公开(公告)号：US4682197A

公开(公告)日：1987-07-21

申请号：US812109

申请日：1985-12-23

申请人： Flavio Villa ,  Bruno Murari ,  Franco Bertotti ,  Aldo Torazzina ,  Fabrizio Stefani

发明人： Flavio Villa ,  Bruno Murari ,  Franco Bertotti ,  Aldo Torazzina ,  Fabrizio Stefani

IPC分类号： H01L21/8222 ,  H01L21/331 ,  H01L27/02 ,  H01L27/06 ,  H01L27/082 ,  H01L27/102 ,  H01L29/73 ,  H01L29/72 ,  H01L23/52 ,  H01L27/10 ,  H01L29/08

CPC分类号： H01L27/0211 ,  H01L27/1024

摘要： This integrated semiconductor device aims at drastic reduction of the direct secondary breakdown phenomena and has a plurality of side-by-side elementary transistors forming an interdigited structure. To reduce the thermal interaction between the elementary transistors, the latter are spaced apart from one another by a distance approximately equal to the width of one elementary transistor and are driven by current sources. Spacing apart reduces electrothermal interaction. Further, in order to minimize the device area requirements, the space between any two adjacent elementary transistors is made to accommodate drive transistors operating as current sources, or the elementary transistors of the complementary stage where the device forms a class B output stage, the two output transistors whereof are alternatively switched on.

摘要翻译： 该集成半导体器件旨在大大减少直接二次击穿现象，并且具有形成交叉结构的多个并排基本晶体管。 为了减小基本晶体管之间的热相互作用，后者彼此间隔开大约等于一个基本晶体管的宽度的距离，并由电流源驱动。 间距减少电热相互作用。 此外，为了最小化器件面积要求，使任何两个相邻基本晶体管之间的空间适合作为电流源工作的驱动晶体管，或者是器件形成B类输出级的补充级的基本晶体管， 输出晶体管交替接通。

公开(公告)号：US4878032A

公开(公告)日：1989-10-31

申请号：US180743

申请日：1988-04-12

申请人： Edoardo Botti ,  Aldo Torazzina ,  Fabrizio Stefani

发明人： Edoardo Botti ,  Aldo Torazzina ,  Fabrizio Stefani

IPC分类号： H03F3/30 ,  H03F3/20 ,  H03F3/213 ,  H03K17/0422 ,  H03K17/66

CPC分类号： H03K17/0422 ,  H03K17/667

摘要： This amplifier stage has saturation control and high dynamics. The stage comprises a pair of input current sources connected in series between a pair of reference voltage lines, a pair of output transistors, connected between the pair of reference voltage lines and defining an intermediate output terminal and a driving circuit comprising active elements and interposed between the input current sources and the output transistors. Saturation control is achieved through a pair of control circuits, one for each output transistor, comprising each a resistor interposed between the driving circuit and the respective output transistor so as to preset the balance saturation gain of the respective output transistor, and a transistor connected with its base to the driving circuit and with its collector and emitter between the output of the amplifier stage and the intermediate connection point between the input current sources, so as to define a negative feedback reducing imbalances existing between the currents fed by the input current sources, and therefore prevent high saturation levels of the transistors.

摘要翻译： 该放大器级具有饱和控制和高动态特性。 该级包括串联连接在一对参考电压线之间的一对输入电流源，一对输出晶体管，连接在该对参考电压线之间并且限定中间输出端和包括有源元件的驱动电路并且插入在 输入电流源和输出晶体管。 通过一对控制电路来实现饱和度控制，一对每个输出晶体管，每个控制电路包括插入在驱动电路和相应的输出晶体管之间的电阻器，以便预设相应输出晶体管的平衡饱和增益，以及与 其基极到驱动电路，并且其集电极和发射极在放大器级的输出端和输入电流源之间的中间连接点之间，以便限定负反馈，减少由输入电流源馈送的电流之间存在的不平衡， 并因此防止晶体管的高饱和度。

公开(公告)号：US4752747A

公开(公告)日：1988-06-21

申请号：US916801

申请日：1986-10-08

申请人： Edoardo Botti ,  Aldo Torazzina ,  Bruno Murari

发明人： Edoardo Botti ,  Aldo Torazzina ,  Bruno Murari

IPC分类号： H03F1/02 ,  H03F3/187 ,  H03F3/30

CPC分类号： H03F1/0222 ,  H03F3/187 ,  H03F3/3081 ,  H03F2200/411 ,  H03F2200/504

摘要： A device for increasing the power output of a low-tension operated amplifier which is connected to a standard impedance loudspeaker and is powered at a voltage level which, in the presence of an audio signal, consists of the DC operating voltage for the set and an overlapping variable voltage which is proportional to the audio signal input to the amplifier.Thus, a high dynamic range is afforded for the output signal from the amplifer directed to the loudspeaker.

