Patent ID: 7616057
Filing Date: 2009-11-10
Classification: H03F

Abstract:
1. A differential transimpedance amplifier circuit comprising: a first operational amplifier having a first inverting input, a first non-inverting input, a first inverting output and a first non-inverting output; a second operational amplifier having a second inverting input, a second non-inverting input, a second inverting output and a second non-inverting output, wherein the second inverting output communicates directly with the first non-inverting input and the second non-inverting output communicates directly with the first inverting input; a first feedback element that communicates with the first non-inverting input and the first inverting output; a second feedback element that communicates with the first inverting input and the first non-inverting output; a third feedback element that communicates with the second inverting input and the first inverting output; and a fourth feedback element that communicates with the second non-inverting input and the first non-inverting output.