INSTAMP1.CIR - 3 OPAMP INSTRUMENTATION AMPLIFIER * VS 2 1 SIN(0 1 10KHZ) VCM 1 0 SIN(0 5 1KHZ) * * BUFFERED AMPLIFIER XOP1 2 4 6 OPAMP1 R1 4 6 10K R2 4 5 200 R3 5 7 10K XOP2 1 5 7 OPAMP1 * DIFFRENTIAL AMPLIFIER R4 6 8 10K R5 8 10 10K R6 7 9 10K R7 9 0 10K XOP3 9 8 10 OPAMP1 * * OPAMP MACRO MODEL, SINGLE-POLE * connections: non-inverting input * | inverting input * | | output * | | | .SUBCKT OPAMP1 1 2 6 * INPUT IMPEDANCE RIN 1 2 10MEG * GAIN BANDWIDTH PRODUCT = 10MHZ * DC GAIN (100K) AND POLE 1 (100HZ) EGAIN 3 0 1 2 100K RP1 3 4 1K CP1 4 0 1.5915UF * OUTPUT BUFFER AND RESISTANCE EBUFFER 5 0 4 0 1 ROUT 5 6 10 .ENDS * * ANALYSIS .TRAN 0.01MS 1.0MS * VIEW RESULTS .PLOT TRAN V(2) V(10 .PRINT TRAN V(2) V(10) .PROBE .END