Patent ID: 8102206
Filing Date: 2012-01-24
Classification: H03F

Abstract:
1. An operational amplifier arranged in a feedback configuration, the operational amplifier comprising: a plurality of amplifiers connected between input and output terminals of the operational amplifier to form a plurality of at least partially different amplification paths extending from the input terminal to the output terminal, each of the amplification paths including a respective subset of the plurality of amplifiers configured in series and having a respective first-in-order amplifier and a respective last-in-order amplifier, wherein the first-in-order amplifier of at least a first and a second of the amplification paths is a same first common amplifier, and the first-in-order amplifier of at least a third of the amplification paths is different than the first common amplifier, and wherein the last-in-order amplifier of the first and second amplification paths is a second common amplifier.