公开(公告)号：US20210091738A1

公开(公告)日：2021-03-25

申请号：US16582733

申请日：2019-09-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Niko BAKO ,  Christian GEHLE

IPC: H03G3/30 ,  H03F3/45 ,  H03F3/68

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.

公开(公告)号：US20190305738A1

公开(公告)日：2019-10-03

申请号：US15940812

申请日：2018-03-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Niko BAKO ,  Narayanan SEETHARAMAN

IPC: H03F3/45

Abstract: A circuit includes a first common mode amplifier including a first input, a second input, and a first output. The first common mode amplifier comprises a first plurality of self-based differential amplifiers. The circuit also includes a second common mode amplifier including a third input, a fourth input, and a second output, The third input is connected to the second input and the fourth input is connected to the first input. The second common amplifier comprises a second plurality of self-based differential amplifiers. The circuit further includes a first gain amplifier including a fifth input and a sixth input and a second gain amplifier including a seventh input and an eighth input. The first output is connected to the fifth and eight inputs and the second output is connected to the sixth and seventh inputs.