SIT8920AM-31-33N-40.000000Y

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Oscillators

SIT8920AM-31-33N-40.000000Y is a kind of oscillator that operates in the frequency range from 0.360MHz to 40MHz. It has wide application fields such as battery charging, cell phone, cordless phone and other wireless communication systems. Moreover, it has the features of low power consumption, high noise immunity, low jitter, and low phase noise. So it is especially suitable for digital systems with low noise requirements.

Application Field

The lower frequency range of this oscillator is especially suitable for mobile phone, cordless phone, and other wireless communication systems. It can also meet the low noise requirements of digital systems. Moreover, it is perfectly applicable to battery charging circuits, medical systems and other consumer application systems.

Working Principle

When SIT8920AM-31-33N-40.000000Y is powered on, a crystal oscillator will start to oscillate at its operating frequency. A High-Speed Digital Integrator (HSDI) monitors the output signal of the crystal oscillator. The signal will be compared with an internal reference frequency. The difference will be used to calibrate the frequency. The temperature of the oscillator will also be monitored and compensated when it is necessary, thus ensuring the frequency stability in an extended temperature range.

At the same time, the oscillator stabilizes the output current. When the output current increases, the HSDC will reduce the output voltage. This ensures the linearity of the oscillator. At the output stage, the oscillator has a power amplifier. It can amplify the output voltage and current for direct driving digital loads.

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