WINTRON石英晶體WCU-302A30-20-EXT-012.000MHz生產工藝
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QANTEK石英晶體產品數據手冊
QANTEK Technology Corporation成立于2005年，現已成為市場上最受認可、經驗最豐富的時間和頻率管理器件制造商之一。QANTEK康泰克晶振公司提供的產品范圍從簡單的音叉晶體到高穩定性和定制的恒溫晶體振蕩器。
QANTEK生產業內最廣泛的頻率控制產品線之一。產品范圍包括：石英晶體，石英晶體振蕩器，XO時鐘振蕩器、VCXO壓控晶體振蕩器、TCXO溫補晶體振蕩器、TCVCXO壓控溫補晶體振蕩器和OCXO恒溫晶體振蕩器，石英晶體過濾器，陶瓷諧振器等產品。所有產品都按照最高的ISO/TS質量標準制造。ECS汽車級石英振蕩器的個性化支持
50多年來，汽車行業一直承受著消費者對車輛更好的安全性、可靠性和性能的需求不斷增長的壓力。盡管引擎蓋下的一瞥呈現了汽車所有熟悉的機械工作方式，但今天的汽車實際上有60多個電子組件來保持平穩運行，同時為消費者提供他們期望的舒適和便利。這些處理器和組件中有幾個需要不同程度的定時精度，這導致需要多種不同的定時解決方案。這就是ECS晶振公司的AEC-Q200合格晶體的用武之地。
隨著電子行業在20世紀90年代開始蓬勃發展，汽車制造商在電子元件制造商的優先名單上繼續排名靠后。這種下降意味著公司制造符合汽車制造所需嚴格要求的部件變得更加困難。
標準的想法最終被提出，并因此誕生了汽車電子委員會，或AEC。該委員會由當時的汽車巨頭以及多家被動元件制造公司的專家組成，最終制定了沿用至今的標準。
當涉及到微電子設計時，汽車行業提出了一系列獨特的挑戰。它們不僅需要大量的組件——大多數汽車都有至少60種不同的電子組件來保持功能——而且還必須符合許多其他行業沒有的嚴格安全標準。多年來，在一個以指數級速度發展成為越來越依賴技術的社會的世界中，該行業一直在努力追趕。
高質量的石英晶體振蕩器只是ECS公司優質服務的開始
ECS進口晶振公司是汽車和交通電子產品設計工程師持久可靠的合作伙伴。無論是什么項目，ECS Inc。的高性能元件都能確保您的電路板按預期運行，并確保您的項目在汽車和交通市場產生影響。
Rubyquartz盧柏2024年展望:定位,導航和計時
人工智能、邊緣計算和低軌衛星的進步正在塑造2024年的定位、導航和計時機會。
對于任何依靠定位、導航和定時（PNT）數據開發產品和服務的人來說，2024年有望成為激動人心的一年。隨著人工智能、邊緣計算和低地球軌道衛星的不斷發展，未來12個月將出現獲得高精度位置和時間信息的新方法。更廣泛地說，還將有機會加快新產品和服務的上市時間。彼得曼32.768K有源晶振的優勢，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.
不斷精進自我的優質制造商彼得曼公司，致力于開發大量高質量的產品，隨著近幾年來，現代計量應用的時間要求大幅提高。現代計量應用的通常要求是7年后時間偏移1小時。應用的工作溫度范圍也應符合該值。最多1小時。7年后對應于32，768kHz下16ppm絕對值的頻率容差。傳統的32，768 kHz振蕩晶體不再可能滿足這些要求。彼得曼32.768K有源晶振的優勢.
一方面，這是因為32，768kHz僅在+25°C時具有10ppm的頻率容差，另一方面，在-40/+85°C溫度范圍內的溫度穩定性高于-180ppm。此外，老化約。計算精度時，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定性為+40/-220 ppm(包括+25°C時的調整、溫度穩定性和10年后的老化)。外部電路電容必須能夠補償由要同步的ic振蕩器級的內部電容和雜散電容引起的任何系統頻率偏移。為32，768晶振選擇無外部電路電容的布局包含很大的風險，因為在批量生產期間，32，768晶振的精度既不能校正也不能調整以適應突然變化的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計的，而不是為如今使用它的大多數應用而設計的。
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