usual requirement in modern metering applications is a time offset of 1 hour after 7 years. It should also be possible for the operating temperature range of the application to comply with this value. 1 hour max. after 7 years corresponds to a frequency tolerance of ±16 ppm absolute at 32,768 kHz. It is no longer possible for conventional 32,768 kHz oscillating crystals to meet these requirements.

On the one hand, this is because 32,768 kHz are only available with a frequency tolerance of ±10ppm at +25°C, on the other hand, the temperature stability over a temperature range of -40/+85°C is more then -180 ppm. Moreover, ageing of approx. ±30 ppm after 10 years must be taken into account when calculating accuracy. In the worst case, a 32,768 kHz crystal has a maximum frequency stability of +40/-220 ppm (including adjustment at +25°C, temperature stability and ageing after 10 years). External circuit capacitance must be able to compensate any systematic frequency offset caused by the internal capacitance of the oscillator stage of the IC to be synchronised and by stray capacitance. The selection of a layout without external circuit capacitance for the 32,768 crystal involves a great risk because the accuracy of the 32,768 crystal can neither be corrected nor adjusted to suddenly changing PCB conditions during series production. Initially, the intersection angle for the 32,768 crystal was designed for optimal accuracy in wristwatches, and not for most of the applications for which it is used nowadays.

In order to meet the highly accurate time requirements, we as a clocking specialist offer the series ULPPO ultra low power 32,768 kHz oscillator. This oscillator can be operated with each voltage within a VDD range of 1.5 to 3.63 VDC. The specified current consumption is 0.99 µA. The temperature stability of ULPPOs is ±5 ppm over a temperature range of -40/+85°C. Frequency stability (delivery accuracy plus temperature stability) is ±10 ppm, and ageing after 20 years is ±2 ppm. Thus the maximum overall stability of ULPPOs is ±12 ppm including the ageing after 10 years. These are industry best parameters.

No external circuit capacitance is required for the circuiting of the ultra small housing (housing area: 1.2 mm2). The input stage of the IC installed in the ULPPO independently filters the supply voltage. Compared to crystals, ULPPOs save a lot of space on the printed circuit board so that the packing density can be increased, and smaller printed circuit boards can be designed. The adjustment of the amplitude further reduces the power consumption of the ULPPO.

For space calculations, both external circuit capacitances for a crystal on the printed circuit board must also be taken into account. With its two external circuit capacitances, even the smallest 32,768 kHz crystal requires more space on the PCB than ULPPOs do.

Moreover, very small 32,768 kHz crystals have very high resistances which usually cannot be safely overcome by the oscillator stages to be synchronised because the oscillator stages of the ICs or RTCs to be synchronised have very high tolerances as well. Therefore, sudden response time problems in the field might occur which can be ruled out with ULPPOs. Thus, the safe operation of the application is possible with ULPPOs under all circumstances.

Oscillator stages consume a lot of energy to keep a 32,768 crystal oscillating. Usually, the input stage of the MCU can be directly circuited with the LVCMOS signal of the ULPPO (usually Xin). Thus the input stage of the MCU can be deactivated (bypass function) so that the energy saved can be used for the calculation of the system power consumption of the meter. Moreover, ULPPOs are able to synchronise several ICs at a time. Due to the very high accuracy of the ULPPO, less time synchronisations are required, which also saves system power.

Of course, ULPPOs can be used in any applications which require miniaturised ultra low power 32,768 kHz oscillators such as smartphones, tablets, GPS, fitness watches, health and wellness applications, wireless keyboards, timing systems, timing applications, wearables, IoT, home automation, etc. Due to the high degree of accuracy of 32,768 kHz oscillators, the standby time or even the hypernation time in hypernation technology applications can be significantly increased so that a high amount of system power can be saved due to the significantly lower battery-intensive synchronisation cycles. Thus the 32,768 kHz oscillator is the better choice compared to 32,768 kHz crystals. Ultra low power 32,768 kHz oscillators are available with diverse accuracy variations – see also the ULPO-RB1 and -RB2 series.

不斷精進(jìn)自我的優(yōu)質(zhì)制造商彼得曼公司，致力于開(kāi)發(fā)大量高質(zhì)量的產(chǎn)品，隨著近幾年來(lái)，現(xiàn)代計(jì)量應(yīng)用的時(shí)間要求大幅提高。現(xiàn)代計(jì)量應(yīng)用的通常要求是7年后時(shí)間偏移1小時(shí)。應(yīng)用的工作溫度范圍也應(yīng)符合該值。最多1小時(shí)。7年后對(duì)應(yīng)于32，768kHz下16ppm絕對(duì)值的頻率容差。傳統(tǒng)的32，768 kHz振蕩晶體不再可能滿(mǎn)足這些要求。彼得曼32.768K有源晶振的優(yōu)勢(shì).

一方面，這是因?yàn)?2，768kHz僅在+25°C時(shí)具有10ppm的頻率容差，另一方面，在-40/+85°C溫度范圍內(nèi)的溫度穩(wěn)定性高于-180ppm。此外，老化約。計(jì)算精度時(shí)，必須考慮10年后的30ppm。最差情況下，32.768K有源晶振的最大頻率穩(wěn)定性為+40/-220 ppm(包括+25°C時(shí)的調(diào)整、溫度穩(wěn)定性和10年后的老化)。外部電路電容必須能夠補(bǔ)償由要同步的ic振蕩器級(jí)的內(nèi)部電容和雜散電容引起的任何系統(tǒng)頻率偏移。為32，768晶振選擇無(wú)外部電路電容的布局包含很大的風(fēng)險(xiǎn)，因?yàn)樵谂可a(chǎn)期間，32，768晶振的精度既不能校正也不能調(diào)整以適應(yīng)突然變化的PCB條件。最初，32，768英寸晶體的交叉角度是為手表的最佳精度而設(shè)計(jì)的，而不是為如今使用它的大多數(shù)應(yīng)用而設(shè)計(jì)的。

Rakon發(fā)布適用于低軌衛(wèi)星星座的小型GNSS接收器

Rakon瑞康晶振公司自豪地推出其新的GNSS接收器數(shù)據(jù)庫(kù)(子板)，這是其用于新空間任務(wù)的下一代設(shè)備套件中的第一款產(chǎn)品。GNSS接收機(jī)DB是一種低功耗的緊湊型現(xiàn)成GNSS接收機(jī)，專(zhuān)門(mén)為小型和超小型衛(wèi)星設(shè)計(jì)。憑借多頻段和多星座支持，該設(shè)備可以同時(shí)處理多達(dá)448個(gè)通道的信號(hào)，以提供高性能的位置、速度和時(shí)序。

我們的微型系統(tǒng)已被證明可以增強(qiáng)當(dāng)前和傳統(tǒng)平臺(tái)，因此我們的客戶(hù)可以在減小尺寸和重量的同時(shí)提高性能。

AXTAL新型高穩(wěn)定性TCXO