Study of Method Improving Accuracy of Band-gap Temperature Sensor

Band-gap digital temperature sensor is a temperature-sensitive device based on band-gap structure,whose PN junction increasing voltage is in direct proportional to IC PTAT.It has high accuracy as well as some error.But the error keeps considerably stable with the change of time and external environment.According this characteristic,used MCU technology,based on linear interpolation idea,to compensate the error.The error-adjustment compensation method is simple and more accurate,with low-cost and no external hardware.