-
公开(公告)号：US06380789B1
公开(公告)日：2002-04-30
申请号：US09060617
申请日：1998-04-15
IPC分类号： G06G718
CPC分类号： G06G7/12 , H03F3/72 , H03F2203/7215
摘要： A switched input circuit structure of the type which includes an input terminal receiving an input voltage and an output terminal connected to an input capacitor. An operational amplifier is included having a non-inverting terminal connected to a ground reference terminal, an inverting input terminal, and an output terminal feedback connected to the inverting input terminal and held in a virtual ground condition by a parallel of first and second charge paths which are connected between the input terminal of the switched input circuit structure and the inverting input terminal of the operational amplifier and connected to the supply voltage reference and the ground reference, respectively.
摘要翻译： 一种切换输入电路结构，其类型包括接收输入电压的输入端和连接到输入电容的输出端。 包括运算放大器，其具有连接到接地参考端子的非反相端子，反相输入端子和连接到反相输入端子的输出端子反馈，并且通过第一和第二充电路径的并联保持在虚拟接地状态 它们连接在开关输入电路结构的输入端和运算放大器的反相输入端之间，分别连接到电源电压基准和接地基准。
-
公开(公告)号：US5621352A
公开(公告)日：1997-04-15
申请号：US517239
申请日：1995-08-21
申请人： Edoardo Botti , Guido Brasca
发明人： Edoardo Botti , Guido Brasca
CPC分类号： H03F1/0277 , H03F3/3081 , H03F3/68 , H03F3/72
摘要： A self-configurable, dual bridge, power amplifier has a window comparator sensing the level of input signals fed to the amplifier which-drives a plurality of configuring switches capable of configuring the amplifier as a single bridge amplifier driving a first and a second loads connected in series or as two distinct bridge amplifiers each driving one of the two loads. As long as the two levels of the input signals remain comprised between a range defined by a negative voltage reference and a positive voltage reference, the amplifier is configured as a single bridge driving the two loads in series, thus reducing sensibly power dissipation. Several embodiments of the configuring means are shown.
摘要翻译： 一个可自配置的双桥功率放大器具有一个窗口比较器，用于感测馈送到放大器的输入信号的电平，驱动多个配置开关，能够将放大器配置为单桥放大器，驱动第一和第二负载连接 串联或作为两个不同的桥式放大器驱动两个负载之一。 只要输入信号的两个电平保持在由负电压基准和正电压基准定义的范围之间，则放大器被配置为串联驱动两个负载的单个桥，因此降低了明智的功率耗散。 示出了配置装置的几个实施例。
-
公开(公告)号：US5396119A
公开(公告)日：1995-03-07
申请号：US47803
申请日：1993-04-15
申请人： Guido Brasca , Edoardo Botti
发明人： Guido Brasca , Edoardo Botti
IPC分类号： H01L29/78 , H01L21/336 , H01L27/02 , H03K17/08 , H03K3/26
CPC分类号： H01L27/0248 , H01L27/0203
摘要： A device including a MOS power transistor, and a temperature sensor including a bipolar transistor integrated in the MOS transistor and having its emitter and collector connected directly to the source and gate terminals respectively of the MOS transistor. Parallel to the base-emitter junction of the bipolar transistor, there is connected a voltage source for biasing the junction to such a value that the bipolar transistor remains off at room temperature, and absorbs the maximum current supplied by a drive circuit of the MOS transistor at the maximum permissible temperature TUM. At temperature TUM, the bipolar transistor takes over control of the gate-source voltage of the MOS transistor for maintaining thermal feedback of the device at maximum temperature TUM.
摘要翻译： 一种包括MOS功率晶体管的器件和包括集成在MOS晶体管中的双极晶体管的温度传感器，其发射极和集电极分别直接连接到MOS晶体管的源极和栅极端子。 与双极型晶体管的基极 - 发射极并联，连接有用于将结的偏置电压到在双极晶体管在室温下保持截止的值，并且吸收由MOS晶体管的驱动电路提供的最大电流 在最大允许温度TUM。 在温度TUM下，双极晶体管控制MOS晶体管的栅极 - 源极电压，以保持器件的热反馈在最高温度TUM。
-
4.发明授权Unitary-gain final stage particularly for monolithically integratable power amplifiers 失效单体增益最终阶段，特别适用于单一可集成功率放大器
公开(公告)号：US5216381A
公开(公告)日：1993-06-01
申请号：US808498
申请日：1991-12-17
申请人： Edoardo Botti , Guido Brasca
发明人： Edoardo Botti , Guido Brasca
CPC分类号： H03F3/45286 , H03F3/3008 , H03F3/3037 , H03F3/45291 , H03F2203/45028 , H03F2203/45188 , H03F2203/45471
摘要： Unitary-gain final stage particularly for monolithically integratable power amplifiers, which comprises a pair of final N-channel MOS power transistors. The first transistor has its drain terminal connected to a supply voltage and its source terminal connected to the drain terminal of the second transistor. The source terminal of the second transistor is connected to the ground. The output terminal of the power amplifier is connected between the source terminal of the first transistor and the drain terminal of the second transistor. The final stage furthermore comprises a high-gain feedback differential amplifier which has its non-inverting input terminal connected to the input of the power amplifier, its inverting input terminal connected to the output terminal of the differential amplifier and its output terminal connected to the gate terminal of the second transistor. A leveling circuit is furthermore connected to the gate terminal of the second transistor. A third MOS transistor has its source terminal connected to the input of the amplifier, and its gate terminal and drain terminal are connected to the gate terminal of the first transistor and to a first driven current source.
