High precision ring oscillator within +/-2% of the specified 22.1184M frequency in 0.18um EF ...

My circuit includes a voltage divider and potentiometer for adjusting that voltage, which controls the oscillator’s output frequency. The yellow Fluke digital meter is there to show the control ...

The present IP is a Ring Oscillator. Its output frequency is about 55 MHz. The frequency can be fairly accurate (+/-10%) by trimming the current. Its ...