* OPA2992 * Created by Carolina Walter; December 14, 2021 * Created with Green-Williams-Lis Op Amp Macro-model Architecture * Copyright 2021 by Texas Instruments Corporation ****************************************************** * MACRO-MODEL SIMULATED PARAMETERS: ****************************************************** * OPEN-LOOP GAIN AND PHASE VS. FREQUENCY WITH RL, CL EFFECTS (Aol) * UNITY GAIN BANDWIDTH (GBW) * INPUT COMMON-MODE REJECTION RATIO VS. FREQUENCY (CMRR) * POWER SUPPLY REJECTION RATIO VS. FREQUENCY (PSRR) * DIFFERENTIAL INPUT IMPEDANCE (Zid) * COMMON-MODE INPUT IMPEDANCE (Zic) * OPEN-LOOP OUTPUT IMPEDANCE VS. FREQUENCY (Zo) * OUTPUT CURRENT THROUGH THE SUPPLY (Iout) * INPUT VOLTAGE NOISE DENSITY VS. FREQUENCY (en) * INPUT CURRENT NOISE DENSITY VS. FREQUENCY (in) * OUTPUT VOLTAGE SWING vs. OUTPUT CURRENT (Vo) * SHORT-CIRCUIT OUTPUT CURRENT (Isc) * QUIESCENT CURRENT (Iq) * SETTLING TIME VS. CAPACITIVE LOAD (ts) * SLEW RATE (SR) * SMALL SIGNAL OVERSHOOT VS. CAPACITIVE LOAD * LARGE SIGNAL RESPONSE * OVERLOAD RECOVERY TIME (tor) * INPUT BIAS CURRENT (Ib) * INPUT OFFSET CURRENT (Ios) * INPUT OFFSET VOLTAGE (Vos) * INPUT COMMON-MODE VOLTAGE RANGE (Vcm) * INPUT OFFSET VOLTAGE VS. INPUT COMMON-MODE VOLTAGE (Vos vs. Vcm) * INPUT/OUTPUT ESD CELLS (ESDin, ESDout) ****************************************************** .subckt OPA2992 IN+ IN- VCC VEE OUT ****************************************************** * MODEL DEFINITIONS: .model BB_SW VSWITCH(Ron=50 Roff=1e12 Von=700e-3 Voff=0) .model ESD_SW VSWITCH(Ron=50 Roff=1e12 Von=250e-3 Voff=0) .model OL_SW VSWITCH(Ron=1e-3 Roff=1e9 Von=900e-3 Voff=800e-3) .model OR_SW VSWITCH(Ron=10e-3 Roff=1e9 Von=1e-3 Voff=0) .model R_NOISELESS RES(T_ABS=-273.15) ****************************************************** V_GRp 52 MID 50 V_GRn 53 MID -35 I_OS ESDn MID 0 I_B 25 MID 10P V_ISCp 68 MID 65 V_ISCn 69 MID -65 V_ORn 67 VCLP -5.4 V11 73 66 0 V_ORp 65 VCLP 6.1 V12 72 64 0 V4 39 OUT 0 VCM_MIN 89 VEE_B 0 VCM_MAX 90 VCC_B 0 I_Q VCC VEE 2.4M XIn11 ESDn MID FEMT_0 Xi_n MID 25 FEMT_0 Xe_n ESDp 25 VNSE_0 C3 26 MID 5F IC=0 R74 MID 26 R_RES_1 1MEG GVCCS5 26 MID VSENSE MID -1U C2 CLAMP MID 184.6N IC=0 R61 MID CLAMP R_RES_2 1MEG XVCCS_LIM_2 27 MID MID CLAMP VCCS_LIM_2_0 R60 MID 27 R_RES_3 1MEG XVCCS_LIM_1 28 29 MID 27 VCCS_LIM_1_0 C23 30 MID 8P IC=0 R73 30 31 R_RES_4 10K R72 31 32 R_RES_5 352K C22 33 MID 75.07F IC=0 R71 33 34 R_RES_6 10K R70 34 35 R_RES_7 18.38K XVCCS_LIM_ZO 33 MID MID 36 VCCS_LIM_ZO_0 R69 35 MID R_RES_8 1 C21 37 38 90N IC=0 R68 38 MID R_RES_9 463.4 R67 38 37 R_RES_10 10K G_Adjust2 35 MID 31 MID 1 R64 32 MID R_RES_11 1 G_adjust1 32 MID 38 MID 22.58 R11 37 MID R_RES_12 1 R7 36 MID 1 Rdummy MID 39 R_RES_13 1.01K Rx 39 36 R_RES_14 10.1K G_Aol_Zo 37 MID CL_CLAMP 39 -368.16 R63 MID 40 R_RES_15 111.1 C6 40 41 159.2P R24 41 40 R_RES_16 100MEG G_adjust 41 MID VEE_B MID -802.1M R23 MID 41 R_RES_17 1 R22 MID 42 R_RES_18 1 GVCCS4 42 MID 43 MID -400 R20 MID 43 R_RES_19 2.506K