-
5.发明授权First and second order CMOS elementary cells for time-continuous analog filters 失效用于时间连续模拟滤波器的一阶和二阶CMOS单元
公开(公告)号：US6031416A
公开(公告)日：2000-02-29
申请号：US67127
申请日：1998-04-27
CPC分类号： H03H11/04
摘要： A CMOS elementary cell of the first order for time-continuous analog filters with non-linearity compensation, is connected between a first supply voltage reference and a second voltage reference. The cell is of a type which comprises at least a first MOS transistor having its conduction terminals connected to the first supply voltage reference and to an output terminal, and having a control terminal connected to an input terminal of the first order CMOS elementary cell. The cell further comprises a second MOS transistor in diode configuration, and an equivalent capacitor, both connected to the output terminal of the first order CMOS elementary cell. The second, diode-connected MOS transistor and the equivalent capacitor act as a load for the first MOS transistor. The first MOS transistor operates as a drive transistor operatively tied to an input voltage signal being supplied to the input terminal of the first order CMOS elementary cell. A second order filter CMOS elementary cell is similarly connected.
摘要翻译： 具有非线性补偿的时间连续模拟滤波器的第一阶CMOS元件连接在第一电源电压基准和第二参考电压之间。 电池是至少包括其导通端子连接到第一电源电压基准的第一MOS晶体管和输出端子，并且具有连接到第一级CMOS基本单元的输入端子的控制端子的类型。 电池还包括二极管配置的第二MOS晶体管和等效电容器，两者均连接到一阶CMOS元件单元的输出端子。 第二个二极管连接的MOS晶体管和等效电容器用作第一MOS晶体管的负载。 第一MOS晶体管作为驱动晶体管工作，该驱动晶体管可操作地连接到被提供给第一阶CMOS元件单元的输入端的输入电压信号。 类似地连接二阶滤波器CMOS单元。
-
公开(公告)号：US5444417A
公开(公告)日：1995-08-22
申请号：US286706
申请日：1994-08-05
申请人： Edoardo Botti , Guido Brasca
发明人： Edoardo Botti , Guido Brasca
CPC分类号： H03F1/0277 , H03F3/3081 , H03F3/68 , H03F3/72
摘要： A self-configurable, dual bridge, power amplifier has a window comparator to sense amplifier signals and control a plurality of configuring switches capable of configuring the amplifier either as a single bridge amplifier driving two loads connected in series or as two distinct bridge amplifiers each driving one of the two loads. When the two amplifier signals remain within a range defined by a negative voltage reference and a positive voltage reference, the amplifier is configured as a single bridge driving the two loads in series, thus reducing power dissipation. Several embodiments of the invention are shown.
摘要翻译： 一个自配置的双桥功率放大器具有一个窗口比较器，用于读出放大器信号，并控制多个可配置放大器的配置开关，作为驱动串联连接的两个负载的单桥放大器，或者驱动两个独立的桥接放大器，每个驱动 两个负载之一。 当两个放大器信号保持在由负电压基准和正电压基准定义的范围内时，放大器被配置为串联驱动两个负载的单桥，从而降低功耗。 示出了本发明的几个实施例。
-
公开(公告)号：US5365188A
公开(公告)日：1994-11-15
申请号：US192858
申请日：1994-02-07
申请人： Edoardo Botti , Guido Brasca
发明人： Edoardo Botti , Guido Brasca
CPC分类号： H03F1/0277 , H03F3/3081 , H03F3/68 , H03F3/72
摘要： A self-configurable, dual bridge, power amplifier has a window comparator sensing the level of input signals fed to the amplifier which drives a plurality of configuring switches capable of configuring the amplifier as a single bridge amplifier driving a first and a second loads connected in series or as two distinct bridge amplifiers each driving one of the two loads. As long as the two levels of the input signals remain comprised between a range defined by a negative voltage reference and a positive voltage reference, the amplifier is configured as a single bridge driving the two loads in series, thus reducing sensibly power dissipation.
摘要翻译： 自配置双桥功率放大器具有窗口比较器，其感测馈送到放大器的输入信号的电平，其驱动能够配置放大器的多个配置开关作为驱动第一和第二负载的单桥放大器 系列或作为两个不同的桥式放大器驱动两个负载中的一个。 只要输入信号的两个电平保持在由负电压基准和正电压基准定义的范围之间，则放大器被配置为串联驱动两个负载的单个桥，因此降低了明智的功率耗散。
-
8.发明授权High efficiency power audio amplifiers comprising two amplifier with a single feed 失效高效率功率音频放大器，包含两个放大器与单个馈电
公开(公告)号：US5194821A
公开(公告)日：1993-03-16
申请号：US793628
申请日：1991-11-18
申请人： Davide Brambilla , Guido Brasca , Edoardo Botti
发明人： Davide Brambilla , Guido Brasca , Edoardo Botti
CPC分类号： H03F1/0277 , H03F3/3081
摘要： The amplifier comprises a first and a second amplifier block of opposite phase driven by a single input signal and having its outputs connected to the two terminals of a load. It also comprises circuit means to disable one of the said amplifier blocks when the absolute value of the input signal is less than a predetermined threshold level. A passive feedback system capable of maintaining the amplifier gain constant is located between the aforesaid terminals of the load and the inputs to the two amplifier blocks.
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.016 秒)
