Patent ID: 6930534
Filing Date: 2005-08-16
Classification: H03K

Abstract:
1. A ring oscillator integrated circuit comprising: an odd number of inverter stages coupled in a ring configuration, each of said inverter stages comprising: first, second, third, fourth, fifth and sixth transistor devices; wherein said first, second, fourth and fifth transistor devices are coupled in series via their source and drain terminals; wherein gate terminals of said first, second, fourth and fifth transistor devices are coupled together; wherein said third and sixth transistor devices are coupled in series between said source of said second transistor device and said drain of said fourth transistor device; wherein gate terminals of said third and sixth transistor devices are coupled together; wherein said gate and drain terminals of said third transistor device are coupled to said drain terminal of said second transistor device; and wherein a common coupling of gate terminals of said first, second, fourth and fifth transistor devices form an input terminal for said inverter stage.