SIT8208AC-83-25E-27.000000X

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Oscillators

Oscillators are electronic circuits that generate recurring electric signals, such as sine waves. These signals are essential for providing synchronizing reference voltages or frequencies used to control electronic equipment such as mobile phones, radios and computers. Oscillators are the critical components used in digital electronics, and are extensively used for frequency synthesis, signal regeneration, radio transmitters and receivers, and television transmitters and receivers.

SIT8208AC-83-25E-27.000000X is an oscillator. It is a Voltage-Controlled Crystal Oscillator (VCXO). This VCXO consists of a quartz crystal resonator, a voltage-controlled varicap diode, and a Darlington pair transistor. The external control voltage is used to vary the capacitance of the varicap diode, which changes the resonance frequency of the quartz crystal. This enables the oscillator to be tuned externally.

In its application field, SIT8208AC-83-25E-27.000000X is mainly used in radio receivers. Its features include frequency range of 26.000 to 27.000000 MHz, with external voltage control for frequency tuning and 10mA max current consumption. Its tuning sensitivity is 10mV/MHz, with low phase noise, and tight stability over temperature and voltage.

The working principle of SIT8208AC-83-25E-27.000000X is based on the principle of the quartz crystal. The active part of the circuit is a quartz crystal and a pair of Darlington transistors connected in an oscillator configuration. Two electrodes are connected to the crystal and when the voltage at the electrodes is varied, the frequency of oscillations changes. The quartz crystal in the oscillator has a microcontroller that can measure the frequency of oscillations, compensate for any variations in voltage, and provide feedback to maintain a constant frequency. The frequency of oscillations is also controlled by an external voltage which is applied to the varicap diode. By varying this voltage, the capacitance of the diode changes, which results in changes in the frequency of oscillations.

SIT8208AC-83-25E-27.000000X oscillator is an excellent choice for radio receivers. It has excellent frequency range, tight stability over temperature and voltage, low phase noise, and 10mV/MHz tuning sensitivity. It is an ideal choice for applications that require precision frequency control with high precision.

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