PSpice model of a compensated op amp

EE446 Report

To: P.J. Galvin, R.J Shoop and M.E. Turk

From: (1, 2 or 3 person teams)

Date: 2/25/08

Subject: PSpice model of the TL054 op amp

Introduction: The circuit shown in Figure 1 is proposed as a model of a compensated op amp. This model incorporates the input and output impedances of the op amp and the open loop gain of a compensated op amp:

where a_o is the dc gain, f_t is the unity-gain bandwidth and v_o is the node voltage at the output node of the op amp.

Figure 1.Model of a Compensated Op Amp

The parameters of the model are related to the parameters of a compensated op amp by the equations

R_i =… , A = … , R = … , C = … and R_o = …

Conclusion: …

Results:

R1: The parameters of the TL054 op amp are …. Using the equations given in the introduction, the parameters of the model of the TL054 op amp are ….

R2: The plot of v_o as a function of v_D shown in Figure 2 was obtained using the PSpice simulation shown in Figure 3…

R3: The simulation indicate that …