MP120A

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Crystals are of great importance to electronic circuit applications. As an essential part of electronic circuits, crystals can be used to form oscillators or LC-circuits to generate precise, stable and low-noise RF or Wireless signals. In this article, we will discuss the application field and working principle of the MP120A crystal unit.

The MP120A is a crystal unit better suited for general wireless communication applications. It includes a specially designed crystal with a frequency accuracy of +/-30ppm and a tightly matched oscillation circuit. This crystal unit is mainly used in the ultra-small Bluetooth modules, it is an ideal choice for designing ultra-low-power Bluetooth applications.

The working principle of the MP120A crystal unit is that under the effect of the reverse voltage, crystal oscillator will generate electrical oscillation. The MP120A crystal unit is mainly composed of a special stock cut quartz crystal, which is designed with a specific feedback resistance to control its operating temperature range and frequency center temperature at the same time. A specific operating temperature range and a precise center frequency is achieved by selecting the correct resonance, size and order of the quartz crystal.

The crystal of MP120A crystal unit has the following features:

• Temperature range: -20°C to 80°C;
• Frequency accuracy: +/-30ppm;
• No oscillation temperature shift: Less than 10ppm/°C;
• Low power consumption: 0.2mA;
• High frequency stability: +/-1ppm/year;
• State-of-the-art quality control: All crystals are inspected by computer and tested to meet an accuracy of -/+30ppm.

In a summary, MP120A crystal is an ideal choice for ultra-low-power Bluetooth applications, it features great temperature range, frequency accuracy and power consumption. It is also equipped with the state-of-the-art quality control measures in order to guarantee a precise result.

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