公开(公告)号：US20080136522A1

公开(公告)日：2008-06-12

申请号：US12001053

申请日：2007-12-10

申请人： James Pearce Hamley

发明人： James Pearce Hamley

IPC分类号： H03F3/45

CPC分类号： H03F3/45286 ,  H03F3/4578 ,  H03F2203/45244 ,  H03F2203/45304 ,  H03F2203/45476 ,  H03F2203/45626 ,  H03F2203/45641 ,  H03F2203/45681

摘要： An amplifier includes a differential amplifier stage, a voltage amplification stage and a power output stage. The bias level of the output stage is proportional to current through the voltage amplification stage. The voltage amplification stage includes a current mirror whereby controlled current through a first leg of the current mirror controls current through the remaining, second leg, which, in turn, determines the bias level of the power output stage. Control circuitry senses a parameter of the amplifier, such as DC bias or input signal level to generate a control signal which is applied to the first leg of the current mirror to thereby control bias level of the power output stage.

摘要翻译： 放大器包括差分放大器级，电压放大级和功率输出级。 输出级的偏置电平与通过电压放大级的电流成比例。 电压放大级包括电流镜，由此通过电流镜的第一支腿的受控电流控制通过剩余的第二支路的电流，这进而确定功率输出级的偏置电平。 控制电路感测放大器的参数，例如DC偏置或输入信号电平，以产生施加到电流镜的第一支路的控制信号，从而控制功率输出级的偏置电平。

公开(公告)号：US07545216B2

公开(公告)日：2009-06-09

申请号：US12001053

申请日：2007-12-10

申请人： James Pearce Hamley

发明人： James Pearce Hamley

IPC分类号： H03F3/45

CPC分类号： H03F3/45286 ,  H03F3/4578 ,  H03F2203/45244 ,  H03F2203/45304 ,  H03F2203/45476 ,  H03F2203/45626 ,  H03F2203/45641 ,  H03F2203/45681

摘要： An amplifier includes a differential amplifier stage, a voltage amplification stage and a power output stage. The bias level of the output stage is proportional to current through the voltage amplification stage. The voltage amplification stage includes a current mirror whereby controlled current through a first leg of the current mirror controls current through the remaining, second leg, which, in turn, determines the bias level of the power output stage. Control circuitry senses a parameter of the amplifier, such as DC bias or input signal level to generate a control signal which is applied to the first leg of the current mirror to thereby control bias level of the power output stage.

摘要翻译： 放大器包括差分放大器级，电压放大级和功率输出级。 输出级的偏置电平与通过电压放大级的电流成比例。 电压放大级包括电流镜，由此通过电流镜的第一支腿的受控电流控制通过剩余的第二支路的电流，这进而确定功率输出级的偏置电平。 控制电路感测放大器的参数，例如DC偏置或输入信号电平，以产生施加到电流镜的第一支路的控制信号，从而控制功率输出级的偏置电平。

公开(公告)号：US07126413B2

公开(公告)日：2006-10-24

申请号：US10883577

申请日：2004-06-30

申请人： Pietro Filoramo ,  Giovanni Calì

发明人： Pietro Filoramo ,  Giovanni Calì

IPC分类号： G01R19/00 ,  H03F3/04 ,  H03F3/16

CPC分类号： H03F3/4578 ,  H03F1/3211 ,  H03F3/45282 ,  H03F2203/45244 ,  H03F2203/45466

摘要： A method and related circuit structure correlate the transconductance value of transistors of different type, for example MOS transistors and bipolar transistors. The structure comprises a first differential cell formed by transistors of the first type and a second differential cell formed by transistors of the second type connected to each other by means of a circuit portion responsible for calculating an error signal obtained as difference between the cell differential currents and applied to said first differential cell and to an output node of the same circuit structure obtaining a transconductance correlation independent from process tolerances and temperature.

摘要翻译： 一种方法和相关电路结构将不同类型的晶体管的跨导值相关联，例如MOS晶体管和双极晶体管。 该结构包括由第一类型的晶体管形成的第一差分单元和由第二类型的晶体管形成的第二差分单元，该第二差分单元通过负责计算获得的误差信号的电路部分相互连接，该误差信号作为单元差分电流 并施加到所述第一差分单元和相同电路结构的输出节点，获得独立于过程公差和温度的跨导相关性。

