公开(公告)号：US20230087897A1

公开(公告)日：2023-03-23

申请号：US17483142

申请日：2021-09-23

Applicant: QUALCOMM Incorporated

Inventor： Shih-Wei CHOU ,  Todd Morgan RASMUS ,  Ying DUAN ,  Abhay DIXIT

IPC: H04L12/40 ,  H03F3/19 ,  H04B1/16 ,  H04L29/08

Abstract: A receiving apparatus includes a terminating network for a three-wire serial bus and a feedback circuit. Each wire of the three-wire serial bus may be coupled through a resistance to a common node of the terminating network. The feedback circuit has a first amplifier circuit having an input coupled to the common node, a comparator that receives an output of the first amplifier circuit as a first input and a reference voltage as a second input, and a second amplifier circuit responsive to an output of the comparator and configured to inject a current through the common node.

公开(公告)号：US20230143127A1

公开(公告)日：2023-05-11

申请号：US17453967

申请日：2021-11-08

Applicant: QUALCOMM Incorporated

Inventor： Todd Morgan RASMUS ,  Shih-Wei CHOU

IPC: H03F3/45 ,  H03F1/02

CPC classification number: H03F3/45183 ,  H03F1/0227 ,  H03F2200/453 ,  H03F2200/456 ,  H03F2200/555 ,  H03F2200/91 ,  H03F2203/45008

Abstract: Aspects of the present disclosure provide a method for regulating an integration current of a sensing amplifier. The sensing amplifier includes a first input transistor and a second input transistor, wherein a source of the first input transistor and a source of the second input transistor are coupled to a source node. The method includes pulling a current from or sourcing the current to the source node, measuring the integration current, comparing the measured integration current with a reference signal, and adjusting the current pulled from or sourced to the source node based on the comparison.

公开(公告)号：US20200183440A1

公开(公告)日：2020-06-11

申请号：US16211178

申请日：2018-12-05

Applicant: QUALCOMM Incorporated

Inventor： Todd Morgan RASMUS

IPC: G05F3/30 ,  G05F1/575 ,  G01R35/00

Abstract: Aspects of the disclosure are directed to generating a reference voltage with trim adjustment. Accordingly, a reference voltage with trim adjustment is generating which involves generating a trim current using at least one of a plurality of selectable parallel elements; inputting the trim current to parallel resistor branches to generate a first scaled voltage; and combining a first voltage with the first scaled voltage to generate the reference voltage.