Which among the following is an incorrect characteristic of an ideal Op-Amp ?
Which among the following is an incorrect characteristic of an ideal Op-Amp?
A. Infinite CMRR & Slew Rate
B. Infinite Voltage gain
C. Infinite Bandwidth
D. Infinite output offset voltage when input voltage is zero
Correct Answer : D. Infinite output offset voltage when input voltage is zero.
Explanation :
An ideal Op-Amp has an infinite CMRR, Slew Rate & Bandwidth. But, the output voltage is absolutely zero when the input voltage is zero. All the mentioned parameters tend to infinity except output voltage & resistance so that it becomes feasible for an output to drive infinite number of other devices.
Discussion
- diagram of small signal equivalent circuit of differential amplifier and obtain expressions for common mode gain and differential mode gain to it -anitha (09/24/17)
- differential amplifier