C5 43 44 3.183P R19 44 43 R_RES_20 1MEG R18 MID 44 R_RES_21 1 GVCCS3 44 MID 45 MID -1 R17 MID 45 R_RES_22 900.8 C4 45 46 176.8P R16 46 45 R_RES_23 1MEG GVCCS2 46 MID VCC_B MID -1.761M R8 MID 46 R_RES_24 1 R15 MID 47 R_RES_25 1 G_2 47 MID 48 MID -6 R2b MID 48 R_RES_26 200K C1b 48 49 159F R1b 49 48 R_RES_27 1MEG R14 MID 49 R_RES_28 1 GVCCS1 49 MID 50 MID -1 R6 MID 50 R_RES_29 200 C1 50 51 159.2P R5 51 50 R_RES_30 1MEG G_1 51 MID ESDp MID -7.924M Rsrc MID 51 R_RES_31 1 R13 INn_ESDp INn_ESDn R_RES_32 50 R12 INp_ESDn INp_ESDp R_RES_33 50 XGR_AMP 52 53 54 MID 55 56 CLAMP_AMP_HI_0 R49 52 MID R_RES_34 1G R54 53 MID R_RES_35 1G R55 VSENSE 54 R_RES_36 1M C16 54 MID 1F R50 55 MID R_RES_37 1 R53 MID 56 R_RES_38 1 R51 55 57 R_RES_39 1M R52 56 58 R_RES_40 1M C14 57 MID 1F C15 MID 58 1F XGR_SRC 57 58 CLAMP MID VCCS_LIM_GR_0 XVOS_DRIFT 59 25 VOS_DRIFT_0 S5 VEE INp_ESDn VEE INp_ESDn S_VSWITCH_1 S4 VEE INn_ESDn VEE INn_ESDn S_VSWITCH_2 S2 INn_ESDp VCC INn_ESDp VCC S_VSWITCH_3 S3 INp_ESDp VCC INp_ESDp VCC S_VSWITCH_4 C18 60 MID 1P R57 61 60 R_RES_41 100 C17 62 MID 1P R56 63 62 R_RES_42 100 R48 MID 64 R_RES_43 1 G11 64 MID 65 MID -1 R47 66 MID R_RES_44 1 G10 66 MID 67 MID -1 XIQp VIMON MID MID VCC VCCS_LIMIT_IQ_0 XIQn MID VIMON VEE MID VCCS_LIMIT_IQ_0 C_DIFF ESDp ESDn 9P XCL_AMP 68 69 VIMON MID 70 71 CLAMP_AMP_LO_0 SOR_SWp CLAMP 72 CLAMP 72 S_VSWITCH_5 SOR_SWn 73 CLAMP 73 CLAMP S_VSWITCH_6 R42 70 MID R_RES_45 1 R45 MID 71 R_RES_46 1 R43 70 74 R_RES_47 1M R44 71 75 R_RES_48 1M C12 74 MID 1F C13 MID 75 1F XCL_SRC 74 75 CL_CLAMP MID VCCS_LIM_4_0 R41 68 MID R_RES_49 1G R46 MID 69 R_RES_50 1G XCLAWp VIMON MID 76 VCC_B VCCS_LIM_CLAW+_0 XCLAWn MID VIMON VEE_B 77 VCCS_LIM_CLAW-_0 R29 76 VCC_B R_RES_51 1K R30 76 78 R_RES_52 1M R32 VEE_B 77 R_RES_53 1K R33 79 77 R_RES_54 1M C9 79 MID 1F C8 MID 78 1F G8 VCC_CLP MID 78 MID -1M R31 VCC_CLP MID R_RES_55 1K G9 VEE_CLP MID 79 MID -1M R34 MID VEE_CLP R_RES_56 1K XCLAW_AMP VCC_CLP VEE_CLP VOUT_S MID 80 81 CLAMP_AMP_LO_0 R35 VCC_CLP MID R_RES_57 1G R40 VEE_CLP MID R_RES_58 1G R36 80 MID R_RES_59 1 R39 MID 81 R_RES_60 1 R37 80 82 R_RES_61 1M R38 81 83 R_RES_62 1M C10 82 MID 1F C11 MID 83 1F XCLAW_SRC 82 83 CLAW_CLAMP MID VCCS_LIM_3_0 H2 63 MID V11 -1 H3 61 MID V12 1 C19 SW_OL MID 1P R59 84 SW_OL R_RES_63 100 R58 84 MID R_RES_64 1 XOL_SENSE MID 84 62 60 OL_SENSE_0 S1 37 38 SW_OL MID S_VSWITCH_7 H3_2 85 MID V4 1K S7 VEE OUT VEE OUT S_VSWITCH_8 S6 OUT VCC OUT VCC S_VSWITCH_9 R83 MID 86 R_RES_65 1G R_VOUT_S 86 VOUT_S R_RES_66 100 C_VOUT_S VOUT_S MID 1N E3 86 MID OUT MID 1 C_VIMON VIMON MID 1N R_VIMON 85 VIMON R_RES_67 100 R81 MID 85 R_RES_68 1G R_VCLP 87 VCLP R_RES_69 100 C_VCLP VCLP MID 100P E2 87 MID CL_CLAMP MID 1 R66 MID CL_CLAMP R_RES_70 1K G16 CL_CLAMP MID CLAW_CLAMP MID -1M R65 MID CLAW_CLAMP R_RES_71 1K G15 CLAW_CLAMP MID 26 MID -1M R62 MID VSENSE R_RES_72 1K G12 VSENSE MID CLAMP MID -1M C7 28 MID 1F R28 28 88 R_RES_73 1M R25 MID 89 R_RES_74 1G R26 90 MID R_RES_75 1G R27 MID 88 R_RES_76 1 