彼得曼32.768KHZ晶振系列，彼得曼作为行业顶尖的供应商，一直以来走向技术的最前沿，同时，彼得曼技术公司努力为每一种产品和服务提供最高的质量、安全性、灵活性和客户满意度。作为一个充满活力的市场环境中的创新者，我们致力于成为客户可靠的战略合作伙伴。凭借我们广泛的产品和服务、不折不扣的质量和卓越的性价比，我们支持他们开发具有竞争力的高效应用。

PETERMANN-TECHNIK提供最广泛的32.768kHz解决方案组合，包括石英晶体和硅振荡器以及RTC，推荐用于要求低成本、高性能、高质量产品的所有应用。

32.768kHz石英晶体可在-40/+85°C的标准温度范围内以10至20ppm的频率容差在25°C下交付，根据AECQ200或AECQ100的汽车解决方案可应要求提供。

32.768kHz微型贴片硅振荡器推荐用于电池驱动解决方案，如蓝牙低功耗、物联网、可穿戴设备、RTCs、移动通信、智能计量、智能住宅、商业、医疗和工业应用等。2.0x1.2mm外壳允许使用相同的焊盘布局尺寸直接替换2012系列的石英晶体。

SMD硅32.768kHz振荡器具有独特的超低功耗特性，功耗小于1.0 A，频率容差非常小，从5ppm到10ppm，温度稳定性优于石英晶体和32.768kHz石英晶体振荡器，可提供高精度32.768kHz时钟，功耗极低，价格低廉。

标准外壳尺寸为1.5x0.8mm毫米或2.0x1.2mm毫米，视型号而定。与石英晶体不同，ULPO和ULPPO系列能够通过LVCMOS兼容输出信号为多个IC(MCU、RTC、ble等)提供时钟。)同时，增加了更大的元件放置灵活性，并消除了外部负载电容，从而节省了额外的元件数量、电路板空间和成本(PCB、组装、搬运、库存等)。).例如，与使用32.768kHz石英晶体相比，在BLE解决方案中使用ULPO或ULPO可节省约60%的系统能源。

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32，768 kHz下16 ppm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。

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，32，768kHz晶振的最大频率稳定性为+40/-220ppm(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32.768K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。彼得曼32.768KHZ晶振系列.

为了满足高度精确的时间要求，作为计时专家，我们推出了ULPPO系列超低功耗32.768K有源晶振。该振荡器可以在1.5到3.63 VDC的VDD范围内的每个电压下工作。额定功耗为0.99 A。在-40/+85°c的温度范围内，ULPPOs的温度稳定性为±5 ppm。频率稳定性(输送精度加上温度稳定性)为10 ppm，20年后的老化为±2ppm。因此，ULPPOs的最大总稳定性为12ppm，包括10年后的老化。这些是行业最佳参数。

超小型外壳的电路不需要外部电路电容(外壳面积:1.2mm2).ULPPO中安装的IC输入级独立过滤电源电压。与晶体相比，ULPPOs节省了印刷电路板上的大量空间，因此可以增加封装密度，并且可以设计更小的印刷电路板。幅度的调整进一步降低了ULPPO的功耗。

	Product Name	Package	Product Category	Dimensions in mm (W x D x H)	Frequency Range
	M1610 (AVAILABLE IN STOCK)	SMD Ceramic/2pad	kHz Crystal	1.6 x 1.0 x 0.45 mm	32.768 kHz
	M2012 (AVAILABLE IN STOCK)	SMD Ceramic/2pad	kHz Crystal	2.0 x 1.2 x 0.55 mm	32.768 kHz
	M3215 (AVAILABLE IN STOCK)	SMD Ceramic/2pad	kHz Crystal	3.2 x 1.5 x 0.75 mm	32.768 kHz
	M3215HT (High Temp. -40/+125°C)	SMD Ceramic/2pad	kHz Crystal	3.2 x 1.5 x 0.75 mm	32.768 kHz
	M3215RR (50 kΩ - low power design)	SMD Ceramic/2pad	kHz Crystal	3.2 x 1.5 x 0.75 mm	32.768 kHz
	M3215A (AEC-Q200)	SMD Ceramic/2pad	kHz Crystal	3.2 x 1.5 x 0.75 mm	32.768 kHz

	Product Name	Package	Dimensions in mm (W x D x H)	Frequency Range	Supply Voltage	Output Signal
	SPXO	SMD Ceramic/4pad	2.5 x 2.0 x 1.0 mm	32.768 kHz	VDC	HCMOS/CMOS
	SPXO	SMD Ceramic/4pad	3.2 x 2.5 x 1.2 mm	32.768 kHz	VDC	HCMOS/CMOS

硅振荡器超低功率32.768千赫

	Product Name	Package	Dimensions in mm (W x D x H)	Frequency Range
	ULPO-RB1	SMD QFN/4pad	1.5 x 0.8	32.768 kHz
	ULPO-RB2	SMD QFN/4pad	2.0 x 1.2	32.768 kHz

对于空间计算，还必须考虑印刷电路板上晶体的两个外部电路电容。由于有两个外部电路电容，即使最小的32，768kHz晶振也比ULPPOs需要更多的PCB空间。

此外，非常小的32，768kHz晶体具有非常高的电阻，这通常不能被要同步的振荡器级安全地克服，因为要同步的IC或RTC的振荡器级也具有非常高的容差。因此，现场可能会出现突然的响应时间问题，这可以通过ULPPOs排除。因此，在任何情况下，使用ULPPOs都可以安全运行应用程序。

振荡器级消耗大量能量来保持32，768晶体振荡。通常，MCU的输入级可以直接与ULPPO的LVCMOS信号(通常为X在).因此，可以停用MCU的输入级(旁路功能)，以便节省的能量可以用于计算电表的系统功耗。此外，ULPPOs能够同时同步多个IC。由于ULPPO的精度非常高，因此需要的时间同步更少，这也节省了系统功率。

当然，ULPPOs可用于任何需要小型化超低功耗32，768 kHz振荡器的应用，如智能手机、平板电脑、GPS、健身手表、健康和保健应用、无线键盘、计时系统、计时应用、可穿戴设备、物联网、家庭自动化等。由于32，768kHz有源晶体振荡器的高度准确性，待机时间或甚至超高技术应用中的超高时间可以显著增加，从而由于显著降低的电池密集型同步周期可以节省大量系统功率。因此，与32，768kHz晶体相比，32，768kHz振荡器是更好的选择。超低功耗32，768kHz振荡器具有不同的精度变化——也可参见ULPO-RB1和-RB2系列。

我们经验丰富的专家可以迅速为这一高度创新的组件的集成设计提供尽可能最好的具体支持。

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.

Our highly experienced specialists can quickly provide the best possible specific support for the integration design of this highly innovative component.