OPDFR_OL.CIR - OPAMP DIFFERENTIATOR - OPEN-LOOP ANALYSIS * * INPUT SOURCES SHORTED * C1 0 2 10NF R1 2 3 5K R2 3 4 500K XOP 0 30 4 OPAMP1 * * OPEN-LOOP TEST SIGNAL VTEST 30 0 AC 1VAC * * OPAMP MACRO MODEL, SINGLE-POLE * connections: non-inverting input * | inverting input * | | output * | | | .SUBCKT OPAMP1 1 2 6 * INPUT IMPEDANCE RIN 1 2 10MEG * DCGAIN =100K AND POLE1=1/(2*PI*RP1*CP1)=100HZ * GBP = DCGAIN X POLE1 = 10MHZ EGAIN 3 0 1 2 100K RP1 3 4 1000 CP1 4 0 1.5915UF * OUTPUT BUFFER AND RESISTANCE EBUFFER 5 0 4 0 1 ROUT 5 6 10 .ENDS * * ANALYSIS .AC DEC 5 1 10MEG * * VIEW RESULTS .PLOT AC V(4) V(3) .PROBE .END