A Digitally Calibrated Bandgap Reference With 0.06% Error for Low-Side Current Sensing Application.

Accurate current and voltage measurements are essential for estimating the state of charge of an automotive battery. Typically, circuits are designed to measure low-side current of lead-acid battery. These circuits, however, require a precision reference voltage across a temperature range. In this paper, a design of an on-chip precision bandgap reference with a digitally calibrated technique is de...