Ring Oscillator with odd number of CMOS Inverters
transient analysis 2Ghz oscillation
inverters symbol
FFT

Ring Oscillator with odd number of CMOS Inverters

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Description

this astable circuit, called ring oscillator, is widely used in PLLs or as clock signal in digital circuits. The oscillator consists of a chain of odd number of CMOS inverters that generate an oscillation with a period T equal to 2* N* tp, where N is the number of inverters, and tp is the propagation delay (2 because each inverter switches twice during one period). For a tp equal to 25ps and N=11 we get an oscillation frequency of about 2 GHz

  • Free
  • Intermediate
  • 21-30
  • LTspice
  • IV
  • No
  • transient analysis 2Ghz oscillation inverters symbol FFT

2 reviews for Ring Oscillator with odd number of CMOS Inverters

  1. cronea01 –

    Thank you kind sir this is VERY helpful for practicing my circuits!

  2. Hayder –

    Hello,
    how to make this circuit run between 3Ghz – 3.2Ghz,
    thanks

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