冠杰商行

我们的AMJM/AMJD/AMPM/AMPD系列功率优化MEMS（微机电系统）可编程晶体振荡器专为紧凑型、便携式和电池供电应用而设计。MEMS器件的占用空间非常小，同时可生产出坚固且不受冲击和振动影响的精确时钟。这些振荡器非常适合需要高度耐用性的工业、商业和消费应用。这些器件可在出厂时配置为任何频率和可选的待机功能，当时钟信号未使用时，可实现12µA电流消耗以延长电池寿命。AMJD和AMPD系列贴片晶振提供频率选择引脚，允许在两个频率之间切换输出频率。

功率优化的MEMS振荡器AMPMAGD-18.0000T延长电池寿命并提高耐用性

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ABS07-120-32.768KHZ-T小封装的石英晶体很适合智能手机，The ABS07 series is the perfect solution for time management in RTC circuits. Our high-demand series of tuning fork crystals are low in power consumption preserving battery life in a wide range of applications.

The low frequency in small size SMD and 0.9mm height is ideal for high density circuit boards. The product's seam sealed ceramic package offers excellent environmental & heat resistance and is applicable for wide range in communication & measuring equipment. Other applications include commercial & Industrial applications, wireless communications, PDA, and Smartphone.

Feature

Low frequency in small size SMD

0.9mm height ideal for high density circuit boards

Seam sealed ceramic package offers excellent environmental & heat resistance

Extended Temperature -55°C to +125°C for industrial applications

Applications

Smart Wearables

Commercial & Industrial Applications

Wireless Communications

PDA & Smartphones

ABS07系列是RTC 电路中时间管理的完美解决方案。编码ABS07-120-32.768KHZ-T是 一款3215mm贴片型无源晶振，32.768KHZ晶振，我们高要求的音叉晶体系列功耗低，可在广泛的应用中保持电池寿命。

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编码ECS-3525-120-B-TR超小型SMD振荡器是高密度应用的理想选择，When the discussion of oscillators comes up, the same question will arise. What is the choice for performance in critical applications, MEMS (Micro-Electro-Mechanical Systems) or quartz-based oscillators? MEMS-based oscillators have been available on the market since 2005. In the last 15+ years, a handful of companies have developed MEMS-based oscillators. Today, only a few remain and the leading MEMS-based oscillator manufacturer accounts for around 1% of the total timing market. Many frequency control manufacturers private label from both companies, with the exception of ECS who does not see any value in the practice.

When selecting the oscillator for your electronic devices or communications equipment, some of the timing considerations you need to think about are: system performance, system clocking, signal quality and reference signal sources. These are the critical parameters that will decide the performance level of your product.

You may have seen another video from a MEMS manufacturer comparing MEMS oscillators to stand alone quartz crystals. It is proven that any oscillator be it quartz, SAW, ceramic, or MEMS will always outperform any standalone resonator. So, a comparison of an oscillator to a crystal is not a true test of the oscillator’s performance. In this side by side comparison, we will look at and directly compare a quartz-based oscillator with a MEMS oscillator.

当讨论振荡器时，会出现同样的问题。关键应用、MEMS（微机电系统）或石英晶体振荡器的性能选择是什么？自 2005 年以来，基于 MEMS 的振荡器已经上市。在过去 15 年多的时间里，少数公司开发了基于 MEMS 的振荡器。如今，只剩下少数几家，领先的基于 MEMS 的振荡器制造商约占整个时钟市场的 1%。两家公司的许多频率控制制造商都是自有品牌，但 ECS 除外，ECS 在实践中没有任何价值。

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为何这款无源晶振ABLS-LR-24.000MHZ-T能得到无线模块的青睐？There are four main sources of heat generation from inductor losses when operating in an application.
They can be categorized into two groups referred to as copper losses and core losses.
1. Copper losses – these are losses primarily due to the inherent DC resistance (DCR) of the inductor’s wire. The wire has a known DC resistance which is a function of the wire length and the cross-sectional area of the wire (aka gauge). The DCR parameter can be found in all the Abracon inductor’s datasheets.
The power dissipated from the effects of the DCR are:
There is, however, a frequency component to copper loss due to what is called the skin effect and
proximity effect. The skin effect is where the electrons traveling through a conductor’s magnetic field are forced towards the outside ‘skin’ of the wire. As frequency increases, the skin effect strengthens causing AC resistance to increase. 
The proximity effect further reduces current (increases resistance) due to magnetic fields of adjacent wires within the coil. Inductor coils with more turns and tightly packed windings will be affected greater by the proximity effect. Power dissipation from these AC effects is calculated by taking the RMS value of only the change in current seen by the inductor (sometimes called ripple current), squaring the RMS value and multiplying by the equivalent AC resistance.
AC resistance (ACR) is a difficult parameter to document due to its dependency on so many factors.
Abracon suggests that designers use an empirical method of measuring the copper loss from AC sources like the skin and proximity effects.
在应用中运行时，电感损耗产生的热量主要有四种来源。
它们可以分为两类，称为铜损失和芯损失。
1. 铜损耗——这些损耗主要是由于电感导线的固有直流电阻(DCR)造成的。导线有一个已知的直流电阻，它是导线长度和导线截面积的函数(又称量规)。而石英晶振低损耗恰好能够填补，DCR参数可以在所有Abracon电感器的数据表中找到。

从DCR的效果中耗散的能量是:

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电脑主板计时专用晶振FC-12M时钟晶振X1A000021000200

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