Patent ID: 8174318

Claim:
An apparatus comprising: a transconductance amplifier having an inverted input and a non-inverted input configured to receive a differential input voltage signal and having an inverted output and a non-inverted output configured to generate a differential output current signal at least partly in response to the differential input voltage signal; a linearizer configured to remove non-linearity in the differential output current signal such that the differential output current signal is substantially linear when the differential input voltage signal is within a range, wherein the linearizer includes a non-inverted input electrically coupled to the non-inverted input of the transconductance amplifier and a non-inverted output electrically coupled to the inverted output of the transconductance amplifier, and wherein the linearizer further includes an inverted input electrically coupled to the inverted input of the transconductance amplifier and an inverted output electrically coupled to the non-inverted output of the transconductance amplifier; and a current booster configured to add a current to the differential output current signal such that the differential output current signal remains substantially linear when the differential input voltage signal is outside the range.