Patent ID: 7719380
Filing Date: 2010-05-18
Classification: H04B

Abstract:
1. An AC coupling circuit comprising: a first differential input; a second differential input; a first resistor having a first terminal and a second terminal, said first terminal directly connected to said first differential input and said second terminal directly connected to said second differential input; a first capacitor having a first terminal and a second terminal, the first capacitor first terminal connected to said first differential input and the first capacitor second terminal connected to a first differential output; a second capacitor having a first terminal and a second terminal, the second capacitor first terminal connected to said second differential input and the second capacitor second terminal connected to a second differential output; a second resistor having a first terminal and a second terminal, the second resistor first terminal connected to said first differential output and the second resistor second terminal connected to a node; a third resistor having a first terminal and a second terminal, the third resistor first terminal connected to said second differential output and the third resistor second terminal connected to said node; and a first potential applied to said node.