Apparatus and method for frequency quintupling
First Claim
1. A circuit comprising:
- a first TSCP (tri-stage charge pump) configured to receive a first phase and a third phase of a five-phase clock and output a first current to an output node;
a second TSCP configured to receive a second phase and a fourth phase of the five-phase clock and output a second current to the output node;
a third TSCP configured to receive a third phase and a fifth phase of the five-phase clock and output a third current to the output node;
a fourth TSCP configured to receive a fourth phase and the first phase of the five-phase clock and output a fourth current to the output node;
a fifth TSCP configured to receive a fifth phase and the second phase of the five-phase clock and output a fifth current to the output node; and
a load configured to terminate the output node.
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Accused Products
Abstract
A circuit includes a first TSCP (tri-stage charge pump), a second TSCP, a third TSCP, a fourth TSCP, a fifth TSCP, and a load. The first TSCP receives a first phase and a third phase of a five-phase clock and outputs a first current to an output node. The second TSCP receives a second phase and a fourth phase of the five-phase clock and outputs a second current to the output node. The third TSCP receives a third phase and a fifth phase of the five-phase clock and outputs a third current to the output node. The fourth TSCP receives a fourth phase and the first phase of the five-phase clock and outputs a fourth current to the output node. The fifth TSCP receives a fifth phase and the second phase of the five-phase clock and outputs a fifth current to the output node. The load terminates the output node.
30 Citations
14 Claims
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1. A circuit comprising:
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a first TSCP (tri-stage charge pump) configured to receive a first phase and a third phase of a five-phase clock and output a first current to an output node; a second TSCP configured to receive a second phase and a fourth phase of the five-phase clock and output a second current to the output node; a third TSCP configured to receive a third phase and a fifth phase of the five-phase clock and output a third current to the output node; a fourth TSCP configured to receive a fourth phase and the first phase of the five-phase clock and output a fourth current to the output node; a fifth TSCP configured to receive a fifth phase and the second phase of the five-phase clock and output a fifth current to the output node; and a load configured to terminate the output node. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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receiving a five-phase clock including a first phase, a second phase, a third phase, a fourth phase, and a fifth phase; using a first tri-state charge pump (TSCP) to output a first current to an output node in accordance with the first phase and the third phase of the five-phase clock; using a second TSCP to output a second current to the output node in accordance with the second phase and the fourth phase of the five-phase clock; using a third TSCP to output a third current to the output node in accordance with the third phase and the fifth phase of the five-phase clock; using a fourth TSCP to output a fourth current to the output node in accordance with the fourth phase and the first phase of the five-phase clock; using a fifth TSCP to output a fifth current to the output node in accordance with the fifth phase and the second phase of the five-phase clock; and terminating the output node with a load. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification