Patent ID: 9496963
Filing Date: 2016-11-15
CPC Classification: H04B,H04L

Claim Text:
1. A current-mode driver with built-in continuous-time linear equalization (CTLE) for a transmitter, comprising: a digital current source operable to use a data signal to produce a main current signal; a filtering circuit comprising a resistor and a capacitor, the filtering circuit operable to receive a negative data signal and produce a filtered data signal, wherein the filtering circuit is tuned to produce a zero at a pole frequency in the filtered data signal that compensates for signal degradation caused by an optical transmitter; and an analog current source coupled in parallel to the digital current source, wherein the analog current source is operable to generate a subtraction current signal proportional to the filtered data signal, the subtraction current signal combined with the main current signal are operable to drive the transmitter.