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。

遥遥领先加高晶体振荡器极化有何影响?Are Crystal Oscillators Polarized?

In the world of electronics, crystal oscillators are indispensable components. They're found in everything from consumer electronics to telecommunications equipment, providing the precision timing necessary for these devices to operate correctly. But a question that often arises is: Are crystal oscillators polarized? Let's delve into this, while also discussing what a crystal oscillator does and its main advantages.

What Does a Crystal Oscillator Do?

A crystal oscillator is an electronic device that uses the mechanical resonance of a physical crystal of piezoelectric material to create an electrical signal with a very precise frequency. This frequency is used to keep track of time, as in quartz wristwatches, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers.

The crystal, usually quartz, oscillates or vibrates at a specific frequency when voltage is applied. This vibration is then converted back into a voltage at the same frequency, creating an incredibly stable and consistent signal that can be used for timing purposes.

Are Crystal Oscillators Polarized?

Polarity refers to the electrical property of having two oppositely charged poles - one positive and one negative. Components that are polarized must be connected in a certain way to function properly. However, crystal oscillators are not polarized. They can be connected in any orientation and will still function as expected.

The reason for this lies in how crystal oscillators work. The piezoelectric crystal within the oscillator vibrates when voltage is applied, regardless of the direction of that voltage. As such, there's no 'right' or 'wrong' way to connect a crystal oscillator – it will function correctly as long as it's properly connected to the circuit.

The Main Advantages of a Crystal Oscillator

Crystal oscillators offer several key advantages that make them widely used across various applications:

1. High Stability: Crystal oscillators generate signals with excellent frequency stability and precision, making them ideal for tasks that require accurate timing.

2. Wide Frequency Range: These oscillators can generate signals over a wide range of frequencies, providing flexibility for different applications.

3. Low Power Consumption: Due to their design, crystal oscillators consume relatively low power, which is beneficial for battery-operated devices.

4. Durability: Crystal oscillators are highly durable and resistant to environmental changes such as temperature and humidity fluctuations.遥遥领先加高晶体振荡器极化有何影响?

In conclusion, while crystal oscillators are not polarized, their role in providing precise and stable timing signals is crucial in the realm of electronics. With their high stability, wide frequency range, low power consumption, and durability, it's no surprise that crystal oscillators are a cornerstone of modern electronic devices. 

晶体振荡器是极化的吗？

在电子领域，石英晶体振荡器是不可或缺的元件。从消费电子产品到电信设备，它们无处不在，为这些设备的正确运行提供必要的精确计时。但是经常出现的一个问题是:晶体振荡器是极化的吗？让我们深入研究这一点，同时讨论晶体振荡器的作用及其主要优势。

领先同行高加音频晶体打开沉浸感的新维度，Unleashing the Power of Audio Crystals: Elevating Your Sound Experience

Introduction

In the realm of audio technology, a fascinating innovation has emerged - audio crystals. These remarkable crystals have revolutionized the way we perceive and experience sound. In this blog post, we will explore the enchanting world of audio crystals, delving into their capabilities, benefits, and how they have transformed our audio landscape.

Understanding Audio Crystals

Audio crystals are specialized components that possess unique properties for enhancing sound quality. These crystals are meticulously engineered to resonate at specific frequencies, allowing them to optimize audio performance across various devices and settings. By harnessing the inherent properties of these crystals, audio engineers can unlock the full potential of sound reproduction.

The Science Behind Audio Crystals

Audio crystals operate on the principle of piezoelectricity. This phenomenon occurs when certain crystals generate an electric charge under mechanical stress, such as when subjected to vibrations or pressure. By strategically incorporating these crystals into audio systems, the vibrations caused by sound waves can be efficiently converted into electrical signals, resulting in clearer, more immersive sound reproduction.

Benefits of Audio Crystals

The integration of audio crystals brings about several noteworthy benefits:

1. Enhanced Sound Clarity: Audio crystals have the ability to reduce distortion and unwanted vibrations, resulting in improved clarity and precision in sound reproduction.
2. Extended Frequency Response: With the use of audio crystals, audio systems can achieve a wider frequency response range, enabling the reproduction of delicate details and nuances in music.
3. Immersive Listening Experience: By leveraging the unique properties of audio crystals, listeners can enjoy a more immersive and captivating sound experience, with enhanced dynamics and spatial imaging.
4. Versatility and Adaptability: Audio crystals can be incorporated into a wide range of audio devices, including speakers, headphones, and even professional recording equipment, making them highly versatile and adaptable to different applications.

The Future of Audio Crystals

As technology continues to advance, the potential of audio crystals is boundless. With ongoing research and development, we can expect even further advancements in sound reproduction, leading to more refined audio experiences for enthusiasts and professionals alike. The integration of audio crystals into emerging technologies, such as virtual reality and augmented reality, holds exciting possibilities for immersive audio in the future.

