公开(公告)号：US09628028B2

公开(公告)日：2017-04-18

申请号：US14746124

申请日：2015-06-22

申请人： STMICROELECTRONICS S.R.L.

发明人： Francesco Carrara ,  Felice Alberto Torrisi ,  Francesco Clerici

IPC分类号： H03F3/45 ,  H03F1/08 ,  H03F1/02

CPC分类号： H03F1/086 ,  H03F1/0205 ,  H03F1/083 ,  H03F3/45085 ,  H03F3/45179 ,  H03F3/45502 ,  H03F3/45511 ,  H03F2200/456 ,  H03F2203/45008 ,  H03F2203/45116 ,  H03F2203/45288 ,  H03F2203/45418 ,  H03F2203/45424 ,  H03F2203/45431

摘要： A common-mode feedback circuit includes a transconductor input stage with differential input terminals, and a frequency-compensated gain stage coupled to the transconductor input stage with differential output terminals. The common-mode feedback circuit also includes a feedback loop having a comparator configured to produce a feedback error signal for the transconductor input stage by comparing with a reference a common-mode sensing signal indicative of a common-mode voltage level sensed at the differential output terminals. In addition, the common-mode feedback loop includes a converter for converting the common-mode voltage level sensed at said differential output terminals into a current signal coupled to the comparator.

公开(公告)号：US10135399B2

公开(公告)日：2018-11-20

申请号：US15442423

申请日：2017-02-24

申请人： STMicroelectronics S.r.l.

发明人： Francesco Carrara ,  Felice Alberto Torrisi ,  Francesco Clerici

IPC分类号： H03F3/45 ,  H03F1/08 ,  H03F1/02

摘要： A common-mode feedback circuit includes a transconductor input stage with differential input terminals, and a frequency-compensated gain stage coupled to the transconductor input stage with differential output terminals. The common-mode feedback circuit also includes a feedback loop having a comparator configured to produce a feedback error signal for the transconductor input stage by comparing with a reference a common-mode sensing signal indicative of a common-mode voltage level sensed at the differential output terminals. In addition, the common-mode feedback loop includes a converter for converting the common-mode voltage level sensed at said differential output terminals into a current signal coupled to the comparator.

公开(公告)号：US20170163222A1

公开(公告)日：2017-06-08

申请号：US15442423

申请日：2017-02-24

申请人： STMicroelectronics S.r.l.

发明人： Francesco Carrara ,  Felice Alberto Torrisi ,  Francesco Clerici

IPC分类号： H03F1/08 ,  H03F3/45

CPC分类号： H03F1/086 ,  H03F1/0205 ,  H03F1/083 ,  H03F3/45085 ,  H03F3/45179 ,  H03F3/45502 ,  H03F3/45511 ,  H03F2200/456 ,  H03F2203/45008 ,  H03F2203/45116 ,  H03F2203/45288 ,  H03F2203/45418 ,  H03F2203/45424 ,  H03F2203/45431

摘要： A common-mode feedback circuit includes a transconductor input stage with differential input terminals, and a frequency-compensated gain stage coupled to the transconductor input stage with differential output terminals. The common-mode feedback circuit also includes a feedback loop having a comparator configured to produce a feedback error signal for the transconductor input stage by comparing with a reference a common-mode sensing signal indicative of a common-mode voltage level sensed at the differential output terminals. In addition, the common-mode feedback loop includes a converter for converting the common-mode voltage level sensed at said differential output terminals into a current signal coupled to the comparator.