Abstract: Systems and methods for Analog-to-Digital Converter (ADC) auto-sequential scanning with expansion multiplexer(s) and auxiliary circuit configuration control(s). In some embodiments, an electronic circuit may include: a multiplexer; an Analog-to-Digital Converter (ADC) coupled to the multiplexer; and a control circuit coupled to the ADC and to the multiplexer, where the control circuit is configured to, as part of an auto-sequential scan, select one of a plurality of input channels coupled to the multiplexer via an expansion multiplexer.