公开(公告)号：US4578695A

公开(公告)日：1986-03-25

申请号：US554025

申请日：1983-11-21

申请人： Francois-Xavier Delaporte ,  Gerard M. Lebesnerais ,  Jean-Pierre Pantani

发明人： Francois-Xavier Delaporte ,  Gerard M. Lebesnerais ,  Jean-Pierre Pantani

IPC分类号： H01L27/04 ,  H01L21/822 ,  H01L21/8222 ,  H01L27/02 ,  H01L27/06 ,  H01L29/8605 ,  H03K19/0175 ,  H02H9/04 ,  H03K3/01 ,  H03K5/153

CPC分类号： H03K19/017509 ,  H01L27/0229 ,  H01L29/8605

摘要： A monolithically integrated resistive attenuator is autobiased from an input bipolar signal the amplitude of which is higher than the integrated circuit voltage supplies. The resistive attenuator is arranged in a first pocket formed in an epitaxial layer, and is connected between the input bipolar signal and ground. An intermediate tap produces an output signal. A diode and capacitor are formed in a second pocket. The diode is connected between the input bipolar signals and the epitaxial layer while the capacitor is connected between the epitaxial layer and the isolation walls thereof. The positive half-periods of the input bipolar signal charges the capacitor, which in turn biases the epitaxial layers. The attenuator, therefore, can be monolithically integrated into a silicon chip and remain isolated for all values of the input bipolar signal. The output signal produced by the attenuator is less than the integrated circuit voltage supplies so that the circuits driven by the output signal can be integrated without difficulties.

摘要翻译： 单片集成电阻衰减器从输入双极性信号自动偏置，其幅度高于集成电路电压源。 电阻衰减器布置在形成于外延层中的第一凹坑中，并连接在输入双极性信号和地之间。 中间抽头产生输出信号。 二极管和电容器形成在第二口袋中。 二极管连接在输入双极性信号和外延层之间，而电容器连接在外延层及其隔离壁之间。 输入双极性信号的正半周期对电容器充电，电容器进一步偏置外延层。 因此，衰减器可以单片集成到硅芯片中，并且对于输入双极性信号的所有值保持隔离。 由衰减器产生的输出信号小于集成电路电压供应，使得由输出信号驱动的电路可以毫无困难地集成。

公开(公告)号：US4516247A

公开(公告)日：1985-05-07

申请号：US496328

申请日：1983-05-19

申请人： Henri Carsalade ,  Francois-Xavier Delaporte ,  Jean-Pierre Pantani

发明人： Henri Carsalade ,  Francois-Xavier Delaporte ,  Jean-Pierre Pantani

IPC分类号： H04L25/03 ,  H03K19/018 ,  H04L13/18 ,  H04L25/24 ,  H03K5/153 ,  H04L25/06

CPC分类号： H04L25/24 ,  H03K19/01806

摘要： A circuit for receiving signals from a device connected through a line meeting the requirements of EIA RS232C Standard, comprising a differential amplifier (2) receiving an input signal the amplitude of which is divided by factor k through input network (1). The switching threshold of amplifier (2) is variable and has a first value to ensure switching on the positive slope edge of the input signal and a second value to ensure switching on the negative slope edge. This circuit comprises circuits for detecting the status of the connected device, including a level detector (3) and a decision circuit (4) which, according to the outputs of the receiver and level detector (5), generates a signal indicating the status of the connected device. Integrators (5, 6) are provided for preventing the status indicating signal from changing its level when the input signal goes through zero or receives short noise pulses.

摘要翻译： 用于从通过符合EIA RS232C标准要求的线路连接的设备接收信号的电路，包括差分放大器（2），差分放大器（2）通过输入网络（1）接收其幅度除以因子k的输入信号。 放大器（2）的切换阈值是可变的，并且具有第一值以确保接通输入信号的正斜率边缘，并且具有第二值以确保接通负斜率边缘。 该电路包括用于检测连接装置的状态的电路，包括电平检测器（3）和判定电路（4），该电路根据接收器和电平检测器（5）的输出产生指示状态的信号 连接的设备。 提供积分器（5,6），用于当输入信号通过零或接收短噪声脉冲时，防止状态指示信号改变其电平。