INTEGRATED CIRCUIT BASED AC COUPLING TOPOLOGY

A coupling system in an integrated circuit to block DC components from an amplifier without large costly external coupling capacitors. An input receives an input signal which has a DC component. A first impedance element receives the input signal and blocks the DC component while a second impedance element connects between the output of the first impedance matching element and a ground node. The second impedance element and the first impedance element form a voltage divider network. The first and second impedance element are integrated elements. The amplifier receives the input signal after the DC component is blocked. The first impedance element and the second impedance element may comprise a resistor in series with a capacitor. In a differential pair configuration, an impedance matchingelement interconnects between a first path and a second path to impedance match the amplifier to a data source. 一种集成电路中的耦合系统，用于阻隔放大器中的直流成分，而无需高成本的外部耦合电容器。输入接收具有直流分量的输入信号。第一阻抗元件接收输入信号并阻隔DC分量，而第二阻抗元件连接在第一阻抗匹配元件的输出与接地节点之间。第二阻抗元件