Configurable equalizing stage with embedded variable gain
AssigneeMarvell Asia Pte Ltd
InventorsZushu Yan, Dadian Zhou, Manisha Gambhir, Ahmed Mostafa
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Abstract
An equalizing circuit for a multi-stage analog front end may include an equalizing portion and a variable gain portion. The equalizing portion includes at least one controllable impedance element to apply a configurable, frequency-dependent peaking response to an input signal. The variable gain portion is coupled to the equalizing portion, and the variable gain portion applies an overall gain to the input signal. The overall gain is independent from the peaking response of the equalizing portion.
Claims28
An equalizing circuit with integrated variable gain, the equalizing circuit comprising:
- an equalizing portion comprising at least one controllable impedance element to apply a configurable, frequency-dependent peaking response to an input signal;
- and
- a variable gain portion coupled to the equalizing portion, the variable gain portion to apply an overall gain to the input signal, wherein the overall gain is independent from the peaking response of the equalizing portion.
An equalizing circuit with integrated variable gain, the equalizing circuit comprising:
- an equalizing portion comprising at least one controllable impedance element, wherein the equalizing portion is configured to apply a configurable, frequency-dependent peaking response to an input signal;
- a variable gain portion coupled to the equalizing portion, the variable gain portion configured to apply an overall gain to the input signal, wherein the overall gain is independent from the peaking response of the equalizing portion;
- and
- an inductive network configured to decouple the equalizing portion from the variable gain portion of the equalizing circuit.
An analog front-end (AFE) comprising a plurality of stages, wherein one of the stages comprises:
- an equalizing circuit comprising at least one controllable impedance element to apply a configurable, frequency-dependent peaking response to an input signal;
- and
- a variable gain amplifier (VGA) embedded in the equalizing circuit, the VGA to apply an overall gain to the input signal, wherein the overall gain is independent from the peaking response.
An equalizing circuit with integrated variable gain, the equalizing circuit comprising:
- means for applying a peaking response to an input signal, wherein the peaking response is configurable;
- and
- means for applying an overall gain to the input signal, wherein the overall gain is independent from the peaking response.
Dependencies are inferred from the claim text.