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1.发明授权Interface circuit in conformity with EIA standards and implemented with an operational amplifier-like circuit 失效接口电路符合EIA标准，并采用运算放大器状电路实现
公开(公告)号：US4340922A
公开(公告)日：1982-07-20
申请号：US208959
申请日：1980-11-21
IPC分类号： H03K5/02 , H03K17/082 , H03K19/018 , H02H9/04
CPC分类号： H03K19/01831 , H03K17/0826 , H03K5/02
摘要： An interface circuit for exchanging digital signals between two pieces of data processing equipment is provided in integrated form in accordance with international standards, such as EIA Standards. This is achieved through modification of an operational amplifier to adapt its use to the conditions and requirements of interface circuits.
摘要翻译： 根据国际标准，如EIA标准，以两种数据处理设备之间交换数字信号的接口电路集成形式提供。 这是通过修改运算放大器来实现的，以使其适用于接口电路的条件和要求。
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2.发明授权Method of correcting the voltage coefficient of resistors implanted or diffused in a semiconductor substrate 失效校正在半导体衬底中注入或扩散的电阻的电压系数的方法
公开(公告)号：US4164668A
公开(公告)日：1979-08-14
申请号：US796266
申请日：1977-05-12
申请人： Francois X. Delaporte , Robert M. Hornung , Anne-Marie Lamouroux , Gerard M. Lebesnerais , Jean-Paul J. Nuez
发明人： Francois X. Delaporte , Robert M. Hornung , Anne-Marie Lamouroux , Gerard M. Lebesnerais , Jean-Paul J. Nuez
IPC分类号： H01L27/08 , H01L29/8605 , H01L27/04
CPC分类号： H01L27/0802 , H01L29/8605
摘要： A method and structure for correcting the voltage coefficient of resistance (VCR) of a resistor in a semiconductor body is described. The resistor may be diffused or ion implanted of one conductivity and formed in an isolated layer of the opposite type of conductivity. The layer is typically an epitaxial layer. A potential V.sub.1 is applied to one end of the resistor and a potential V.sub.2 being applied to the opposite end. The method provides means for controlling variations of the potential difference between the resistive region and the epitaxial layer, either to minimize them or to cause the distortions generated by such variations to be compensated for by equal distortions of opposite directions, such that the overall distortion will be equal to zero. There is provided means to cause the potential of the epitaxial layer to reach a suitable value, preferably a value that varies in the same manner as the average value of the resistor whose VCR is to be corrected.
摘要翻译： 描述了用于校正半导体主体中的电阻器的电阻电压系数（VCR）的方法和结构。 电阻器可以是一种导电性的扩散或离子注入，并形成在相反类型导电性的隔离层中。 该层通常是外延层。 电位V1被施加到电阻器的一端并且电位V2被施加到相对端。 该方法提供用于控制电阻区域和外延层之间的电位差的变化的装置，以使它们最小化或引起由这种变化产生的失真由相反方向的相等失真补偿，使得整体失真将 等于零。 提供了使外延层的电位达到适当值的装置，优选地以与其VCR被校正的电阻器的平均值相同的方式变化的值。
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公开(公告)号：US4231020A
公开(公告)日：1980-10-28
申请号：US938273
申请日：1978-08-29
摘要： This invention relates to a digital to analog converter in general and specifically to unitary or monolithic miniature digital to analog converters designed to be fully embodied on a single one-half inch module without requiring external converter components. The digital to analog converter comprises n binary current sources and n two-way switches, n being the number of input word bits. Each switch is driven by a bit input and its function is to steer the current of the corresponding source either into a summing line for output or into a dump line. A primary feature of this converter is the separation of all individual bit converter structures comprising a current source and steering means into two different groups. In this scheme, a first group of converter structures is used to convert the high order bits and a second group of converter structures is used to convert the low order bits. This arrangement allows the provision of different types of current sources for the different converter structures depending upon the accuracy required for each current source. Control inputs are provided for acting upon the steering means to generate reference levels to which an input analog signal in an A/D converter is compared. By this technique, the D/A converters of the present invention may be utilized in A/D encoding and an improved conversion accuracy of about zero is provided.
摘要翻译： 本发明涉及一般的数模转换器，特别涉及一体式或单片式微型数/模转换器，其被设计成完全体现在单个半英寸的模块上，而不需要外部转换器部件。 数模转换器包括n个二进制电流源和n个双向开关，n是输入字位数。 每个开关由位输入驱动，其功能是将相应源的电流转换为求和线以进行输出或转储线。 该转换器的主要特征是将包括电流源和转向装置的所有单独的位转换器结构分离成两个不同的组。 在该方案中，使用第一组转换器结构来转换高阶位，并且使用第二组转换器结构来转换低阶位。 这种布置允许根据每个电流源所需的精度为不同的转换器结构提供不同类型的电流源。 控制输入被提供用于作用于转向装置以产生比较A / D转换器中的输入模拟信号的参考电平。 通过这种技术，本发明的D / A转换器可以用于A / D编码，并提供大约零的改进的转换精度。
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