Patent ID: 7529053

Claim:
An amplifier system with feedback current cancellation comprising: an amplifier with an input, an output, and at least one stage; a feedback network that includes a first resistance having one end that communicates with the input of the amplifier and an opposite end that communicates with the output of the amplifier; an operational amplifier (op-amp) having a non-inverting input, an inverting input, and an output, wherein the inverting input communicates with the input of the amplifier; a second resistance that has one end that communicates with the input of the amplifier and an opposite end that communicates with the output of the op-amp; a third resistance that has one end that communicates with the output of the op-amp and an opposite end that communicates with the non-inverting input of the op-amp; and a fourth resistance that has one end that communicates with the non-inverting input of the op-amp and an opposite end that communicates with the output of the amplifier.