SEMICONDUCTOR DEVICE AND INVERTER SYSTEM

摘要

A semiconductor device includes first and second resistor groups, first and second switch groups, a register, and an amplifier. The first resistor group includes plural first resistors connected in series between a first terminal and an output of the amplifier. The first switch group includes plural first switches. Each of the first switches is connected between a corresponding one of the connection point between the first resistors and the inverting input terminal of the amplifier. The second resistor group includes plural second resistors connected in series between a second terminal of the amplifier and a reference voltage source. The second switch group includes plural second switches. Each of the second switches is connected between a corresponding one of the connection point between the second resistors and a positive input terminal of the amplifier. The register selects each of first and second switches.

主权项

1. A semiconductor device, comprising:
an amplifier having an inverting input terminal and a noninverting input terminal; a gain switching resistor group having a plurality of first resistors, the first resistors connected in series between a first input terminal and an output of the amplifier; a first switch group having a plurality of first switches, each of the first switches coupled between a corresponding one of connection points of the first resistors and the inverting input terminal of the amplifier; an offset adjustment resistor group having a plurality of second resistors, the second resistors coupled in series between a second input terminal and a reference voltage; and a second switch group having a plurality of second switches, each of the second switches coupled between a corresponding one of connection points of the second resistors and the non-inverting input terminal of the amplifier.