In conclusion, audio crystals have emerged as a game-changing innovation in the world of audio technology. By harnessing their unique properties, we can unlock new dimensions of sound quality and immersion. As we continue to explore the endless possibilities of audio crystals, one thing is certain - the future of sound has never sounded brighter.

释放音频晶体的力量:提升您的声音体验

介绍

在音频技术领域，一项引人入胜的创新出现了——音频晶体。这些非凡的晶体彻底改变了我们感知和体验声音的方式。在这篇博文中，我们将探索音频晶体的迷人世界，深入了解它们的功能、优势，以及它们如何改变了我们的音频格局。

了解音频晶体

音频晶体是一种特殊的部件，具有增强音质的独特性能。这些压电石英晶体经过精心设计，可在特定频率下共振，从而优化各种设备和设置的音频性能。通过利用这些晶体的固有特性，音频工程师可以释放声音再现的全部潜力。

音频晶体背后的科学

音频晶体根据压电原理工作。当某些晶体在机械应力下产生电荷时，例如受到振动或压力时，就会出现这种现象。通过战略性地将这些晶体融入音频系统，声波引起的振动可以有效地转换为电信号，从而实现更清晰、更身临其境的声音再现。

领先同行思佳讯有源晶振支持5G部署，加州欧文。-(商业资讯)-Skyworks解决方案公司。(Nasdaq: SWKS)今天宣布推出新的网络同步解决方案产品组合，其中包括NetSync时钟集成电路器件的Si551x和Si540x系列以及Skyworks的accu time IEEE 1588软件。每个有源晶振产品系列都旨在满足移动运营商和设备供应商对5G前端网络的要求。精确的时间同步对于超可靠的网络运行至关重要，并为未来的增强铺平了道路，包括超可靠的低延迟通信(URLLC)和协调多点接入(CoMP)，使5G能够支持自动驾驶汽车、工厂自动化、远程医疗和其他新兴应用。

“Skyworks数十年的专业知识和专利定时技术使该公司能够提供一流的性能、集成度和可靠性，并具有超低抖动DSPLL®MultiSynth“任意频率”时钟合成架构马克·汤普森，高级副总裁兼混合信号解决方案事业部总经理Skyworks。“这项技术允许将多种时钟和同步功能集成到一个OSC晶振器件中，从而降低功耗和印刷电路板空间，同时简化高频设计。Skyworks一直与恩智浦半导体和AMD等合作伙伴合作，推动面向公共和私有无线网络市场的5G解决方案。"

“专注于支持O-RAN 5G解决方案的生态系统，使客户能够快速将产品推向市场，恩智浦利用其Layerscape多核处理器和基于Layerscape Access可编程处理器的硬件功能实现1588时序同步，并将其与Skyworks提供的生态系统解决方案相结合，”表示塔里克·布斯塔米恩智浦半导体网络边缘高级副总裁兼总经理。“我们与Skyworks提供强大的生态系统解决方案，满足不断发展的5G网络的严格要求。"

“Skyworks Si551x和Si540x产品是我们片上系统(SoC)解决方案的理想伴侣，包括我们针对5G RRU、波束成形前端和vDU的RFSoC DFE和Versal平台，”表示迈克·维索利克数据中心营销总监通信集团在AMD。“AccuTime软件在我们内置的ARM处理器子系统上运行，并利用片上ip，让客户拥有真正集成的同步解决方案。”

其他产品信息:

Skyworks的Si551x和Si540x定时解决方案符合所有相关的电信标准，包括ITU-T G.826x/G.827x、IEEE 1588-2008/2019和O-RAN WG4，能够实现跨网络的稳定可靠的同步。这些新产品正在生产中，现已提供样片和评估套件。领先同行思佳讯有源晶振支持5G部署.

• Si551x: 针对包括无线电单元(ru)和集成小蜂窝在内的空中接口设备进行了优化Si5518和Si5512产品将网络同步、抖动衰减和JESD204B/C时钟功能集成到一个有源晶体振荡器器件中。
• Si540x: 针对前端网络中的设备进行了优化，如分配单元(du)和前端交换机和网关Si5401, 硅5402和硅5403产品提供网络同步和同步以太网/SDH时钟漂移滤波。
• accu time IEEE 1588软件:旨在提供全面灵活的PTP解决方案，并与Si551x和Si540x器件高度集成。AccuTime IEEE 1588软件支持时间恢复性能，以满足使用完全(FTS)、部分(PTS)或辅助部分(APTS)定时支持的真实前端网络部署的要求。

