Patent ID: 9722818
Date: 2017-08-01
CPC Classifications: H04L

Claim:
1. A summation circuit, comprising: a first current source including at least one first input for receiving a signal based on an input data signal and at least one second input for receiving at least a first feedback signal with a first weighting value; and a second current source having at least one third input for receiving the signal based on the input data signal, at least one fourth input for receiving an offset calibration signal that is provided by an RC circuit coupled to an output of the summation circuit, and at least one fifth input for receiving at least a second feedback signal with a second weighting value, wherein the RC circuit includes a resistor and a capacitor each directly coupled to the fourth input, wherein the summation circuit is configured to output at least one output signal based on the input data signal and the first and second feedback signals, and wherein the second weighting value is an updated version of the first weighting value until the at least one output signal converges to a pre-defined signal level.