Find the minimum value of VCC for proper operation of the NE5234 op amp. For simplicity, assume V_EE= 0, |V_BE(on)| = 0.7 V, and |V_CE(sat)| = 0.1 V. Also, ignore base currents. Assume the bias circuits in Figures 6.34 and 6.40 operate properly even though some transistors in these circuits may operate in or near saturation with low V_CC.

Figure 6.34:

Transcribed Image Text:

Vcc R58 R54 R50 R47 33 k2 33 k2 33 k2 33 k2 C58 1 pF Q54 Bias, Q58 Q50 Q47 Q56 Q55 Q48 Q59 Q52 Q51 Q60 Q57 Q49 Bias5 О5з С д9 R60 1 pF R57 3 kΩ 1 ΜΩ -VEE = 0 %3D H