Explanation: Op-amps have more than one break frequency because only a few capacitors are present. Often upper break frequencies are well above the unity gain bandwidth. So, they are avoided in frequency response plot. 8. In a phase response curve of MC1556, the phase shift is -162.5o about 4MHz. If the approximate value of first break frequency is 5.5Hz. Determine the approximate value of the second break frequency?
A. 945.89MHz
B. 945.89kHz
C. 945.89GHz
D. 945.89Hz
Answer:A
Explanation: Op-amps have more than one break frequency because only a few capacitors are present. Often upper break frequencies are well above the unity gain bandwidth. So, they are avoided in frequency response plot. 8. In a phase response curve of MC1556, the phase shift is -162.5o about 4MHz. If the approximate value of first break frequency is 5.5Hz. Determine the approximate value of the second break frequency?
A. 945.89MHz B. 945.89kHz C. 945.89GHz D. 945.89Hz
Explanation: The phase angle equation is φ(f) = – tan-1 (f/fo1)- tan-1(f/fo2)