公开(公告)号：US11811370B2

公开(公告)日：2023-11-07

申请号：US17502689

申请日：2021-10-15

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ramin Zanbaghi ,  Lingli Zhang ,  Wei Xu ,  Justin Richardson ,  John L. Melanson

IPC: H03F3/217 ,  G01R19/25

CPC classification number: H03F3/217 ,  G01R19/2506 ,  H03F2200/375

Abstract: A system for sensing an electrical quantity may include a sensing stage configured to sense the electrical quantity and generate a sense signal indicative of the electrical quantity, wherein the electrical quantity is indicative of an electrical signal generated by a Class-DG amplifier configured to drive a load wherein the Class-DG amplifier has multiple signal-level common modes and a common-mode compensator configured to compensate for changes to a common-mode voltage of a differential supply voltage of the driver occurring when switching between signal-level common modes of the Class-DG amplifier.

公开(公告)号：US11621683B2

公开(公告)日：2023-04-04

申请号：US17162229

申请日：2021-01-29

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Wei Xu ,  Ravi Kummaraguntla ,  Paul Wilson ,  Mujo Kozak ,  Christian Larsen ,  John L. Melanson ,  Yongjie Cheng

IPC: H03F3/45

Abstract: A system may include a front end differential amplifier having two input terminals, two input resistors, each of the two input resistors coupled to a respective one of the two input terminals, and an input common mode biasing circuit for an output stage of the front end differential amplifier, the input common mode biasing circuit comprising two current sources configured to generate currents for biasing the output stage of the front end differential amplifier.