A ±4-A High-Side Current Sensor With 0.9% Gain Error From -40 °C to 85 °C Using an Analog Temperature Compensation Technique.

This paper presents a fully integrated shunt-based current sensor that supports a 25-V input common-mode range while operating from a single 1.5-V supply. It uses a high-voltage beyond-the-rails ADC to directly digitize the voltage across an on-chip shunt resistor. To compensate for the shunt's large temperature coefficient of resistance (~0.335%/°C), the ADC employs a proportional-to-absolute-tem...