摘要翻译： 一种用于增加低压操作放大器的功率输出的装置，其连接到标准阻抗扬声器并且在存在音频信号的情况下由电压的DC工作电压组成的电压电平供电，以及 与输入到放大器的音频信号成比例的重叠可变电压。 因此，提供了高动态范围，用于来自放大器的输出信号指向扬声器。

公开(公告)号：US5101170A

公开(公告)日：1992-03-31

申请号：US602106

申请日：1990-10-22

申请人： Aldo Torazzina ,  Bruno Murari

发明人： Aldo Torazzina ,  Bruno Murari

IPC分类号： H03F1/02 ,  H03G3/20 ,  H03G3/30

CPC分类号： H03G3/3026 ,  H03F1/0277 ,  H03F2200/468

摘要： A first non-inverting amplifier unit and a second inverting amplifier unit are driven by a single input signal; their outputs are connected across a load, directly and via a series capacitor, respectively. A circuit disables the second amplifier when the input signal is lower than a preset threshold level.

公开(公告)号：US20100162025A1

公开(公告)日：2010-06-24

申请号：US12601078

申请日：2007-05-21

申请人： Riccardo Russo ,  Aldo Torazzina

发明人： Riccardo Russo ,  Aldo Torazzina

IPC分类号： G06F1/30 ,  G06F1/28

CPC分类号： H04L12/10 ,  G06F1/26

摘要： A circuit is for monitoring the powering of a remote device through a LAN without generating an extra biasing voltage higher than the DC power supply voltage. DC voltage used for supplying the remote device is applied to the LAN line while an AC voltage is applied to the line for monitoring whether the remote device is connected to the LAN line. The DC voltage is applied to a first or “high” terminal and the AC voltage is applied to the other or “low” terminal of the LAN line through a decoupling capacitor. This arrangement allows the supplying of the remote device with a large DC voltage compatible with a fully integrated AC signal generator, disconnection detector, and PSE controller, and enhances the reliability of the recognition of whether the powered device is connected to, or disconnected from, the LAN line.

摘要翻译： 电路用于通过LAN监视远程设备的供电，而不会产生高于直流电源电压的额外偏置电压。 将用于供应远程设备的DC电压施加到LAN线路，同时将AC电压施加到用于监视远程设备是否连接到LAN线路的线路。 将直流电压施加到第一或“高”端子，并且通过去耦电容器将AC电压施加到LAN线路的另一端或“低”端。 这种布置允许远程设备提供与完全集成的AC信号发生器，断开检测器和PSE控制器兼容的大直流电压，并且增强了识别被动设备是否连接到或断开的可靠性， LAN线。

公开(公告)号：US4879526A

公开(公告)日：1989-11-07

申请号：US246111

申请日：1988-09-19

申请人： Edoardo Botti ,  Aldo Torazzina

发明人： Edoardo Botti ,  Aldo Torazzina

IPC分类号： H03F3/68 ,  H03F3/72

CPC分类号： H03F3/72 ,  H03F3/68

摘要： A monolithically integrated audio amplifier which is commutable from a stereo configuration to a bridge configuration and vice versa may have only seven pins, namely: two output pins, two input pins, an supply pin, a ground pin and a SVR pin. It comprises two operational amplifiers which may both have two distinct input differential stages, a first input differential stage being fedback according to a stereo configuration while the other input differential stage being fedback according to a bridge configuration of the two operational amplifiers. A comparator with an internally fixed threshold determines, in function of its output state, the switching on or the switching off of one or the other of said two distinct input differential stages of the two operational amplifiers and, therefore, either a stereo configuration or a bridge configuration of the audio amplifier. The input terminal of the comparator may be connected to an input pin or to the SVR pin of the amplifier and a biasing DC voltage level may be imposed thereto through external biasing means for selecting the desired configuration.

公开(公告)号：US4644294A

公开(公告)日：1987-02-17

申请号：US693777

申请日：1985-01-23

申请人： Sergio Palara ,  Aldo Torazzina

发明人： Sergio Palara ,  Aldo Torazzina

IPC分类号： H03F1/42 ,  H03F1/52 ,  H03F3/20 ,  H03F3/213 ,  H03F3/30

CPC分类号： H03F1/52

摘要： A device for protecting a push-pull output stage (G.sub.v) against a short-circuit between the output terminal (A) and the positive pole (+V.sub.cc) of the supply, comprising a first (A.sub.1) and a second (A.sub.2) threshold comparator, both having a first input terminal coupled to the output terminal (A) of the output stage and both having a second input terminal coupled to a predetermined voltage reference. The reference potential (RIF.sub.1) to which the threshold comparator (A.sub.1) is coupled is kept at a potential which is lower than the other reference potential (RIF.sub.2) to which threshold comparator (A.sub.2) is coupled. The output terminal of the first comparator (A.sub.2) is coupled to the activation terminal of a low impedance circuit means (LI) inserted between the output terminal (A) of the output stage and the negative pole (-V.sub.cc) of the supply. The output terminal of the second comparator (A.sub.2) is coupled to an inhibitor terminal of the output power amplifier stage (G.sub.v).

