A certain bandgap voltage reference is buffered to the outside via an op amp voltage follower. The reference’s output noise en1 has enw1 5 100 Hz and fce1 5 20 Hz, and the op amp’s input noise en2 has...

A certain bandgap voltage reference is buffered to the outside via an op amp voltage follower. The reference’s output noise en1 has enw1 5 100 Hz and fce1 5 20 Hz, and the op amp’s input noise en2 has enw2 5 25 nVHz and fce2 5 200 Hz. Moreover, the op amp is dominant-pole compensated for GBP 5 1 MHz via an external capacitance Cc. (a) Calculate the total noise above 0.1 Hz at the output of the follower. (b) Repeat if Cc is increased by a factor of 100.