深圳康比电子有限公司

Oscilent晶振产品应用领域278-52.0M-0925GW-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晶振厂家由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。

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。

RENESAS瑞萨推出第一代32位RISC-V CPU内核

MTI-milliren为坚固的军用或商用频率参考GPSDO振荡器

全球定位系统纪律振荡器(GPSDO)可作为坚固的军用或商用频率参考，允许铯原子钟或Stratum I性能在固定或移动平台上运行。GPSDO石英晶体振荡器产生高度精确的频率(24小时后通常< 5E-12 ),相位噪声性能非常低。采用16-34V电源时，整个组件在+25°C时的功耗低于8W。提供每秒一个脉冲(1PPS)的输出。此外，GPSDO提供了不到9分钟的快速预热。+25°c时的精度为1E-08，接收机提供低至-160dBm的GPS信号跟踪。RS-232可用于通信、控制和状态报告，以及TTL内置测试(BIT)状态输出。有多种选项可用于提供定制的高性能下一代GPS训练频率参考。

MTI-milliren石英晶体振荡器老化性能研究

石英晶体振荡器的超长时间老化性能研究

摘要
将提供长达1900天的延长老化测试结果，以深入了解石英晶体振荡器的长期漂移特性。将对结果进行讨论，以显示环境条件和功率开关循环变化的影响。

1.介绍 

对几种类型的石英晶体振荡器进行了非常长时间尺度的老化测量，包括AT和SC切割烘箱控制晶体振荡器（OCXO）以及温度补偿晶体振荡器（TCXO）。）尽管每个OCXO在生产中都会老化，但通常只在满足老化率规范所需的时间段内收集数据。由于确定真正的老化性能需要很长的测试时间，TCXOs很少老化。通常无法获得大组振荡器长期老化性能的研究结果。

Renesas采用RA8D1 MCUs的图形和视觉AI应用

en="" sans",="" helvetica,="" arial,="" "lucida="" grande",="" "nimbus="" sans="" l",="" sans-serif;="" font-size:="" 16px;="" "="" style="margin-top: 0px; margin-bottom: 1.5rem; box-sizing: border-box; outline-color: inherit; outline-offset: 2px; color: rgb(56, 56, 56);">视觉人工智能（即计算机视觉）是指允许系统感知和解释视觉数据并根据对这些数据的分析做出自主决策的技术。这些系统通常具有用于获取视觉数据的相机传感器，该视觉数据作为输入激活提供给在大型图像数据集上训练的神经网络以识别图像。视觉人工智能可以支持许多应用，例如用于故障检测的工业机器视觉、自动驾驶汽车、安全应用中的人脸识别、图像分类、对象检测和跟踪、医疗成像、交通管理、路况监控、客户热图生成等。

如何增加电机控制系统的价值

en="" sans",="" helvetica,="" arial,="" "lucida="" grande",="" "nimbus="" sans="" l",="" sans-serif;="" font-size:="" 16px;="" "="" style="margin-top: 0px; margin-bottom: 1.5rem; box-sizing: border-box; outline-color: inherit; outline-offset: 2px; color: rgb(56, 56, 56);">如今，电机控制系统要求更高的性能、更低的功耗和更多的功能，包括智能操作。除了精确的电机控制之外，系统还需要能够同时执行应用程序、与其它设备通信以及检测运行异常。此外，这些系统需要安全设计以及网络连接的安全措施。

en="" sans",="" helvetica,="" arial,="" "lucida="" grande",="" "nimbus="" sans="" l",="" sans-serif;="" font-size:="" 16px;="" "="" style="margin-top: 0px; margin-bottom: 1.5rem; box-sizing: border-box; outline-color: inherit; outline-offset: 2px; color: rgb(56, 56, 56);">为了帮助设计人员满足这些要求，瑞萨开发了32位RA微控制器系列中用于电机控制的RA8T1系列MCU。石英晶振RA8T1设备采用最新的高端皮质?-M级内核，支持精确的电机控制，有助于提高整体系统能效。除了性能之外，RA8T1还提供了丰富的优化功能，使设计人员能够在其系统中采用额外的功能。将优化的电机控制产品线扩展到满足低端到高端电机系统需求的产品阵容，不仅可以实现设计可扩展性，还可以利用通用开发工具和软件。

Wenzel的COTS频率控制和时序元件的优势

COTS频率控制和时序元件的优势:

●验证和测试-许多COTS组件都经过了严格的测试和验证，以用于各种行业的预期应用，这可以用于空间应用，从而节省时间和资源。我们将在下面更详细地探讨认证和资格标准。

RZ/V2H微处理器兼具视觉人工智能和实时控制功能，集成了瑞萨新一代专有人工智能加速器——AI3动态可重构处理器（DRP），提供10 TOPS/W的功效。该公司表示，这是“与以前的型号相比令人印象深刻的10倍改进。”

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。