公开(公告)号：US09564855B2

公开(公告)日：2017-02-07

申请号：US14618899

申请日：2015-02-10

Applicant: Analog Devices Global

Inventor： Gerard Mora-Puchalt

IPC: H03F1/02 ,  H03F3/45 ,  H03F1/30

CPC classification number: H03F3/2175 ,  H03F1/0205 ,  H03F1/303 ,  H03F3/2171 ,  H03F3/303 ,  H03F3/45179 ,  H03F3/45219 ,  H03F3/45748 ,  H03F3/45775 ,  H03F2200/231 ,  H03F2200/297 ,  H03F2203/45112 ,  H03F2203/45116 ,  H03F2203/45292 ,  H03F2203/45454 ,  H03M1/12

Abstract: Adaptive biasing circuits for input differential pairs of a buffer or an amplifier adapt to autozero currents for discrete pair selection or continuous pair selection. The adaptive biasing circuits include a multistage device including current source and follower devices with a plurality of switches for a two-phase operation: autozero and amplifying phases. During an autozero phase, input differential pairs are isolated from subsequent stages and biasing currents are determined for autozeroing of input offset voltages. During an amplifying phase, both input differential pairs can be coupled to subsequent stages for continuous selection or a selected input differential pair can be coupled to subsequent stages for discrete selection.

Abstract translation: 用于缓冲器或放大器的输入差分对的自适应偏置电路适用于用于离散对选择或连续对选择的自动电流。 自适应偏置电路包括包括具有用于两相操作的多个开关的电流源和从动装置的多级装置：自动调零和放大阶段。 在自动调零阶段，输入差分对与后续阶段隔离，偏置电流被确定为输入偏移电压的自动调零。 在放大阶段期间，两个输入差分对可以耦合到后续级以用于连续选择，或者所选择的输入差分对可耦合到后续级用于离散选择。

公开(公告)号：US20160233833A1

公开(公告)日：2016-08-11

申请号：US14618899

申请日：2015-02-10

Applicant: Analog Devices Global

Inventor： Gerard Mora-Puchalt

IPC: H03F1/02 ,  H03F3/45

CPC classification number: H03F3/2175 ,  H03F1/0205 ,  H03F1/303 ,  H03F3/2171 ,  H03F3/303 ,  H03F3/45179 ,  H03F3/45219 ,  H03F3/45748 ,  H03F3/45775 ,  H03F2200/231 ,  H03F2200/297 ,  H03F2203/45112 ,  H03F2203/45116 ,  H03F2203/45292 ,  H03F2203/45454 ,  H03M1/12

Abstract: Adaptive biasing circuits for input differential pairs of a buffer or an amplifier adapt to autozero currents for discrete pair selection or continuous pair selection. The adaptive biasing circuits include a multistage device including current source and follower devices with a plurality of switches for a two-phase operation: autozero and amplifying phases. During an autozero phase, input differential pairs are isolated from subsequent stages and biasing currents are determined for autozeroing of input offset voltages. During an amplifying phase, both input differential pairs can be coupled to subsequent stages for continuous selection or a selected input differential pair can be coupled to subsequent stages for discrete selection.

Abstract translation: 用于缓冲器或放大器的输入差分对的自适应偏置电路适用于用于离散对选择或连续对选择的自动电流。 自适应偏置电路包括包括具有用于两相操作的多个开关的电流源和从动装置的多级装置：自动调零和放大阶段。 在自动调零阶段，输入差分对与后续阶段隔离，偏置电流被确定为输入偏移电压的自动调零。 在放大阶段期间，两个输入差分对可以耦合到后续级以用于连续选择，或者所选择的输入差分对可耦合到后续级用于离散选择。