XVCM_CLAMP 91 MID 88 MID 90 89 VCCS_EXT_LIM_0 E6 MID 0 92 0 1 R109 VEE_B 0 R_RES_77 1 R113 93 VEE_B R_RES_78 1M C35 93 0 1F R112 92 93 R_RES_79 1MEG C34 92 0 100N R108 92 0 R_RES_80 1T R111 94 92 R_RES_81 1MEG C33 94 0 1F R110 VCC_B 94 R_RES_82 1M R107 VCC_B 0 R_RES_83 1 G37 VEE_B 0 VEE 0 -1 G36 VCC_B 0 VCC 0 -1 R21 95 91 R_RES_84 1K G6 91 95 42 40 -1M R10 29 ESDn R_RES_85 1M R9 95 96 R_RES_86 1M R_CMR 59 96 R_RES_87 1K G_CMR 96 59 47 MID -1M C_CMn ESDn MID 1P C_CMp MID ESDp 1P R4 ESDn MID R_RES_88 1T R3 MID ESDp R_RES_89 1T R2 IN- ESDn R_RES_90 10M R1 IN+ ESDp R_RES_91 10M .MODEL R_RES_1 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_2 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_3 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_4 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_5 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_6 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_7 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_8 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_9 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_10 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_11 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_12 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_13 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_14 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_15 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_16 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_17 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_18 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_19 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_20 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_21 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_22 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_23 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_24 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_25 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_26 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_27 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_28 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_29 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_30 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_31 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_32 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_33 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_34 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_35 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_36 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_37 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_38 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_39 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_40 RES ( TCE=0 T_ABS=-273.15) .MODEL S_VSWITCH_1 VSWITCH (RON=50 ROFF=1T VON=500M VOFF=450M) .MODEL S_VSWITCH_2 VSWITCH (RON=50 ROFF=1T VON=500M