Hi all,
For the op-amp circuit in attachment i'm asked to find the \(I_3\) current that renders the output swing maximum and the \(R_E\) that allows input swing between -1V +1V. The circuit parameters are given as;
\(V_CC=5V\)
\(V_EE=-5V\)
\(I_1 = 50uA\)
\(I_2 = 500uA\)
\(R_L = 1K\)
I think that\(I_3\) sets the bias point for Q7 and determines the transconductance. In small signal case, the positive half-wave of the input will cause the \(i_c\) to flow over \(R_L\) and the negative half-wave will result in a negative current over \(R_L\) in order to complete \(I_3\). However I can't go any further. How can I make any comment about the max output swing? What should be my approach on this question?
Thank you for your help.
For the op-amp circuit in attachment i'm asked to find the \(I_3\) current that renders the output swing maximum and the \(R_E\) that allows input swing between -1V +1V. The circuit parameters are given as;
\(V_CC=5V\)
\(V_EE=-5V\)
\(I_1 = 50uA\)
\(I_2 = 500uA\)
\(R_L = 1K\)
I think that\(I_3\) sets the bias point for Q7 and determines the transconductance. In small signal case, the positive half-wave of the input will cause the \(i_c\) to flow over \(R_L\) and the negative half-wave will result in a negative current over \(R_L\) in order to complete \(I_3\). However I can't go any further. How can I make any comment about the max output swing? What should be my approach on this question?
Thank you for your help.
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