公开(公告)号：US12088324B2

公开(公告)日：2024-09-10

申请号：US17820975

申请日：2022-08-19

Applicant: Infineon Technologies AG

Inventor： Ahmed Abdelaal ,  John G. Kauffman ,  Maurits Ortmanns ,  Takashi Miki

IPC: H03M3/00

CPC classification number: H03M3/344 ,  H03M3/372 ,  H03M3/422 ,  H03M3/436 ,  H03M3/464

Abstract: In accordance with an embodiment, a delta-sigma modulator includes: an analog loop filter comprising an outer portion and an inner portion having an input coupled to the outer portion; a quantizer coupled to an output of the inner portion of the analog loop filter; an outer feedback path coupled between an output of the quantizer and an input to the outer portion of the analog loop filter; and a compensation filter coupled between an output of the quantizer and an input of the inner portion of the analog loop filter. The compensation filter has a transfer function configured to correct for an effect of excess loop delay (ELD) on the delta-sigma modulator.

公开(公告)号：US20240063812A1

公开(公告)日：2024-02-22

申请号：US17820975

申请日：2022-08-19

Applicant: Infineon Technologies AG

Inventor： Ahmed Abdelaal ,  John G. Kauffman ,  Maurits Ortmanns ,  Takashi Miki

IPC: H03M3/00

CPC classification number: H03M3/344 ,  H03M3/372 ,  H03M3/422 ,  H03M3/464 ,  H03M3/436

Abstract: In accordance with an embodiment, a delta-sigma modulator includes: an analog loop filter comprising an outer portion and an inner portion having an input coupled to the outer portion; a quantizer coupled to an output of the inner portion of the analog loop filter; an outer feedback path coupled between an output of the quantizer and an input to the outer portion of the analog loop filter; and a compensation filter coupled between an output of the quantizer and an input of the inner portion of the analog loop filter. The compensation filter has a transfer function configured to correct for an effect of excess loop delay (ELD) on the delta-sigma modulator.