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800 Chapter 12 Analog Integrated Circu 12.8 The circuit of Fig. P12.8 illustrates a simple BJT op-amp that resembles the inpu
VCC= +15 V O vOUT 24 Rref 0s 왜 R3 EE-15 V Figure P12.8
800 Chapter 12 Analog Integrated Circu 12.8 The circuit of Fig. P12.8 illustrates a simple BJT op-amp that resembles the input stage of the LM741. It consists of a differential input stage cascaded with a class A voltage-follower output stage formed by Qs (a) Choose values for Rref and RI such that the bias currents through R2 and R3 are both set to approx- imately 50μΑ. (b) Choose values for R2, R3, R4, and Rs such that VOUT is biased at approximately zero.
VCC= +15 V O vOUT 24 Rref 0s 왜 R3 EE-15 V Figure P12.8
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