=> Ev= ± Vo+(RF/R1)×Vin = 3.99mv+(12kΩ/7.5kΩ)×1.33mv = ±6.118 ≅ ±6mv. 7. Consider the amplifier is nulled at 27oC. Calculate the output voltage , if the input voltage is 6.21mv dc at 50oC. Assume LM307 op-amp with specification: △Vio/△T=30µV/oC ; △Iio/△T = 300pA/oC; VS =±15v.
A. +0.53v or -0.68v
B. +0.52v or -0.78v
C. +0.54v or -0.90v
D. +0.51v or -0.86v
Answer:A
=> Ev= ± Vo+(RF/R1)×Vin = 3.99mv+(12kΩ/7.5kΩ)×1.33mv = ±6.118 ≅ ±6mv. 7. Consider the amplifier is nulled at 27oC. Calculate the output voltage , if the input voltage is 6.21mv dc at 50oC. Assume LM307 op-amp with specification: △Vio/△T=30µV/oC ; △Iio/△T = 300pA/oC; VS =±15v.
A. +0.53v or -0.68v B. +0.52v or -0.78v C. +0.54v or -0.90v D. +0.51v or -0.86v
Explanation: Change in temperature △T = 50oC-27oC = 23oC.