OP AMP Modules and Loading Figure P11–80 shows an interconnection of three basic OP AMP modules.

(a) Does this interconnection involve loading?

(b) Find the overall transfer function of the interconnection and locate its poles and zeros.

(c) Find the steady-state output v2(t) when the input is v1(t) ¼ cos 500t V. Repeat for v1(t) ¼ cos 10 kt Vand again for v1(t) ¼ cos 200 kt V.

(d) Can you think of a use for this circuit?

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+ 10 10 1000 pF 10 W 10 w 10 10 v1(t) + 1st stage 10 w ww 0.1 F www 2nd stage FIGURE P11-80 + + V2(1) 3rd stage