公开(公告)号：US11068228B2

公开(公告)日：2021-07-20

申请号：US16833346

申请日：2020-03-27

Applicant: QUALCOMM Incorporated

Inventor： Khaled Mahmoud Abdelfattah Aly ,  David Ta-hsiang Lin

IPC: H04R5/04 ,  G06F3/16 ,  H04R1/10 ,  G10K11/16 ,  H03F3/20

Abstract: An audio codec system includes an audio driver path coupled to a first node of the audio codec system. A first terminal of a sense resistor external to the audio codec system is coupled to the first node and a second terminal of the sense resistor is coupled to an auxiliary device load. The audio codec system includes a second path having a first bias circuit, a second bias circuit and an off-chip voltage reference. The first bias circuit is coupled to a second node of the audio codec system. The second bias circuit is coupled to a third node of the audio codec system. The off-chip voltage reference is associated with the auxiliary device load coupled between the first bias circuit and the second bias circuit.

公开(公告)号：US11546004B2

公开(公告)日：2023-01-03

申请号：US17211769

申请日：2021-03-24

Applicant: QUALCOMM Incorporated

Inventor： Meysam Azin ,  Li Lu ,  Anees Habib ,  Chinmaya Mishra ,  Damin Cao ,  Arul Balasubramaniyan ,  David Ta-hsiang Lin ,  Shuang Zhu ,  Dinesh Jagannath Alladi

IPC: H04B1/04 ,  H03M3/00 ,  H03M1/46

Abstract: Aspects of the disclosure relate to an apparatus for wireless communication. The apparatus may include a set of power detectors configured to generate a set of analog signals related to a set of output signal power levels of a set of transmit chains of a transmitter, respectively; an analog summer; a set of switching devices configured to send a selected one or more of the set of analog signals to the analog summer, and substantially isolated unselected one or more of the set of power detectors from the analog summer, wherein the analog summer is configured to generate a cumulative analog signal based on a sum of the selected one or more of the set of analog signals; an analog-to-digital converter (ADC) configured to generate a digital signal based on the cumulative analog signal; and a controller configured to control the set of switching devices.