公开(公告)号：US20230091543A1

公开(公告)日：2023-03-23

申请号：US17478032

申请日：2021-09-17

Applicant: Analog Devices International Unlimited Company

Inventor： Mayank Devam ,  Venkata Aruna Srikanth Nittala ,  Abhishek Bandyopadhyay

IPC: H03F3/45

Abstract: An amplifier circuit comprises a first amplifier circuit stage including input devices connected to inputs of the amplifier circuit, a second amplifier circuit stage coupled to the first amplifier stage, a common mode extraction circuit configured to extract a DC common mode voltage of the first amplifier stage, and a bias circuit configured to bias one or more output devices of the second amplifier circuit stage using the DC common mode voltage.

公开(公告)号：US11683018B2

公开(公告)日：2023-06-20

申请号：US17478032

申请日：2021-09-17

Applicant: Analog Devices International Unlimited Company

Inventor： Mayank Devam ,  Venkata Aruna Srikanth Nittala ,  Abhishek Bandyopadhyay

IPC: H03F3/45 ,  H03F3/26

CPC classification number: H03F3/4521

Abstract: An amplifier circuit comprises a first amplifier circuit stage including input devices connected to inputs of the amplifier circuit, a second amplifier circuit stage coupled to the first amplifier stage, a common mode extraction circuit configured to extract a DC common mode voltage of the first amplifier stage, and a bias circuit configured to bias one or more output devices of the second amplifier circuit stage using the DC common mode voltage.

公开(公告)号：US20240223146A1

公开(公告)日：2024-07-04

申请号：US18398638

申请日：2023-12-28

Applicant: Analog Devices International Unlimited Company

Inventor： Suhas V. Dixith ,  Mayank Devam ,  Daniel Peter Canniff ,  Rajeev S. Morajkar ,  Preston S. Birdsong

IPC: H03G3/30 ,  H03F3/45

CPC classification number: H03G3/30 ,  H03F3/45475 ,  H03G2201/103

Abstract: A programmable gain amplifier (PGA) circuit for adjusting a signal gain between a signal input and a signal output can include a differential-input amplifier which can include a first input node, a second input node, and a first output node, where the differential-input amplifier can be configured to amplify a difference in signal level between the first input node and the second input node for being provided on the first output node. The PGA circuit can also include a first configurable input impedance circuit, which can be arranged between a first signal input node and the first input node, which can be configured to provide a first specified input impedance value. The PGA circuit can also include a first configurable feedback impedance circuit, which can be arranged between a first signal output node and the first input node, which can be configured to provide a first specified feedback impedance value.