ADCIN_DIFF_SE1.CIR - DIFFERENTIAL TO SINGLE-ENDED ADC INPUT DRIVER * * DIFFERENTIAL SOURCE VPOS 11 5 SIN(0V +2VPEAK 1KHZ) VNEG 12 5 SIN(0V -2VPEAK 1KHZ) * * COMMON MODE VOLTAGE VCM 5 0 DC 0 *VCM 5 0 SIN(2.0V 1VPEAK 10KHZ) * VREF 10 0 DC 0V * R1 12 2 10K R2 2 4 10K * R3 11 3 10K R4 3 10 10K XOP1 3 2 4 OPAMP1 * * SINGLE-POLE OPERATIONAL AMPLIFIER MACRO-MODEL * connections: non-inverting input * | inverting input * | | output * | | | .SUBCKT OPAMP1 1 2 6 * INPUT IMPEDANCE RIN 1 2 10MEG * DC GAIN (100K) AND POLE 1 (100HZ) * GBWP = 10MHZ 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 * .TRAN 0.01MS 2MS * .PLOT TRAN V(11) V(12) V(4) .PRINT TRAN V(11) V(12) V(4) .PROBE .END