公开(公告)号：US20150084609A1

公开(公告)日：2015-03-26

申请号：US14492877

申请日：2014-09-22

Applicant: STMICROELECTRONICS INTERNATIONAL N.V.

Inventor： Alexandre Pons ,  Karel Napravnik

IPC: G05F1/575

CPC classification number: G05F1/575

Abstract: A circuit may include a differential amplifier and a feedback network. The feedback network may have a chain of resistance sets coupled in series, with a first end terminal coupled to an output terminal of the differential amplifier and a second end terminal coupled to a power reference terminal of the differential amplifier. Respective nodes may be coupled between successive ones of the resistance sets. A feedback terminal may be coupled to an inverting input terminal of the differential amplifier. A controller may control a set of switches to electrically couple a given node to the feedback terminal. A first resistance set of the chain adjacent the first end terminal may be two resistance subsets coupled in series, with an intermediate node coupled therebetween. A programmable current generator may have a current output coupled to the intermediate node and may produce a controlled current flowing at the current output terminal.

Abstract translation: 电路可以包括差分放大器和反馈网络。 反馈网络可以具有串联耦合的电阻组，其中第一端子耦合到差分放大器的输出端子，以及耦合到差分放大器的功率参考端子的第二端子端子。 相应的节点可以在连续的电阻集合中耦合。 反馈端子可以耦合到差分放大器的反相输入端子。 控制器可以控制一组开关以将给定节点电耦合到反馈端子。 邻近第一端子的链的第一电阻组可以是串联耦合的两个电阻子集，其间连接有中间节点。 可编程电流发生器可以具有耦合到中间节点的电流输出并且可以产生在当前输出端子处流动的受控电流。

公开(公告)号：US09317054B2

公开(公告)日：2016-04-19

申请号：US14492877

申请日：2014-09-22

Applicant: STMicroelectronics International N.V.

Inventor： Alexandre Pons ,  Karel Napravnik

IPC: G05F1/00 ,  G05F1/575

CPC classification number: G05F1/575

Abstract: A circuit may include a differential amplifier and a feedback network. The feedback network may have a chain of resistance sets coupled in series, with a first end terminal coupled to an output terminal of the differential amplifier and a second end terminal coupled to a power reference terminal of the differential amplifier. Respective nodes may be coupled between successive ones of the resistance sets. A feedback terminal may be coupled to an inverting input terminal of the differential amplifier. A controller may control a set of switches to electrically couple a given node to the feedback terminal. A first resistance set of the chain adjacent the first end terminal may be two resistance subsets coupled in series, with an intermediate node coupled therebetween. A programmable current generator may have a current output coupled to the intermediate node and may produce a controlled current flowing at the current output terminal.

Abstract translation: 电路可以包括差分放大器和反馈网络。 反馈网络可以具有串联耦合的电阻组，其中第一端子耦合到差分放大器的输出端子，以及耦合到差分放大器的功率参考端子的第二端子端子。 相应的节点可以在连续的电阻集合中耦合。 反馈端子可以耦合到差分放大器的反相输入端子。 控制器可以控制一组开关以将给定节点电耦合到反馈端子。 邻近第一端子的链的第一电阻组可以是串联耦合的两个电阻子集，其间连接有中间节点。 可编程电流发生器可以具有耦合到中间节点的电流输出并且可以产生在当前输出端子处流动的受控电流。