公开(公告)号：US20030001594A1

公开(公告)日：2003-01-02

申请号：US10171086

申请日：2002-06-12

Applicant: STMicroelectronics S.A.

Inventor： Frederic Hasbani

IPC: G01R027/08

CPC classification number: G01R27/14 ,  G01R17/105 ,  G01R17/12

Abstract: A device for the comparison of two resistors is based upon analog information carried by currents. The device includes a measurement circuit for extracting the currents from the two resistors to be compared, and copies the currents to a parallel analog-digital converter that carries out the division of the extracted currents. The device converts the ratio of the extracted currents into a digital code that is the image of the ratio of the two resistors. The ratio is constantly re-updated as a function of environmental parameters of the circuit, such as the operating temperature. Also disclosed is a system for correcting the value of integrated compensated resistors. The system implements a device of this kind that does not use a reference voltage generator.

Abstract translation: 用于比较两个电阻的器件是基于电流携带的模拟信息。 该装置包括用于从要比较的两个电阻器中提取电流的测量电路，并将电流复制到并行模数转换器，其执行提取的电流的划分。 该装置将提取的电流的比率转换为作为两个电阻器的比率的图像的数字码。 该比率作为电路的环境参数（诸如操作温度）的函数不断地被更新。 还公开了用于校正积分补偿电阻器的值的系统。 该系统实现这种不使用参考电压发生器的装置。