MP111A-E

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Crystals play an important role in our daily lives since they can be used as oscillators in daily appliance such as clocks and watches as well as many electronic devices and scientific instruments. These are usually referred to as crystal oscillators and one such type is the MP111A-E. It is a quartz crystal resonator that can provide a stable and accurate frequency for applications such as low power systems and embedded designs.

The MP111A-E crystal oscillator is a module based on CdS (Cadmium Sulfide) technology. It is a miniature type of size 3.5 x 2.5 mm that conveniently occupies minimum board space. It is designed with a low power crystal mode to provide a low operating temperature of less than 70℃ with a low supply current of 0.3mA which makes the MP111A-E ideal for low power systems and applications. This oscillator has an extended frequency range of 4MHz to 40MHz, making it highly suitable for general purpose embedded applications such as GPS, Wi-Fi and Bluetooth applications.

The MP111A-E crystal oscillator has a simple circuit structure which includes a CdS crystal resonator, a dual-layer ceramic capacitor, and a resistor in a Land Grid Array (LGA) package. It is designed to offer high stability and accuracy over a wide operating temperature range of -40℃ to +85℃. The output frequency is determined by the crystal resonator which works by providing a repeated and consistent frequency by gradually building up to a peak amplitude and then collapsing on itself. The dual layer ceramic capacitor ensures a high Q factor for an accurate and stable frequency. The resistor ensures a stable loop gain to eliminate oscillation at the input stage.

The MP111A-E module is reliable and provides an excellent frequency stability of ±0.02% over an operating temperature range of -40℃ to +85℃. It also offers a fairly high frequency accuracy of ± 10 ppm. The high-Q design of the crystal resonator provides a dropout current of only 0.3mA for a maximum supply voltage of 3.3V. This makes it ideal for applications with limited power requirements.

In conclusion, the MP111A-E is a CdS crystal oscillator which provides a wider range of frequency from 4MHz to 40MHz within an extended operating temperature range of -40℃ to +85℃. It has a simple circuit structure consisting of a CdS crystal resonator, a dual-layer ceramic capacitor, and a resistor. It also provides excellent frequency stability of ±0.02% and a high frequency accuracy of ±10 ppm. Furthermore, it has a low power requirement of 0.3mA, making it suitable for low power systems and applications. This makes the MP111A-E an ideal choice for a range of embedded applications such as GPS, Wi-Fi and Bluetooth applications.

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