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CHAP. 15]

393

CIRCUIT ANALYSIS USING SPICE AND PSPICE

.STEP .AC .PROBE .END

LIN LIN

CAP 500

short(C) 1 pF 10 10000 k

101 pF

25 pF

The frequency response is plotted by Probe for the frequency varying from 10 kHz to 10 MHz as shown in Fig. 15-33(b).

Fig. 15-33

15.13 Model the op amp of Fig. 15-34(a) as a subcircuit and use it to find the frequency response of V3 =Vac in Fig. 15-34ðbÞ for f varying from 1 MHz to 1 GHz. The source file is Closed loop frequency response of amplifier, Fig. 15-34 .SUBCKT OPAMP 1 2 3 4

Mahmood_Nahvi_eBook_Schaum_s_Outlines_Theory_An  
Mahmood_Nahvi_eBook_Schaum_s_Outlines_Theory_An  
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