Programmable boosting and charge neutralization
AssigneeMarvell International Ltd.
InventorThart Fah Voo
Life of this patent
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Abstract
A programmable capacitance circuit including an input node; an output node; and a plurality of capacitance stages. Each of the capacitance stages is coupled to the input node and the output node, and wherein each capacitance stage is configured to be switched into a circuit path between the input node and the output node. Each of the capacitance stages includes a capacitor, and a control transistor having a gate capacitance in series with the capacitor, wherein the gate capacitance is configured to be added to the capacitance of the capacitor between the input node and the output node.
Claims25
A programmable capacitance circuit comprising:
- an input node;
- an output node;
- and
- at least one capacitance stage, wherein the at least one capacitance stage is coupled to the input node and the output node, and wherein the at least one capacitance stage is configured to be switched into a circuit path between the input node and the output node and wherein the at least one capacitance stage includes:
- a capacitor, and
- a control transistor having a gate capacitance and a gate node coupled to the input node, wherein the gate capacitance is configured to be added to a capacitance between the input node and the output node.
A programmable circuit comprising:
- an amplifier having a set of amplifier stages;
- and
- a programmable capacitance circuit having at least one capacitance stage coupled across at least one of the amplifier stages,
- wherein the at least one capacitance stage is configured to be switched into a circuit path across the at least one of the amplifier stages, and wherein the at least one capacitance stage includes a capacitor, and a control transistor having a gate capacitance and a gate node coupled to a first voltage node of the amplifier.
A programmable circuit method comprising:
- coupling a programmable capacitance circuit across first and second voltage nodes of a circuit, wherein the first and second voltage nodes have different voltages;
- and
- switching at least one capacitance stage of the programmable capacitance circuit into a circuit path across the first and second voltage nodes, wherein a capacitance of the at least one capacitance stage includes a gate capacitance of a transistor and a capacitance of a capacitor, and wherein the transistor includes a gate node coupled to one of the first or second voltage nodes.
Dependencies are inferred from the claim text.