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1.发明申请公开(公告)号：US20130235487A1
公开(公告)日：2013-09-12
申请号：US13674308
申请日：2012-11-12
Applicant: LSI CORPORATION
Inventor： Brad A. Natzke , Cameron C. Rabe , Hong Jiang , Andrew P. Krebs , Jason P. Brenden
CPC classification number: G11B5/6017 , G11B5/607 , G11B21/02 , G11B2005/0008 , G11B2005/0018 , H03F3/45071 , H03F3/4508 , H03F2203/45116 , H03F2203/45528
Abstract: Amplifier architectures are provided for current sensing applications. An amplifier includes a load device, an operational amplifier, a current source, and a bipolar transistor. The operational amplifier has a first input terminal connected to a first input node that receives an input current, and a second input terminal connected to a second input node that receives a reference voltage. The current source is connected to an output of the operational amplifier. The operational amplifier, the current source, and the bipolar transistor form a feedback loop that generates and maintains a bias voltage on the first input node based on the reference voltage applied to the second input node. The bipolar transistor amplifies the input current received on the first input node, and generates an amplified input current. The load device converts the amplified input current to an output voltage, wherein the output voltage is used to sense the input current.
Abstract translation: 为电流检测应用提供放大器架构。 放大器包括负载装置，运算放大器，电流源和双极晶体管。 运算放大器具有连接到接收输入电流的第一输入节点的第一输入端子和连接到接收参考电压的第二输入节点的第二输入端子。 电流源连接到运算放大器的输出端。 运算放大器，电流源和双极晶体管形成反馈回路，其基于施加到第二输入节点的参考电压产生并维持第一输入节点上的偏置电压。 双极晶体管放大在第一输入节点上接收的输入电流，并产生放大的输入电流。 负载装置将放大的输入电流转换为输出电压，其中输出电压用于感测输入电流。
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2.发明授权公开(公告)号：US09099137B2
公开(公告)日：2015-08-04
申请号：US14272603
申请日：2014-05-08
Applicant: LSI Corporation
Inventor： Brad A. Natzke , Cameron C. Rabe , Hong Jiang , Andrew P. Krebs , Jason P. Brenden
CPC classification number: G11B5/6017 , G11B5/607 , G11B21/02 , G11B2005/0008 , G11B2005/0018 , H03F3/45071 , H03F3/4508 , H03F2203/45116 , H03F2203/45528
Abstract: Amplifier architectures are provided for current sensing applications. An amplifier includes a load device, an operational amplifier, a current source, and a bipolar transistor. The operational amplifier has a first input terminal connected to a first input node that receives an input current, and a second input terminal connected to a second input node that receives a reference voltage. The current source is connected to an output of the operational amplifier. The operational amplifier, the current source, and the bipolar transistor form a feedback loop that generates and maintains a bias voltage on the first input node based on the reference voltage applied to the second input node. The bipolar transistor amplifies the input current received on the first input node, and generates an amplified input current. The load device converts the amplified input current to an output voltage, wherein the output voltage is used to sense the input current.
Abstract translation: 为电流检测应用提供放大器架构。 放大器包括负载装置，运算放大器，电流源和双极晶体管。 运算放大器具有连接到接收输入电流的第一输入节点的第一输入端子和连接到接收参考电压的第二输入节点的第二输入端子。 电流源连接到运算放大器的输出端。 运算放大器，电流源和双极晶体管形成反馈回路，其基于施加到第二输入节点的参考电压产生并维持第一输入节点上的偏置电压。 双极晶体管放大在第一输入节点上接收的输入电流，并产生放大的输入电流。 负载装置将放大的输入电流转换为输出电压，其中输出电压用于感测输入电流。
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3.发明申请公开(公告)号：US20140240870A1
公开(公告)日：2014-08-28
申请号：US14272603
申请日：2014-05-08
Applicant: LSI Corporation
Inventor： Brad A. Natzke , Cameron C. Rabe , Hong Jiang , Andrew P. Krebs , Jason P. Brenden
CPC classification number: G11B5/6017 , G11B5/607 , G11B21/02 , G11B2005/0008 , G11B2005/0018 , H03F3/45071 , H03F3/4508 , H03F2203/45116 , H03F2203/45528
Abstract: Amplifier architectures are provided for current sensing applications. An amplifier includes a load device, an operational amplifier, a current source, and a bipolar transistor. The operational amplifier has a first input terminal connected to a first input node that receives an input current, and a second input terminal connected to a second input node that receives a reference voltage. The current source is connected to an output of the operational amplifier. The operational amplifier, the current source, and the bipolar transistor form a feedback loop that generates and maintains a bias voltage on the first input node based on the reference voltage applied to the second input node. The bipolar transistor amplifies the input current received on the first input node, and generates an amplified input current. The load device converts the amplified input current to an output voltage, wherein the output voltage is used to sense the input current.
Abstract translation: 为电流检测应用提供放大器架构。 放大器包括负载装置，运算放大器，电流源和双极晶体管。 运算放大器具有连接到接收输入电流的第一输入节点的第一输入端子和连接到接收参考电压的第二输入节点的第二输入端子。 电流源连接到运算放大器的输出端。 运算放大器，电流源和双极晶体管形成反馈回路，其基于施加到第二输入节点的参考电压产生并维持第一输入节点上的偏置电压。 双极晶体管放大在第一输入节点上接收的输入电流，并产生放大的输入电流。 负载装置将放大的输入电流转换为输出电压，其中输出电压用于感测输入电流。
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4.发明授权公开(公告)号：US08760790B2
公开(公告)日：2014-06-24
申请号：US13674308
申请日：2012-11-12
Applicant: LSI Corporation
Inventor： Brad A. Natzke , Cameron C. Rabe , Hong Jiang , Andrew P. Krebs , Jason P. Brenden
IPC: G11B5/02
CPC classification number: G11B5/6017 , G11B5/607 , G11B21/02 , G11B2005/0008 , G11B2005/0018 , H03F3/45071 , H03F3/4508 , H03F2203/45116 , H03F2203/45528
Abstract: Amplifier architectures are provided for current sensing applications. An amplifier includes a load device, an operational amplifier, a current source, and a bipolar transistor. The operational amplifier has a first input terminal connected to a first input node that receives an input current, and a second input terminal connected to a second input node that receives a reference voltage. The current source is connected to an output of the operational amplifier. The operational amplifier, the current source, and the bipolar transistor form a feedback loop that generates and maintains a bias voltage on the first input node based on the reference voltage applied to the second input node. The bipolar transistor amplifies the input current received on the first input node, and generates an amplified input current. The load device converts the amplified input current to an output voltage, wherein the output voltage is used to sense the input current.
Abstract translation: 为电流检测应用提供放大器架构。 放大器包括负载装置，运算放大器，电流源和双极晶体管。 运算放大器具有连接到接收输入电流的第一输入节点的第一输入端子和连接到接收参考电压的第二输入节点的第二输入端子。 电流源连接到运算放大器的输出端。 运算放大器，电流源和双极晶体管形成反馈回路，其基于施加到第二输入节点的参考电压产生并维持第一输入节点上的偏置电压。 双极晶体管放大在第一输入节点上接收的输入电流，并产生放大的输入电流。 负载装置将放大的输入电流转换为输出电压，其中输出电压用于感测输入电流。
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