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US 2008/0164567 A1Published application
Band gap reference supply using nanotubes
AssigneeMotorola, Inc.
InventorsKing F. Lee, Barry W. Herold
Life of this patent
Estimating the term…
Abstract
A current and/or voltage band gap reference circuit includes a current mirror circuit having first, second and third current outputs, a first resistive element, and first and second nanotube transistors. The nanotube diameter of the first transistor is different to the nanotube diameter of the second transistor, allowing variable band-gaps to be achieved. A method for designing the circuit includes selection of the nanotube diameters.
Claims18
A band gap reference circuit comprising:
- a current mirror circuit having first, second and third current outputs;
- a first resistive element;
- a first transistor comprising a first nanotube and having a drain coupled to the first current output, a gate coupled to the drain and a source coupled to an electrical ground, and
- a second transistor comprising a second nanotube and having a drain coupled to the second current output, a source coupled to the electrical ground through the first resistive element and a gate coupled to the gate of the first transistor;
- wherein the diameter of the first nanotube is different to the diameter of the second nanotube and wherein the third current output provides a reference current.
2 more elements
A method for generating a design for a nanotube band gap current/voltage reference circuit:
- comprising:
- selecting a circuit topology comprising a plurality of nanotube transistors;
- selecting the nanotube diameters of a plurality of nanotube transistors;
- and
- outputting a design comprising the circuit topology and the nanotube diameters;
- wherein the nanotube diameter of a first nanotube transistor of the plurality of nanotube transistors is different to the nanotube diameter of a second nanotube transistor of the plurality of nanotube transistors.
3 more elements
Dependencies are inferred from the claim text.