Response to the following question:
The current-source circuit of Fig. utilizes a pair of matched pnp transistors having IS = 10-15A, β = 50, and / VA / = 50 V. It is required to design the circuit to provide an output current IO = 1 mA at VO = 1 V. What values of IREF and R are needed? What is the maximum allowed value of VO while the current source continues to operate properly? What change occurs in IO corresponding to VO changing from the