VOFF=450M) .MODEL S_VSWITCH_3 VSWITCH (RON=50 ROFF=1T VON=500M VOFF=450M) .MODEL S_VSWITCH_4 VSWITCH (RON=50 ROFF=1T VON=500M VOFF=450M) .MODEL R_RES_41 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_42 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_43 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_44 RES ( TCE=0 T_ABS=-273.15) .MODEL S_VSWITCH_5 VSWITCH (RON=10M ROFF=1G VON=10M VOFF=0) .MODEL S_VSWITCH_6 VSWITCH (RON=10M ROFF=1G VON=10M VOFF=0) .MODEL R_RES_45 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_46 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_47 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_48 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_49 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_50 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_51 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_52 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_53 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_54 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_55 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_56 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_57 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_58 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_59 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_60 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_61 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_62 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_63 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_64 RES ( TCE=0 T_ABS=-273.15) .MODEL S_VSWITCH_7 VSWITCH (RON=1M ROFF=1G VON=900M VOFF=800M) .MODEL S_VSWITCH_8 VSWITCH (RON=50 ROFF=1T VON=500M VOFF=450M) .MODEL S_VSWITCH_9 VSWITCH (RON=50 ROFF=1T VON=500M VOFF=450M) .MODEL R_RES_65 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_66 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_67 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_68 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_69 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_70 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_71 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_72 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_73 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_74 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_75 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_76 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_77 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_78 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_79 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_80 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_81 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_82 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_83 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_84 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_85 