Patent ID: 8599055

Claim:
A digital-to-analog converter comprising at least one cell, the at least one cell having: a first coupling capacitor with a second terminal connected to an output; a first inverter connected between a bias voltage and ground, wherein gates of the first inverter are connected to a data input and a first common point is connected to a first terminal of the first coupling capacitor; a second inverter connected between the bias voltage and ground, wherein the gates of the second inverter are connected to an inverted data input and a second common point is connected to a first terminal of a second coupling capacitor; a differential output connected to a second side of the first coupling capacitor and a second side of the second coupling capacitor, wherein the differential output of at least one of the cells comprises a third capacitor connected between the second side of the first coupling capacitor and ground; a fourth capacitor connected between the second side of the second coupling capacitor and RF ground; and an inductor connected between the second side of the first coupling capacitor and the second side of the second coupling capacitor and having a RF ground tap.