Back to results
US 6,747,506 B1Granted
Charge pump architecture
AssigneeIntel Corporation
InventorRaman S. Thiara
Life of this patent
Estimating the term…
Abstract
According to some embodiments, a charge pump includes a first transistor to steer an amount of current to a second transistor coupled to the first transistor in a first folded cascode arrangement and to a current mirror to sink substantially the amount of current from a load, and a third transistor to steer the amount of current to a fourth transistor coupled to the third transistor in a second folded cascode arrangement to source substantially the amount of current to the load.
Claims10
A charge pump comprising:
- a first transistor of a first type, a gate of the first transistor to receive a first component of a first differential charge pump control signal;
- a second transistor of a second type, a source of the second transistor coupled to a drain of the first transistor, and a drain of the second transistor coupled to an output node;
- a third transistor of the first type, a gate of the third transistor to receive a first component of a second differential charge pump control signal;
- a fourth transistor of the second type, a source of the fourth transistor coupled to a drain of the third transistor;
- and
- a current mirror, an input of the current mirror coupled to a drain of the fourth transistor and an output of the current mirror coupled to the output node,
- wherein, in response to receipt of the first component of the first differential charge pump control signal in a first state, the first transistor is to steer an amount of current through the second transistor to source substantially the amount of current to the output node, and
- wherein, in response to receipt of the first component of the second differential charge pump control signal in the first state, the third transistor is to steer the amount of current through the fourth transistor to the input of the current mirror to sink the amount of current from the output node.
5 more elements
A system comprising:
- a transceiver comprising a charge pump, the charge pump comprising:
- a first transistor of a first type, a gate of the first transistor to receive a first component of a first differential charge pump control signal;
- a second transistor of a second type, a source of the second transistor coupled to a drain of the first transistor, and a drain of the second transistor coupled to an output node;
- a third transistor of the first type, a gate of the third transistor to receive a first component of a second differential charge pump control signal;
- a fourth transistor of the second type, a source of the fourth transistor coupled to a drain of the third transistor;
- and
- a current mirror, an input of the current mirror coupled to a drain of the fourth transistor and an output of the current mirror coupled to the output node,
- wherein, in response to receipt of the first component of the first differential charge pump control signal in a first state, the first transistor is to steer an amount of current through the second transistor to source substantially the amount of current to the output node, and
- wherein, in response to receipt of the first component of the second differential charge pump control signal in the first state, the third transistor is to steer the amount of current through the fourth transistor to the input of the current mirror to sink the amount of current from the output node;
- and
- an optical interface coupled to the transceiver to receive and to transmit optical signals.
8 more elements
Dependencies are inferred from the claim text.