Maxlinear, Inc.

Joseph Palackal Mathew

Prasun Kali Bhattacharyya

A digital signal processing circuit comprises a first equalizer circuit and a second equalizer circuit. An output of the second equalizer is used as feedback to generate an equalized signal. The output of the second equalizer circuit is based on a plurality of postcursor values and a plurality of precursor values, where the precursor values are generated based on an output of the first DFE circuit, and the postcursor values are generated independently of the output of the first DFE.

Predictive decision feedback equalizer

Methods and systems for continuous gain control in a feedback transimpedance amplifier (TIA) may include: in a TIA including a gain stage, a feedback resistance for the gain stage, a current sense resistor, and a feedback current control circuit: receiving an input current at an input of the gain stage: directing a current through the current sense resistor to the feedback current control circuit, and generating an output voltage proportional to the input current and a gain of the TIA. The gain may be configured by providing a proportion (&#x3b1;) of the current through the feedback current control circuit to the input of the gain stage. The proportion &#x3b1; of the current from the feedback current control circuit to the input of the gain stage may be configured by applying a differential voltage to control terminals of a transistor pair in the feedback current control circuit.

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Carlsbad, CA, United States of America

Joseph Palackal Mathew