Patent ID: 8786363

Claim:
An amplifier comprising: a signal amplification block configured to receive a differential input voltage signal and to amplify the differential input voltage signal to generate an output signal; and a feed-forward offset correction block configured to receive the differential input voltage signal and to generate an input offset correction signal, wherein the feed-forward offset correction block comprises: a first feed-forward amplification circuit configured to amplify the differential input voltage signal to generate a feed-forward signal; a feed-forward chopping circuit configured to chop the feed-forward signal at a chopping frequency to generate a chopped feed-forward signal; and a notch filter configured to attenuate the chopped feed-forward signal at the chopping frequency to generate a notched signal, wherein the feed-forward offset correction block is configured to generate the input offset correction signal based at least partly on the notched signal, and wherein the signal amplification block is further configured to receive the input offset correction signal from the feed-forward offset correction block and to reduce an input offset voltage of the amplifier using the input offset correction signal.