* MAX4131 MACROMODEL * ------------------------------ * Revision 0, 05/2009 * ------------------------------ * MAX4131 is a Wide-bandwidth, Low-power, single-supply, Rail-to-rail I/O OpAmp with Shutdown feature. * ------------------------------ *Note: ** Macro model is developed using the typical device parameters given in the data sheet with 5 volts power supply. Model does not take care of the device non-linearity with temperature variations. Model characteristics may not match actual device behavior at abnormal operating conditions. ** Parameters which are not modeled: * 1. Noise parameters * 2. settling time * * Connections * 1 = N.C * 2 = IN- * 3 = IN+ * 4 = VEE * 5 = N.C * 6 = OUT * 7 = Vcc * 8 = SHDN_ **************** .subckt MAX4131 1 2 3 4 5 6 7 8 C_MAX4131_Ccm MAX4131_N97988200 MAX4131_N9805877 16m X_MAX4131_M3 MAX4131_VO MAX4131_N9798762 4 4 nmosmacro_str X_MAX4131_M2 MAX4131_VO MAX4131_N9800056 4 4 nmosmacro_str E_MAX4131_EH MAX4131_N9798778 4 VINT MAX4131_N97995561 1E5 D_MAX4131_D3 MAX4131_VGBW MAX4131_N9799460 diodemacro_ideal G_MAX4131_G1 MAX4131_N9800198 MAX4131_N9800132 MAX4131_SHDN 4 10E-3 V_MAX4131_VL MAX4131_N97995141 4 2.7Vdc R_MAX4131_Ri+ MAX4131_VCM 3 250k R_MAX4131_Rcm 4 MAX4131_N9805877 1Meg D_MAX4131_Ds3 MAX4131_VGBW VINT diodemacro_ideal D_MAX4131_D4 MAX4131_N9799352 MAX4131_VGBW diodemacro_ideal X_MAX4131_Hs2 MAX4131_N9799112 MAX4131_VO MAX4131_N9798516 MAX4131_N9799162 + MAX4131_MAX4131_Hs2 C_MAX4131_Cpm 4 MAX4131_N9798418 8.462nF D_MAX4131_Ds1 MAX4131_VO MAX4131_N9798566 diodemacro_ideal C_MAX4131_Cst 4 MAX4131_N9798312 1n X_MAX4131_FLq MAX4131_N9798854 6 4 7 MAX4131_MAX4131_FLq I_MAX4131_Ib- 2 4 DC 44nA D_MAX4131_Ds4 4 MAX4131_VGBW diodemacro_ideal R_MAX4131_Rps2 4 MAX4131_N9798934 100k I_MAX4131_Ib+ 3 4 DC 56nA V_MAX4131_VicL MAX4131_N97999781 4 -0.25Vdc I_MAX4131_Ilkg MAX4131_N9798854 4 DC 0.1uA G_MAX4131_Gpm MAX4131_N9798418 4 MAX4131_VGBW 4 -1 G_MAX4131_Gcm2 MAX4131_VM 4 MAX4131_N9805877 4 -12.5893E-8 R_MAX4131_Rpm 4 MAX4131_N9798418 1 L_MAX4131_Lps MAX4131_N9798934 4 1.5916mH D_MAX4131_Ds2 MAX4131_N9798516 MAX4131_VO diodemacro_ideal E_MAX4131_Est2 VINT 4 MAX4131_N9798312 4 1 V_MAX4131_VH MAX4131_N97995561 4 6.5Vdc D_MAX4131_D5 MAX4131_VSH MAX4131_N9800198 diodemacro_ideal G_MAX4131_Gps1 MAX4131_N9798608 4 MAX4131_N9799646 4 -1 D_MAX4131_D6 MAX4131_N9800132 MAX4131_VSH diodemacro_ideal V_MAX4131_Vs2 MAX4131_N9799162 4 19.725mVdc I_MAX4131_Iq 7 4 DC 0.7826mA G_MAX4131_Gps2 MAX4131_VM 4 MAX4131_N9798608 4 -10E-8 E_MAX4131_EicH MAX4131_N9800096 4 