Explanation: The average rate of change of input offset voltage per unit change in temperature is called thermal voltage drift, i.e. △Vio/△T. 3. A completely compensated inverting amplifier is nulled at room temperature 25oC, determine the temperature at which the total output offset voltage will be zero?
A. 50oC
B. 25oC
C. 75oC
D. 125oC
Answer:A
Explanation: The average rate of change of input offset voltage per unit change in temperature is called thermal voltage drift, i.e. △Vio/△T. 3. A completely compensated inverting amplifier is nulled at room temperature 25oC, determine the temperature at which the total output offset voltage will be zero?
A. 50oC B. 25oC C. 75oC D. 125oC
Explanation: When amplifier is nulled at room temperature, the effect of input offset voltage and current is reduced to zero. Change in the total output offset voltage occurs only, if there is any change in the value of Vio and Iio. Therefore, the total output offset voltage will be zero at room temperature. 4. How the effect of voltage and current drift on the performance of an amplifier is determined?