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_86 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_87 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_88 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_89 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_90 RES ( TCE=0 T_ABS=-273.15) .MODEL R_RES_91 RES ( TCE=0 T_ABS=-273.15) .ENDS OPA2992 * FEMT - INPUT CURRENT NOISE IN FA/RT-HZ .SUBCKT FEMT_0 1 2 * INPUT VARIABLES * SET UP 1/F NOISE * FLWF = 1/F FREQUENCY IN HZ .PARAM FLWF=1E-3 * NLFF = CURRENT NOISE DENSITY AT 1/F FREQUENCY IN FA/RT(HZ) .PARAM NLFF=60 * SET UP BROADBAND NOISE * NVRF = BROADBAND CURRENT NOISE DENSITY IN FA/RT(HZ) .PARAM NVRF=60 * CALCULATED VALUES .PARAM GLFF={PWR(FLWF,0.25)*NLFF/1164} .PARAM RNVF={1.184*PWR(NVRF,2)} .MODEL DVNF D KF={PWR(FLWF,0.5)/1E11} IS=1.0E-16 * CIRCUIT CONNECTIONS I1 0 7 10E-3 I2 0 8 10E-3 D1 7 0 DVNF D2 8 0 DVNF E1 3 6 7 8 {GLFF} R1 3 0 1E9 R2 3 0 1E9 R3 3 6 1E9 E2 6 4 5 0 10 R4 5 0 {RNVF} R5 5 0 {RNVF} R6 3 4 1E9 R7 4 0 1E9 G1 1 2 3 4 1E-6 .ENDS * VNSE - INPUT VOLTAGE NOISE IN NV/RT-HZ .SUBCKT VNSE_0 1 2 * INPUT VARIABLES * SET UP 1/F NOISE * FLW = 1/F FREQUENCY IN HZ .PARAM FLW=10 * NLF = VOLTAGE NOISE DENSITY AT 1/F FREQUENCY IN NV/RT(HZ) .PARAM NLF=64.13 * SET UP BROADBAND NOISE * NVR = BROADBAND VOLTAGE NOISE DENSITY IN NV/RT(HZ) .PARAM NVR=4 * CALCULATED VALUES .PARAM GLF={PWR(FLW,0.25)*NLF/1164} .PARAM RNV={1.184*PWR(NVR,2)} .MODEL DVN D KF={PWR(FLW,0.5)/1E11} IS=1.0E-16 * CIRCUIT CONNECTIONS I1 0 7 10E-3 I2 0 8 10E-3 D1 7 0 DVN D2 8 0 DVN E1 3 6 7 8 {GLF} R1 3 0 1E9 R2 3 0 1E9 R3 3 6 1E9 E2 6 4 5 0 10 R4 5 0 {RNV} R5 5 0 {RNV} R6 3 4 1E9 R7 4 0 1E9 E3 1 2 3 4 1 .ENDS * VOLTAGE-CONTROLLED CURRENT SOURCE WITH LIMITS - AOL SECOND STAGE .SUBCKT VCCS_LIM_2_0 VC+ VC- IOUT+ IOUT- .PARAM GAIN = 1.26E-1 .PARAM IPOS = 6.64 .PARAM INEG = -5.9 G1 IOUT+ IOUT- VALUE={LIMIT(GAIN*V(VC+,VC-),INEG,IPOS)} .ENDS * VOLTAGE-CONTROLLED CURRENT SOURCE WITH LIMITS - AOL FIRST STAGE .SUBCKT VCCS_LIM_1_0 VC+ VC- IOUT+ IOUT- .PARAM GAIN = 1E-4 .PARAM IPOS = .5 .PARAM INEG = -.5 G1 IOUT+ IOUT- VALUE={LIMIT(GAIN*V(VC+,VC-),INEG,IPOS)} .ENDS * VOLTAGE-CONTROLLED CURRENT SOURCE WITH LIMITS - ZO OUTPUT .SUBCKT VCCS_LIM_ZO_0 VC+ VC- IOUT+ IOUT- .PARAM GAIN = 1 .PARAM IPOS = 2E3 .PARAM INEG = -2E3 G1 IOUT+ IOUT- VALUE={LIMIT(GAIN*V(VC+,VC-),INEG,IPOS)} .ENDS * CLAMP AMP - OVERLOAD AND GROSS CLAMP .SUBCKT CLAMP_AMP_HI_0 VC+ VC- VIN COM VO+ VO- * PINS CLAMP V+ CLAMP V- VIN COM VOUT+ VOUT- .PARAM G=10 * OUTPUT G(COM,0) WHEN CONDITION NOT MET GVO+ COM VO+ VALUE = {IF(V(VIN,COM)>V(VC+,COM),((V(VIN,COM)-V(VC+,COM))*G),0)} GVO- COM VO- VALUE = {IF(V(VIN,COM)V(VC+,COM),((V(VIN,COM)-V(VC+,COM))*G),0)} GVO- COM VO- VALUE = {IF(V(VIN,COM)10E-3 | V(OLP,COM)>10E-3),1,0)} .ENDS * VOLTAGE-CONTROLLED CURRENT SOURCE WITH EXTERNAL LIMITS - VCM CLAMP .SUBCKT VCCS_EXT_LIM_0 VIN+ VIN- IOUT- IOUT+ VP+ VP- .PARAM GAIN = 1 G1 IOUT+ IOUT- VALUE={LIMIT(GAIN*V(VIN+,VIN-),V(VP-,VIN-), V(VP+,VIN-))} .ENDS .END