Patent ID: 8680930

Claim:
An oscillator, comprising: a first oscillator circuit, the first oscillator circuit including, a first starved inverter, a second starved inverter, an inner inverter of the second starved inverter being cross-coupled to an inner inverter of the first starved inverter, a first inverter, the first inverter having an input connected to an output of the inner inverter of the first starved inverter, and a second inverter, the second inverter having an input connected to an output of the inner inverter of the second starved inverter; and a second oscillator circuit, the second oscillator circuit including, a third starved inverter, the third starved inverter connected to an output of the first inverter, a fourth starved inverter, an inner inverter of the fourth starved inverter being cross-coupled to an inner inverter of the third starved inverter, the fourth starved inverter being connected to the second inverter; a third inverter, the third inverter having an input connected to an output of the inner inverter of the third starved inverter and having an output connected to the second starved inverter, and a fourth inverter, the fourth inverter having an input connected to an output of the inner inverter of the fourth starved inverter and having an output connected to the first starved inverter, wherein the first inverter is configured such that an output of the first inverter is supplied to an input of an outer inverter of the fourth starved inverter, and the second inverter is configured such that an output of the second inverter is supplied to an input of an outer inverter of the third starved inverter.