公开(公告)号：US20180331672A1

公开(公告)日：2018-11-15

申请号：US15978894

申请日：2018-05-14

Applicant: STMicroelectronics SA

Inventor： Renald Boulestin

IPC: H03H11/24 ,  H03F3/19 ,  H03G3/30 ,  H04B1/40

CPC classification number: H03H11/245 ,  H03F3/19 ,  H03F2200/451 ,  H03G1/0088 ,  H03G3/001 ,  H03G3/008 ,  H03G3/3036 ,  H03G2201/307 ,  H03H7/24 ,  H04B1/40

Abstract: An embodiment attenuator includes a plurality of circuits coupled in series. A respective circuit includes a first capacitor connected between an input node of the respective circuit and an output node of the respective circuit, and a second capacitor connected between the output node of the respective circuit and a reference node. The output node of the respective circuit, other than a last circuit of the plurality of circuits, is connected to the input node of a successive circuit. The attenuator further includes a plurality of selectors, in which the respective circuit is associated with a respective selector that is coupled between the output node of the respective circuit and an output node of the attenuator.

公开(公告)号：US20200177164A1

公开(公告)日：2020-06-04

申请号：US16780586

申请日：2020-02-03

Applicant: STMicroelectronics SA

Inventor： Renald Boulestin

IPC: H03H11/24 ,  H03G3/00 ,  H03H7/24 ,  H03G1/00 ,  H03G3/30 ,  H04B1/40 ,  H03F3/19

Abstract: An embodiment attenuator includes a plurality of circuits coupled in series. A respective circuit includes a first capacitor connected between an input node of the respective circuit and an output node of the respective circuit, and a second capacitor connected between the output node of the respective circuit and a reference node. The output node of the respective circuit, other than a last circuit of the plurality of circuits, is connected to the input node of a successive circuit. The attenuator further includes a plurality of selectors, in which the respective circuit is associated with a respective selector that is coupled between the output node of the respective circuit and an output node of the attenuator.

公开(公告)号：US20200076385A1

公开(公告)日：2020-03-05

申请号：US16545981

申请日：2019-08-20

Applicant: STMicroelectronics SA

Inventor： Renald Boulestin

IPC: H03F3/45 ,  H03G3/30 ,  H03F3/68 ,  H04B1/16 ,  H04B1/18 ,  H04W4/80

Abstract: A variable-gain amplifier includes two amplification and attenuation branches, and first and a second resistive elements that are coupled between the two branches. Each branch includes a voltage follower stage and a configurable amplification stage. The voltage follower stages are intended to receive a differential signal and are configured to deliver, via the first resistive element, an intermediate differential current signal. The amplification stages are intended to receive the intermediate differential current signal and a digital control word, and are configured to deliver, via the second resistive element, an output differential voltage signal depending on the value of the digital control word.

公开(公告)号：US10560071B2

公开(公告)日：2020-02-11

申请号：US15978894

申请日：2018-05-14

Applicant: STMicroelectronics SA

Inventor： Renald Boulestin

IPC: H03H11/24 ,  H03F3/19 ,  H04B1/40 ,  H03G3/30

Abstract: An embodiment attenuator includes a plurality of circuits coupled in series. A respective circuit includes a first capacitor connected between an input node of the respective circuit and an output node of the respective circuit, and a second capacitor connected between the output node of the respective circuit and a reference node. The output node of the respective circuit, other than a last circuit of the plurality of circuits, is connected to the input node of a successive circuit. The attenuator further includes a plurality of selectors, in which the respective circuit is associated with a respective selector that is coupled between the output node of the respective circuit and an output node of the attenuator.

公开(公告)号：US11128273B2

公开(公告)日：2021-09-21

申请号：US16545981

申请日：2019-08-20

Applicant: STMicroelectronics SA

Inventor： Renald Boulestin

IPC: H03F3/45 ,  H04W4/80 ,  H04B1/18 ,  H03G3/30 ,  H03F3/68 ,  H04B1/16

Abstract: A variable-gain amplifier includes two amplification and attenuation branches, and first and a second resistive elements that are coupled between the two branches. Each branch includes a voltage follower stage and a configurable amplification stage. The voltage follower stages are intended to receive a differential signal and are configured to deliver, via the first resistive element, an intermediate differential current signal. The amplification stages are intended to receive the intermediate differential current signal and a digital control word, and are configured to deliver, via the second resistive element, an output differential voltage signal depending on the value of the digital control word.