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US 7,924,208 B2Granted
Low power 10 Gigabit Ethernet interface
AssigneeKenet, Inc.
InventorsT.C.L. Gerhard Sollner, Michael P. Anthony
Life of this patent
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Abstract
A low-power communication interface, such as used with 10 Gigabit Ethernet, that uses an analog front end having a charge-domain analog-to-digital converter that uses a charge-domain pipeline.
Claims23
A network communication interface apparatus comprising:
- an analog front end, for coupling to a cable to receive a communication signal;
- a charge-domain pipeline analog to digital converter (ADC) comprising two or more Bucket Brigade Devices (BBD), and coupled to receive the communication signal at an input, and to provide a digital representation thereof at an output, and
- wherein the BBDs use boosted bucket-brigade charge transfer.
A network communication interface apparatus comprising:
- an analog front end, for coupling to a cable to receive a communication signal;
- a charge-domain pipeline analog to digital converter (ADC), coupled to receive the communication signal at an input, and to provide a digital representation thereof at an output;
- and
- wherein the charge-domain pipeline ADC further comprises:
- a first charge transfer circuit;
- a second charge transfer circuit;
- a node coupled to the first charge transfer circuit and the second charge transfer circuit;
- a capacitor coupled to the node and to a clocked voltage;
- a switched voltage coupled to the node;
- and
- at least one of the first or second charge transfer circuits being a boosted charge transfer circuit.
8 more elements
A network communication interface apparatus comprising:
- an analog front end, connected to receive a 10 Gigabit Ethernet compatible input signal;
- and
- a pipelined charge domain analog-to-digital converter using bucket brigade charge transfer, coupled to receive the input signal and further comprising:
- a first charge transfer circuit;
- a second charge transfer circuit;
- a node coupled to the first charge transfer circuit and the second charge transfer circuit;
- a first clocked capacitor coupled to the node and to a clocked voltage;
- a plurality of conditional charge capacitors coupled to the node and to conditional voltages, each of the plurality of conditional charge capacitors configured to provide conditional charge to the node.
5 more elements
Dependencies are inferred from the claim text.