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This voltage-controlled oscillator (VCO) is a high-frequency electronic circuit that generates an output signal whose frequency varies in relation to a control voltage.

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Explore the world of signal generation with this voltage-controlled oscillator (VCO) from Onsemi. A VCO is an electronic circuit that can produce a continuous output signal at a frequency that can be controlled by an applied voltage. This allows for precise adjustments to the output frequency, making VCOs essential components in various applications such as:

  • Frequency modulation (FM) synthesis: VCOs are fundamental building blocks in FM synthesizers, which are used to generate radio waves for FM radio broadcasting and other wireless communication applications.
  • Voltage-controlled filters: When combined with voltage-controlled filters (VCFs), VCOs can create tunable electronic sound effects, making them popular components in synthesizers and other audio equipment.
  • Phase-locked loops (PLLs): VCOs play a crucial role in phase-locked loops (PLLs), which are circuits used for frequency synchronization, signal multiplication, and demodulation.

Key features of voltage-controlled oscillators (VCOs):

  • Output frequency varies in relation to a control voltage
  • Wide range of frequency outputs (depending on the specific VCO)
  • Used in various electronic applications such as FM synthesis, voltage-controlled filters, and phase-locked loops


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