公开(公告)号：US11063567B2

公开(公告)日：2021-07-13

申请号：US16582733

申请日：2019-09-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Niko Bako ,  Christian Gehle

IPC: H03B1/00 ,  H03K3/00 ,  H03G3/30 ,  H03F3/68 ,  H03F3/45

Abstract: An input circuit includes an input stage having an input node and a direct-current (DC) amplifier coupled to the input node. The input circuit also includes an alternating-current (AC) amplifier coupled to an output node of the DC amplifier. The input circuit also includes a capacitor coupled between the input node and the output node of the DC amplifier. The input circuit also includes a voltage divider coupled to the DC amplifier and the AC amplifier. The voltage divider includes first resistor associated with the DC amplifier and a second resistor associated with the AC amplifier, where the first resistor is larger than the second resistor.