| 摘要 |
#CMT# #/CMT# The circuit (CS) has a selection module (P1) including switches (I1N, I2M, IN1L, IN2P) assembled on electronic components with capacitors (C1N, C2M) and resistors (R1L, R2P). The module is arranged to ensure a combination of the components in an analog stage (E1) and a combination of coefficient values in a filtering module (M2), based on a control generated by a processing module (MT). The module (MT) is arranged to determine a control corresponding to the module (P1), for inducing quasi-equality of time constants of the stage and a digital stage (E2), respectively, and a third time constant. #CMT#USE : #/CMT# Application-specific integrated circuit for a pressure sensor of a heater plug of an automobile. #CMT#ADVANTAGE : #/CMT# The processing module is arranged for determining the proper control corresponding to the selecting module for inducing quasi equality of two time constants of the analog and digital stages and the third time constant, thus automatically controlling the adjustment between the two time constants or cut-off frequencies, of the stages, and hence optimizing the distortion introduced by a filtering module of the analog stage. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic functional circuit representation of an application-specific integrated circuit. CS : Application-specific integrated circuit MT : Processing module C1N, C2M : Capacitors E1 : Analog stage E2 : Digital stage I1N, I2M, IN1L, IN2P : Switches M2 : Filtering module P1 : Selection module R1L, R2P : Resistors. |