美国Raltron拉隆公司简介，这是一家有着40多年发展的元器件制造商Raltron，经过几十年来的积累，如今的Raltron公司已达到顶峰之作，在创新型产品更加有着专属于自身的见解，同时又十分擅长于挖掘市场需求，对于目前的市场而言，品质优良，性能优越，低成本，具有差异化的有源晶振产品才是最佳之选，为了能够满足用户的需求，Raltron公司不断挑战自我的极限，并通过自身的刻苦，精心打磨出来品质过硬，低成本，性能出色的产品。

Founded in Miami, Fl. in 1983, Raltron Electronics Corporation has grown to become one of the most recognized and experienced manufacturers of frequency management products in the world. From simple tuning fork crystals to high stability oven-controlled crystal oscillators, Raltron offers the most comprehensive line of frequency management devices in the industry.

The company’s commitment to research and development has allowed the continuous creation of leading edge crystal and oscillators devices and technologies over many years. Today, Raltron provides high performance frequency control solutions that meet and exceed customer expectations in terms of price, quality, application and customer support.

成立于佛罗里达州迈阿密。1983年，Raltron电子公司发展成为世界上最受认可和最有经验的频率管理产品制造商之一。从简单的音叉晶体到高稳定性的恒温晶体振荡器，Raltron提供业界最全面的频率管理设备系列。
该公司致力于研究和开发，多年来不断创造出领先的晶体和有源晶体振荡器设备和技术。今天，Raltron提供高性能频率控制解决方案，在价格、质量、应用和客户支持方面满足并超越客户的期望。

To satisfy the demands of the fast-growing wireless applications markets Raltron has also positioned itself as a complete solution supplier, adding SAW devices and LTCC filters to its crystals and oscillators offering. The company has also developed a complete product range of antennas for the same markets.Raltron is supporting its worldwide customers through a global network of independent Sales Representatives as well as several subsidiary offices in Asia, strategically located close to key customers and markets. The company’s products are distributed by several large global Distributors, by prominent high-service distributors as well as Regional Distributors addressing specific marketplaces.
Raltron is developing and manufacturing precision oscillators in its Miami, Fl. facility while simple crystal resonators, clock oscillators and filters as well as antennas are produced in several facilities located in Asia. The company is shipping the products worldwide from its Hong Kong based logistics hub.All Raltron employees are committed to a continuing pursuit of quality and excellence. This philosophy has kept Raltron in a leadership position through years of uninterrupted growth.
In depth technical support from the first steps of the customer’s product development process and continuing throughout the customer’s product life cycle is assured by two applications engineering teams based in Florida and in Asia. Both locations are also featuring Failure Analysis labs equipped with modern test equipment allowing the company to respond in real time to customers’solicitations.

为了满足快速增长的无线应用市场的需求，Raltron也对自己进行了定位，作为一个完整的解决方案供应商，在其晶体和振荡器中添加SAW器件和LTCC滤波器提供。该公司还为相同的市场开发了完整的天线产品系列。Raltron通过独立销售的全球网络为其全球客户提供支持在亚洲的代表和几个子公司，战略位置靠近关键客户和市场。该公司的产品由几家大型全球经销商分销，由突出的高服务分销商以及针对特定市场的区域分销商。美国Raltron拉隆公司简介.

Raltron正在佛罗里达州迈阿密开发和制造精密振荡器。简易水晶谐振器、石英晶体振荡器和滤波器以及天线都在位于亚洲。该公司从其位于香港的物流中心向世界各地运送产品。所有Raltron员工都致力于不断追求质量和卓越。这种哲学使Raltron在多年的持续增长中保持领先地位。从客户产品开发流程的第一步开始提供深入的技术支持两个应用工程团队确保在客户的整个产品生命周期中持续运行总部设在佛罗里达和亚洲。这两个地方都有故障分析实验室配备现代测试设备，使公司能够实时响应客户的需求招标。

耐高温石英晶体SAW21209F4A-32.768K非常适合汽车和6G设备应用

Sunstu松图晶振SAW212，是一款小体积晶振尺寸2.0x1.2mm 陶瓷SMD超小型包装，2垫脚汽车手表晶体，两脚贴片晶振，频率为32.768K晶振，无源晶振，晶体谐振器，无铅环保晶振，±10ppm公差可用的，提供6pF、7pF、9pF和12.5pF负载电容，高可靠性的汽车，可用的宽温度范围-55℃至125℃，具有超小型，轻薄型，耐热、耐振、耐冲击等优良的耐环境特性，满足无铅焊接的高温回流温度曲线要求，符合AEC-Q200标准。2012小型晶振特别适用于汽车电子设备，娱乐系统，汽车导航，ECU子时钟等应用。