Application-specific integrated circuit for pressure sensor in automobile, has processing module arranged to determine control corresponding to selection module for inducing quasi equality of stages' time constants and third time constant

摘要

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.