*////////////////////////////////////////////////////////////////////// * (C) National Semiconductor, Inc. * Models developed and under copyright by: * National Semiconductor, Inc. *///////////////////////////////////////////////////////////////////// * Legal Notice: This material is intended for free software support. * The file may be copied, and distributed; however, reselling the * material is illegal *//////////////////////////////////////////////////////////////////// * For ordering or technical information on these models, contact: * National Semiconductor's Customer Response Center * 7:00 A.M.--7:00 P.M. U.S. Central Time * (800) 272-9959 * For Applications support, contact the Internet address: * amps-apps@galaxy.nsc.com *////////////////////////////////////////////////////////// *LMC7101A CMOS OP-AMP MACRO-MODEL *////////////////////////////////////////////////////////// * * connections: non-inverting input * | inverting input * | | positive power supply * | | | negative power supply * | | | | output * | | | | | * | | | | | .SUBCKT LMC7101A/NS 1 2 99 50 28 * CAUTION: SET .OPTIONS GMIN=1E-16 TO CORRECTLY MODEL INPUT BIAS CURRENT. * *Features: *Operates from single or dual supplies *Rail-to-rail input and output swing *Ultra low input current = 2pA *Slew rate = 1.2V/uS * *NOTE: Noise is not modeled. * Asymmetrical gain is not modeled. * *****************INPUT STAGE************** * I1 99 4 17U M1 5 2 4 99 MOSFET R3 5 50 5.651K M2 6 7 4 99 MOSFET R4 6 50 5.651K *Fp2=5.9 MHz C4 5 6 2.3868P G0 98 9 6 5 4.4165E-2 R0 98 9 1K DP1 1 99 DA DP2 50 1 DC DP3 2 99 DB DP4 50 2 DC *For accurate Ib , set GMIN<=1E-16 on .OPTIONS line. * ***********COMMON MODE EFFECT*********** * I2 99 50 420.5U *^Quiescent current EOS 7 1 POLY(1) 16 49 4E-3 1 *Offset voltage.......... R8 99 49 40K R9 49 50 40K * ***************POLE STAGE*************** * *Fp=13.3 MHz G3 98 15 9 49 1E-3 R12 98 15 1K C5 98 15 11.967P * ************POLE/ZERO STAGE************* * *Fp=600 KHz, Fz= 1.4MHz G5 98 18 15 49 1E-3 R14 98 18 1K R15 98 19 750 C6 19 18 151.58P * *********COMMON-MODE ZERO STAGE********* * *Fpcm=20 KHz G4 98 16 POLY(2) 1 49 2 49 0 2.812E-8 2.812E-8 L2 98 17 7.958M R13 17 16 1K * **************SECOND STAGE************** * EH 99 98 99 49 1 G1 98 29 18 49 5.6667E-6 R5 98 29 100.37MEG V2 99 8 1.56 D1 29 8 DX D2 10 29 DX V3 10 50 1.56 * **************OUTPUT STAGE************** **New output stage below *(Change EH to go to 97 too) * F6 99 50 VA7 1 *^Dynamic supply current F5 99 35 VA8 1 D3 36 35 DX VA7 99 36 0 D4 35 99 DX E1 99 37 99 49 1 VA8 37 38 0 GN3 98 115 40 49 1U RN21 98 115 1MEG EN1 97 123 99 115 1 RN17 123 125 130 RN16 123 124 180 DN6 125 127 DX DN5 126 124 DX VN7 28 127 0.63 VN6 126 28 0.63 DN3 115 120 DX RN18 120 129 180K VN4 129 28 2.6 DN4 121 115 DX RN19 130 121 140K VN5 28 130 2.6 ENP 97 0 99 0 1 ENN 0 96 0 50 1 DN7 28 99 DX DN8 50 28 DX * * G6 38 40 49 29 16.667E-3 R16 38 40 2.3886K V4 30 40 .77 D5 30 97 DX V5 40 31 .77 D6 96 31 DX *Fp1=7.96 Hz C3 29 39 17P R6 39 40 1K * ***************MODELS USED************** * .MODEL DA D(IS=1.3E-11) .MODEL DB D(IS=1.2E-11) .MODEL DC D(IS=1.0E-11) .MODEL DX D(IS=1.0E-14) .MODEL MOSFET PMOS(VTO=0 KP=1.842E-3) .ENDS *$