WINTRON石英晶体WCU-302A30-20-EXT-012.000MHz生产工艺
|
|
Oscilent晶体型号参考推荐223-000312-20-TR
Oscilent品牌是一家产品线广泛的频率控制产品提供商，提供射频滤波设计和生产专业知识，专注于基于声表面波（SAW）谐振器的滤波器。Oscilent奥斯康利晶振公司由Abracon提供支持，该公司提供最新的技术设计支持和全球供应链灵活性，以解决客户当今面临的独特挑战。
QANTEK石英晶体产品数据手册
QANTEK Technology Corporation成立于2005年，现已成为市场上最受认可、经验最丰富的时间和频率管理器件制造商之一。QANTEK康泰克晶振公司提供的产品范围从简单的音叉晶体到高稳定性和定制的恒温晶体振荡器。
QANTEK生产业内最广泛的频率控制产品线之一。产品范围包括：石英晶体，石英晶体振荡器，XO时钟振荡器、VCXO压控晶体振荡器、TCXO温补晶体振荡器、TCVCXO压控温补晶体振荡器和OCXO恒温晶体振荡器，石英晶体过滤器，陶瓷谐振器等产品。所有产品都按照最高的ISO/TS质量标准制造。ECS汽车级石英振荡器的个性化支持
50多年来，汽车行业一直承受着消费者对车辆更好的安全性、可靠性和性能的需求不断增长的压力。尽管引擎盖下的一瞥呈现了汽车所有熟悉的机械工作方式，但今天的汽车实际上有60多个电子组件来保持平稳运行，同时为消费者提供他们期望的舒适和便利。这些处理器和组件中有几个需要不同程度的定时精度，这导致需要多种不同的定时解决方案。这就是ECS晶振公司的AEC-Q200合格晶体的用武之地。
随着电子行业在20世纪90年代开始蓬勃发展，汽车制造商在电子元件制造商的优先名单上继续排名靠后。这种下降意味着公司制造符合汽车制造所需严格要求的部件变得更加困难。
标准的想法最终被提出，并因此诞生了汽车电子委员会，或AEC。该委员会由当时的汽车巨头以及多家被动元件制造公司的专家组成，最终制定了沿用至今的标准。
当涉及到微电子设计时，汽车行业提出了一系列独特的挑战。它们不仅需要大量的组件——大多数汽车都有至少60种不同的电子组件来保持功能——而且还必须符合许多其他行业没有的严格安全标准。多年来，在一个以指数级速度发展成为越来越依赖技术的社会的世界中，该行业一直在努力追赶。
高质量的石英晶体振荡器只是ECS公司优质服务的开始
ECS进口晶振公司是汽车和交通电子产品设计工程师持久可靠的合作伙伴。无论是什么项目，ECS Inc。的高性能元件都能确保您的电路板按预期运行，并确保您的项目在汽车和交通市场产生影响。
Rubyquartz卢柏2024年展望:定位,导航和计时
人工智能、边缘计算和低轨卫星的进步正在塑造2024年的定位、导航和计时机会。
对于任何依靠定位、导航和定时（PNT）数据开发产品和服务的人来说，2024年有望成为激动人心的一年。随着人工智能、边缘计算和低地球轨道卫星的不断发展，未来12个月将出现获得高精度位置和时间信息的新方法。更广泛地说，还将有机会加快新产品和服务的上市时间。彼得曼32.768K有源晶振的优势，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.
不断精进自我的优质制造商彼得曼公司，致力于开发大量高质量的产品，随着近几年来，现代计量应用的时间要求大幅提高。现代计量应用的通常要求是7年后时间偏移1小时。应用的工作温度范围也应符合该值。最多1小时。7年后对应于32，768kHz下16ppm绝对值的频率容差。传统的32，768 kHz振荡晶体不再可能满足这些要求。彼得曼32.768K有源晶振的优势.
一方面，这是因为32，768kHz仅在+25°C时具有10ppm的频率容差，另一方面，在-40/+85°C温度范围内的温度稳定性高于-180ppm。此外，老化约。计算精度时，必须考虑10年后的30ppm。最差情况下，32.768K有源晶振的最大频率稳定性为+40/-220 ppm(包括+25°C时的调整、温度稳定性和10年后的老化)。外部电路电容必须能够补偿由要同步的ic振荡器级的内部电容和杂散电容引起的任何系统频率偏移。为32，768晶振选择无外部电路电容的布局包含很大的风险，因为在批量生产期间，32，768晶振的精度既不能校正也不能调整以适应突然变化的PCB条件。最初，32，768英寸晶体的交叉角度是为手表的最佳精度而设计的，而不是为如今使用它的大多数应用而设计的。
微信号
公众号
