Circuit for and method of receiving an input signal
AssigneeXilinx, Inc.
InventorsMohamed N. Elzeftawi, Hongtao Zhang
Life of this patent
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Abstract
A continuous time linear equalizer comprises an input of a first equalizer path configured to receive a first differential input signal; an input of a second equalizer path configured to receive a second differential input signal; a first programmable load capacitor coupled to an output of the first equalizer path; a second programmable load capacitor coupled to an output of the second equalizer path; and a programmable source capacitor coupled between the first equalizer path and the second equalizer path.
Claims20
A continuous time linear equalizer comprising:
- an input of a first equalizer path configured to receive a first signal of a differential input signal;
- an input of a second equalizer path configured to receive a second signal of a differential input signal;
- a first programmable load capacitor coupled to an output of the first equalizer path;
- a second programmable load capacitor coupled to an output of the second equalizer path;
- and
- a programmable source capacitor coupled between the first equalizer path and the second equalizer path.
A method of receiving an input signal, the method comprising:
- receiving a differential input signal;
- configuring a continuous time linear equalizer to receive a first signal of the differential input signal at a first equalizer input of a first equalizer path and a second signal of the differential input signal at a second equalizer input of a second equalizer path;
- programming a first programmable load capacitor coupled to a first equalizer path output of the continuous time linear equalizer and a second programmable load capacitor coupled to a second equalizer path output of the continuous time linear equalizer;
- and
- programming a programmable source capacitor coupled between the first equalizer path and the second equalizer path;
- providing a high frequency gain boost with a fixed DC gain;
- and
- coupling an output signal to first and second outputs of the continuous time linear equalizer.
Dependencies are inferred from the claim text.