摘要翻译： 一种用于保护推挽输出级（Gv）抵抗电源的输出端（A）和正极（+ Vcc）之间的短路的装置，包括第一（A1）和第二（A2）阈值 比较器都具有耦合到输出级的输出端（A）的第一输入端，并且具有耦合到预定电压基准的第二输入端。 阈值比较器（A1）耦合到的参考电位（RIF1）保持在低于阈值比较器（A2）耦合到的另一参考电位（RIF2）的电位。 第一比较器（A2）的输出端子耦合到插入在输出级的输出端子（A）和电源的负极（-Vcc）之间的低阻抗电路装置（LI）的激活端子。 第二比较器（A2）的输出端耦合到输出功率放大器级（Gv）的抑制端。

公开(公告)号：US4623950A

公开(公告)日：1986-11-18

申请号：US574964

申请日：1984-01-30

申请人： Sergio Palara ,  Aldo Torazzina

发明人： Sergio Palara ,  Aldo Torazzina

IPC分类号： H03F1/52 ,  H01L27/02 ,  H03F1/42 ,  H02H3/42

CPC分类号： H01L27/0248

摘要： A protective device for a power element of an integrated circuit includes a circuit element for detecting and processing the value of the current flowing through the power element and the voltage supplied to the power element. The circuit element generates a measuring signal which, when it reaches a predetermined limit value, activates a threshold circuit which reduces the current level in the power element. The protective device also includes a circuit element for amplifying the measuring signal when it reaches the predetermined limit value.

摘要翻译： 用于集成电路的功率元件的保护装置包括用于检测和处理流过功率元件的电流值和提供给功率元件的电压的电路元件。 电路元件产生测量信号，当测量信号达到预定极限值时，激活阈值电路，其降低功率元件中的电流电平。 保护装置还包括用于在测量信号达到预定极限值时放大测量信号的电路元件。

公开(公告)号：US20100141279A1

公开(公告)日：2010-06-10

申请号：US12614211

申请日：2009-11-06

申请人： Aldo Torazzina ,  Riccardo Russo

发明人： Aldo Torazzina ,  Riccardo Russo

IPC分类号： G01R27/08

CPC分类号： G01R27/08 ,  G06F1/26 ,  H04L12/10

摘要： PDs that can be supplied through the LAN line are discriminated from PDs that cannot be so supplied as a function of the resistance of the supply line and of the voltage drop caused by nonlinear elements in series therewith. The values of these two parameters are estimated by applying two distinct voltages to the supply terminals of the LAN line and sensing the relative steady-state currents absorbed by the power supply line, and by processing voltage and current values for estimating the resistance of the line and the voltage drop caused by nonlinear elements connected in series therewith.

摘要翻译： 可以通过LAN线路提供的PD与根据供应线的电阻和由与其串联的非线性元件引起的电压降的函数不能被提供的PD进行区分。 这两个参数的值通过将两个不同的电压施加到LAN线路的电源端子并且感测由电源线吸收的相对稳态电流以及通过处理用于估计线路的电阻的电压和电流值来估计 以及由与其串联连接的非线性元件引起的电压降。

公开(公告)号：US4827221A

公开(公告)日：1989-05-02

申请号：US215848

申请日：1988-07-06

申请人： Edoardo Botti ,  Aldo Torazzina

发明人： Edoardo Botti ,  Aldo Torazzina

IPC分类号： H01L27/04 ,  H01L21/822 ,  H03F3/68

CPC分类号： H03F3/68

摘要： An integrated circuit in a seven pin package particularly for audio signal amplification comprises at least two integrated amplifiers selectively commutable in a bridge configuration or in a stereo configuration by means of at least three integrated switches driven by an integrated comparator with threshold set by an internally generated reference voltage and whose input is connected to the SVR pin commonly used to implement the function of common mode signals rejections. The internal commutation between the two selectable configurations is obtained by varying the level of the bias voltage applied to said SVR pin by means of an external voltage divider.

摘要翻译： 特别用于音频信号放大的七引脚封装中的集成电路包括至少两个集成放大器，其通过由集成比较器驱动的至少三个集成开关选择性地以桥式配置或立体声配置换向，其中阈值由内部产生 参考电压，其输入连接到通常用于实现共模信号拒绝功能的SVR引脚。 通过利用外部分压器改变施加到所述SVR引脚的偏置电压的电平来获得两个可选配置之间的内部换向。