Patent ID: 8729928

Claim:
A switching circuit suitable for a low power oscillator circuit, the switching circuit comprising; a control circuit and an output circuit, said control circuit arranged to control the output circuit; said control circuit having an input terminal and an output terminal, said output circuit having an input terminal, an output terminal and a plurality of control terminals; wherein the input terminal of the control circuit is connected to the input terminal of the output circuit, and the control terminal of the output circuit is connected to the output terminal of the control circuit; said output circuit comprising a first plurality of switches connected in series and arranged such that in use at least one of said first plurality of switches is in a low impedance state at any moment in time, and said control circuit comprising a second plurality of switches connected in series and arranged such that in use at least one of said first plurality of switches is in a low impedance state at any moment in time; and wherein the output circuit further comprises a plurality of control switches connected in series with the first plurality of switches, wherein said control switches are arranged to control operation of the first plurality of switches.