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US 2026/0205068 A1Published application
System and methods for efficient common mode suppression for transmission systems
AssigneeAvago Technologies International Sales Pte. Limited
InventorsMd Shakil Akter, Jan Mulder, Han Yan
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Abstract
In some aspects, the disclosure is directed to methods and systems for an amplifier having common mode feedback inputs. The inputs are coupled to various points within an amplifier wherein a first set of directly coupled common mode feedback inputs join the amplifier one or more nodes, and a second set of capacitively coupled common mode feedback inputs are joined to the amplifier at one or more different nodes.
Claims20
A device, comprising:
- a first amplifier, comprising:
- a first input port configured to receive a differential input signal,
- a second input port configured to receive a common mode reference, and
- a first output configured to deliver an amplified signal to a second amplifier;
- the second amplifier, further comprising a second output to further amplify the amplified signal;
- and
- circuity to provide, as feedback, the further amplified signal to an input coupled between the output of the second amplifier and the first amplifier.
4 more elements
A device, comprising:
- a first amplifier, comprising:
- a first input port configured to receive a differential input signal,
- a second input port configured to receive a common mode reference, and
- a first output configured to deliver an amplified signal to a second amplifier;
- and
- the second amplifier, further comprising a second output to further amplify the amplified signal:
- a first current source;
- and
- circuity to provide, as feedback, the further amplified signal to the first current source.
6 more elements
A system comprising:
- a first amplifier, comprising:
- a first input port configured to receive a differential input signal,
- a second input port configured to receive a common mode reference, and
- a first output configured to deliver an amplified signal to a second amplifier;
- the second amplifier, further comprising a second output to further amplify the amplified signal;
- and
- circuity to provide, as feedback, the further amplified signal via a plurality of communications paths, the plurality of communications paths comprising a first communications path to provide first spectral content and a second communications path to provide second spectral content exceeding a frequency of the first spectral content.
4 more elements
Dependencies are inferred from the claim text.