Logic device with reduced leakage current

A logic device with reduced leakage current, comprising:

• an array of logic devices;
• a switch connected between each supply terminal and each virtual supply terminal of said logic devices for sourcing/sinking current to/from said logic devices;
• and
• voltage controlled constriction devices connected between said supply terminals and said virtual supply terminals, said voltage controlled constriction devices being biased to reduce the leakage current in an area efficient manner;
• wherein said constriction devices are biased from diodes/diode connected transistors connected between said supply terminals and gates of said constriction devices, and a temperature tracking mechanism connected between said diodes/diode connected transistors.

A logic device with reduced leakage current, comprising:

• an array of logic devices;
• a switch connected between each supply terminal and each virtual supply terminal of said logic devices for sourcing/sinking current to said logic devices;
• voltage controlled constriction devices connected between said supply terminals and said virtual supply terminals;
• said voltage controlled constriction devices being biased from:
• diodes/diode connected transistors connected between said supply terminals and gates of said constriction devices;
• and
• a temperature tracking mechanism connected between said diodes/diode connected transistors, to thereby reducing the leakage current in an area efficient manner.

An integrated circuit, comprising:

• logic circuitry coupled to a virtual ground;
• a ground constriction circuit coupled between the virtual ground and a ground reference, the ground constriction circuit including a first transistor source/drain coupled between the virtual ground and ground reference and having a gate terminal coupled to receive a first control signal that changes an amount of current sourced by the first transistor;
• and
• a tracking circuit comprised of same logic circuitry and operable to track leakage current of that same logic circuitry and generate the first control signal to change the amount of current sourced by the first transistor so as to maintain a substantially steady voltage across the logic circuitry.

An integrated circuit, comprising:

• logic circuitry coupled between a virtual ground and a virtual supply;
• a ground constriction circuit coupled between the virtual ground and a ground reference, the ground constriction circuit including a first transistor source/drain coupled between the virtual ground and ground reference and having a gate terminal coupled to receive a first control signal that changes an amount of current sourced by the first transistor;
• a supply constriction circuit coupled between the virtual supply and a supply reference, the supply constriction circuit including a second transistor source/drain coupled between the virtual supply and supply reference and having a gate terminal coupled to receive a second control signal that changes an amount of current sourced by the second transistor;
• and
• a tracking circuit comprised of same logic circuitry and operable to track leakage current of that same logic circuitry and generate the first and second control signals to change the amount of current sourced by the first and second transistors so as to maintain a substantially steady voltage across the logic circuitry.