公开(公告)号：US20240179465A1

公开(公告)日：2024-05-30

申请号：US18060279

申请日：2022-11-30

Applicant: QUALCOMM Incorporated

Inventor： Chienchung YANG ,  Khaled Mahmoud ABDELFATTAH ALY ,  Vijayakumar DHANASEKARAN

IPC: H04R5/04 ,  H03F1/32 ,  H03F3/185

CPC classification number: H04R5/04 ,  H03F1/3205 ,  H03F3/185 ,  H04R2420/07 ,  H04R2420/09

Abstract: A wireless device may include a plug that is shared by high speed data, analog audio signals, and power. Switches may be included on wires between the plug and the circuits that provide the high-speed data, analog audio signals and power to isolate those circuits from overvoltage conditions. Linearizer circuits may be included to provide gate driving signals to the switches, e.g., during transmission of analog audio signals. The linearizer circuits may include digital-to-analog converters to apply a gain factor to analog audio signals.

公开(公告)号：US20240178663A1

公开(公告)日：2024-05-30

申请号：US18070414

申请日：2022-11-28

Applicant: QUALCOMM Incorporated

Inventor： Kshitij YADAV ,  Vijayakumar DHANASEKARAN ,  Khaled Mahmoud ABDELFATTAH ALY ,  Ramkumar SIVAKUMAR ,  Dongyang TANG ,  Chienchung YANG

IPC: H02H9/04

CPC classification number: H02H9/046

Abstract: An ESD trigger circuit is provided for protecting a pass transistor coupled to an integrated circuit terminal. The integrated circuit terminal couples through a diode to a voltage node. In response to an electrostatic shock at the integrated circuit terminal, the diode conducts charge to the voltage node to pulse a voltage of the voltage node. The ESD trigger circuit responds to the pulse of the voltage by coupling the voltage node to a gate of the pass transistor.