公开(公告)号：US20060164170A1

公开(公告)日：2006-07-27

申请号：US11313545

申请日：2005-12-20

申请人： A. Brokaw

发明人： A. Brokaw

IPC分类号： H03F3/16

CPC分类号： H03F3/45278 ,  H03F1/3211 ,  H03F1/34 ,  H03F1/52 ,  H03F3/343 ,  H03F3/3435 ,  H03F3/345 ,  H03F3/42 ,  H03F3/4578 ,  H03F3/50 ,  H03F2200/426 ,  H03F2200/45 ,  H03F2200/91 ,  H03F2203/45526 ,  H03F2203/45722

摘要： A small signal amplifier with a large signal output boost stage are connected between first and second supply rails. The small signal amplifier receives first and second input signals and provides an output signal at an output node which drives a load. Under small signal conditions, the output signal varies approximately linearly with the difference voltage. However, under large signal conditions, a rail-to-rail large signal output boost stage connected to the output node is arranged to drive the output node close to the first or second supply rail as needed to provide the current demanded by the load. The large signal output boost stage is off in small signal conditions, but comes on rapidly and transfers maximum charge to the load under large signal conditions.

摘要翻译： 具有大信号输出升压级的小信号放大器连接在第一和第二电源轨之间。 小信号放大器接收第一和第二输入信号，并在驱动负载的输出节点处提供输出信号。 在小信号条件下，输出信号随差电压大致线性变化。 然而，在大信号条件下，连接到输出节点的轨到轨大信号输出升压级被布置成根据需要驱动靠近第一或第二供电轨的输出节点以提供负载所要求的电流。 大信号输出增强级在小信号条件下关闭，但快速进行，并在大信号条件下向负载传输最大电荷。

公开(公告)号：US07288993B2

公开(公告)日：2007-10-30

申请号：US11313545

申请日：2005-12-20

申请人： A. Paul Brokaw

发明人： A. Paul Brokaw

IPC分类号： H03F3/16

CPC分类号： H03F3/45278 ,  H03F1/3211 ,  H03F1/34 ,  H03F1/52 ,  H03F3/343 ,  H03F3/3435 ,  H03F3/345 ,  H03F3/42 ,  H03F3/4578 ,  H03F3/50 ,  H03F2200/426 ,  H03F2200/45 ,  H03F2200/91 ,  H03F2203/45526 ,  H03F2203/45722

摘要： A small signal amplifier with a large signal output boost stage are connected between first and second supply rails. The small signal amplifier receives first and second input signals and provides an output signal at an output node which drives a load. Under small signal conditions, the output signal varies approximately linearly with the difference voltage. However, under large signal conditions, a rail-to-rail large signal output boost stage connected to the output node is arranged to drive the output node close to the first or second supply rail as needed to provide the current demanded by the load. The large signal output boost stage is off in small signal conditions, but comes on rapidly and transfers maximum charge to the load under large signal conditions.

摘要翻译： 具有大信号输出升压级的小信号放大器连接在第一和第二电源轨之间。 小信号放大器接收第一和第二输入信号，并在驱动负载的输出节点处提供输出信号。 在小信号条件下，输出信号随差电压大致线性变化。 然而，在大信号条件下，连接到输出节点的轨到轨大信号输出升压级被布置成根据需要驱动靠近第一或第二供电轨的输出节点以提供负载所要求的电流。 大信号输出增强级在小信号条件下关闭，但快速进行，并在大信号条件下向负载传输最大电荷。

公开(公告)号：US20050035817A1

公开(公告)日：2005-02-17

申请号：US10883577

申请日：2004-06-30

申请人： Pietro Filoramo ,  Giovanni Cali

发明人： Pietro Filoramo ,  Giovanni Cali

IPC分类号： H03F1/32 ,  H03F3/45

CPC分类号： H03F3/4578 ,  H03F1/3211 ,  H03F3/45282 ,  H03F2203/45244 ,  H03F2203/45466

摘要： A method and related circuit structure correlate the transconductance value of transistors of different type, for example MOS transistors and bipolar transistors. The structure comprises a first differential cell formed by transistors of the first type and a second differential cell formed by transistors of the second type connected to each other by means of a circuit portion responsible for calculating an error signal obtained as difference between the cell differential currents and applied to said first differential cell and to an output node of the same circuit structure obtaining a transconductance correlation independent from process tolerances and temperature.

摘要翻译： 一种方法和相关电路结构将不同类型的晶体管的跨导值相关联，例如MOS晶体管和双极晶体管。 该结构包括由第一类型的晶体管形成的第一差分单元和由第二类型的晶体管形成的第二差分单元，该第二差分单元通过负责计算获得的误差信号的电路部分相互连接，该误差信号作为单元差分电流 并施加到所述第一差分单元和相同电路结构的输出节点，获得独立于过程公差和温度的跨导相关性。