Formula to Calculate temperature from Temperature sensor‘ADC value to the actual temperature value (°C) of ADuC7121

HI ,EVERYONE,

i am using aduc7121's temperature sensor to monitor the working temperature of my product,no i have get the real ADC value of temperature sensor,But,i do not know how to change the ADC value to the actual temperature in °C

Do U have any idea about this ?

Pls leave me a message

Formula to Calculate temperature from Temperature sensor‘ADC value to the actual temperature value (°C) of ADuC7121