公开(公告)号：US09998138B1

公开(公告)日：2018-06-12

申请号：US15711021

申请日：2017-09-21

Applicant: QUALCOMM Incorporated

Inventor： Yan Wang ,  Chieh-Yu Hsieh ,  Ji Ma ,  Seyed Arash Mirhaj ,  Dinesh Jagannath Alladi

IPC: H03M1/38 ,  H03M1/46 ,  H03M1/12 ,  H03M1/80

CPC classification number: H03M1/462 ,  H03M1/12 ,  H03M1/1215 ,  H03M1/38 ,  H03M1/46 ,  H03M1/80 ,  H03M1/804

Abstract: Multi-channel receiver circuits implemented with time-multiplexed successive approximation register (SAR) analog-to-digital converter (ADC) circuits and methods for operating such receiver circuits are disclosed. One example receiver circuit generally includes a first multiplexer having a plurality of inputs coupled to a plurality of in-phase (I) receive paths associated with different channels of the receiver circuit, a first SAR ADC circuit having an input coupled to an output of the first multiplexer, a second multiplexer having a plurality of inputs coupled to a plurality of quadrature (Q) receive paths associated with the different channels of the receiver circuit, and a second SAR ADC circuit having an input coupled to an output of the second multiplexer.