Semiconductor device and sensor system

摘要

A semiconductor device includes an analog front-end unit that performs analog front-end processing of a measurement signal input from a sensor, where circuit configuration and circuit characteristics for performing the analog front-end processing are changeable, and an MCU unit that converts the measurement signal after the analog front-end processing from analog to digital and sets circuit configuration and circuit characteristics to the analog front-end unit.

主权项

1. A semiconductor device comprising:
an analog front-end unit that includes a configurable amplifier to performs analog front-end processing of a measurement signal input from a sensor, the configurable amplifier including an operational amplifier and a switch that switches a destination of an input terminal of the operational amplifier to change circuit configurations and circuit characteristics of the analog front-end unit; and a control unit that includes an analog-to-digital converter to converts the measurement signal after the analog front-end processing and a change timing detection unit, wherein the control unit changes the configurations and characteristics of the analog front-end unit at a timing indicated by the change timing detection unit and the analog-to-digital converter stops the converting during the changing.