MAX4131_VCM MAX4131_N98001681 1E5 R_MAX4131_Ro 4 MAX4131_VO 3k G_MAX4131_Gst MAX4131_N9798312 4 7 4 -1E-3 V_MAX4131_V1 MAX4131_N9817323 4 0.8V D_MAX4131_CO1_D2 4 MAX4131_SHDN diodemacro_mostideal G_MAX4131_CO1_G1 MAX4131_SHDN 4 8 MAX4131_N9817323 -1E6 D_MAX4131_CO1_D1 MAX4131_SHDN VINT diodemacro_mostideal I_MAX4131_Isr MAX4131_N9799460 MAX4131_N9799352 DC 63.662mA V_MAX4131_Voff MAX4131_N9798406 2 -0.2mV R_MAX4131_Rps1 MAX4131_N9798934 MAX4131_N9798608 1 G_MAX4131_Gg MAX4131_VM 4 3 MAX4131_N9798406 -1E-2 V_MAX4131_VicH MAX4131_N98001681 VINT -0.25Vdc R_MAX4131_R1 8 VINT 10Meg G_MAX4131_G2 7 4 MAX4131_N9832263 4 -148.52E-6 X_MAX4131_M1 MAX4131_VO MAX4131_N9800096 4 4 nmosmacro_str G_MAX4131_Go MAX4131_VO 4 MAX4131_N9798418 4 -3.333E-2 R_MAX4131_Rg 4 MAX4131_VM 258.703k D_MAX4131_Dst MAX4131_N9798312 MAX4131_N9800844 diodemacro_ideal D_MAX4131_D7 MAX4131_N9798854 MAX4131_N9800198 diodemacro_ideal E_MAX4131_EicL MAX4131_N9800056 4 MAX4131_VCM MAX4131_N97999781 -1E5 G_MAX4131_GQ 7 4 VINT MAX4131_N9832263 43.47826E-6 C_MAX4131_Cgbw 4 MAX4131_VGBW 15.916nF V_MAX4131_Vs1 MAX4131_N97990280 MAX4131_N9798566 11.371mVdc D_MAX4131_D8 MAX4131_N9800132 MAX4131_N9798854 diodemacro_ideal R_MAX4131_Ri- 2 MAX4131_VCM 250k E_MAX4131_EL MAX4131_N9798762 4 VINT MAX4131_N97995141 -1E5 C_MAX4131_Cps VINT MAX4131_N9799646 16m D_MAX4131_D1 MAX4131_VM MAX4131_N9799460 diodemacro_ideal X_MAX4131_M4 MAX4131_VO MAX4131_N9798778 4 4 nmosmacro_str E_MAX4131_E1 MAX4131_N9832263 4 VINT MAX4131_SHDN 1 E_MAX4131_Ecm MAX4131_N97988200 4 MAX4131_VCM 4 1 R_MAX4131_Rps 4 MAX4131_N9799646 1k X_MAX4131_Hs1 MAX4131_N9799112 MAX4131_VSH VINT MAX4131_N97990280 + MAX4131_MAX4131_Hs1 D_MAX4131_D2 MAX4131_N9799352 MAX4131_VM diodemacro_ideal E_MAX4131_Est1 MAX4131_N9800844 4 7 4 1 ****************** .model diodemacro_ideal d(n=0.001) .model diodemacro_mostideal d(IS=1E-12 N=0.000001 BV=35 IBV=1) .ends MAX4131 ****************** .subckt MAX4131_MAX4131_Hs2 1 2 3 4 H_MAX4131_Hs2 3 4 VH_MAX4131_Hs2 11.0816 VH_MAX4131_Hs2 1 2 0V .ends MAX4131_MAX4131_Hs2 .subckt MAX4131_MAX4131_FLq 1 2 3 4 F_MAX4131_FLq 3 4 VF_MAX4131_FLq -1 VF_MAX4131_FLq 1 2 0V .ends MAX4131_MAX4131_FLq .subckt MAX4131_MAX4131_Hs1 1 2 3 4 H_MAX4131_Hs1 3 4 VH_MAX4131_Hs1 25.291 VH_MAX4131_Hs1 1 2 0V .ends MAX4131_MAX4131_Hs1 ****************** .subckt nmosmacro_str d g s b m1 d g s b nmos .model nmos nmos(VTO=0.5 KP=100E-6 w=100u l=1u) .ends ****************** * Copyright (c) 2003-2012 Maxim Integrated Products. 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