* MAX9940 MACROMODEL * ------------------------------ * Revision 0, 03/2009 * ------------------------------ * The MAX9940 signal-line overvoltage protector for low-voltage digital communication ports provides protection against high-volage faults and ESD strikes. * ------------------------------ *Note: ** Macro model is developed using the typical device parameters given in the data sheet with 3.3 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. * ------------------------------ * Connections * 1 = Vcc * 2 = GND * 3 = N.C * 4 = INT * 5 = EXT **************** .subckt MAX9940 1 2 3 4 5 M_MAX9940_M4 MAX9940_N12522598 MAX9940_N12540500 MAX9940_N12511047 + MAX9940_N125614063 PCHJ L=10u W=800u E_MAX9940_E10 MAX9940_N125129722 MAX9940_N12517431 MAX9940_N12512984 2 + 0.026 R_MAX9940_R14 MAX9940_N125192820 MAX9940_N12530428 1k E_MAX9940_EicH MAX9940_N12530304 2 1 MAX9940_N125303281 1E2 G_MAX9940_G6 1 2 VC5 2 2.6E-6 I_MAX9940_I2 4 2 DC 2nA D_MAX9940_D17 2 MAX9940_N12522598 diodemacro_nonideal C_MAX9940_C3 MAX9940_N12511047 MAX9940_N12522598 38pF V_MAX9940_VicH MAX9940_N125303281 2 5.5V R_MAX9940_R2 MAX9940_N12522598 5 1m V_MAX9940_V11 MAX9940_N12517431 VDD 0.13V D_MAX9940_D18 MAX9940_N12511047 MAX9940_N12522598 diodemacro_nonideal D_MAX9940_CO1_D2 2 MAX9940_N12544008 diodemacro_mostideal G_MAX9940_CO1_G1 MAX9940_N12544008 2 MAX9940_N125129722 5 -1E6 D_MAX9940_CO1_D1 MAX9940_N12544008 VC5 diodemacro_mostideal C_MAX9940_C8 2 MAX9940_N12551091 1n G_MAX9940_G2 MAX9940_N12514734 2 MAX9940_N12514802 2 -2E-6 V_MAX9940_V55 MAX9940_N125192820 2 5V I_MAX9940_I3 5 2 DC 1nA R_MAX9940_R12 MAX9940_N125520611 MAX9940_N12513024 100 D_MAX9940_D13 MAX9940_N125528091 MAX9940_N12551091 diodemacro_ideal C_MAX9940_C2 2 MAX9940_N12514734 1n R_MAX9940_R13 MAX9940_N125528091 MAX9940_N12513024 140 V_MAX9940_VicL MAX9940_N125302841 2 2.2V V_MAX9940_V56 MAX9940_N12674711 2 5V D_MAX9940_D14 MAX9940_N12551091 MAX9940_N125520611 diodemacro_ideal E_MAX9940_E1 VDD 2 MAX9940_N12514734 2 1 E_MAX9940_E12 VC5 2 MAX9940_N12530428 2 1 D_MAX9940_D15 MAX9940_N125613783 MAX9940_N12511047 diodemacro_ideal G_MAX9940_G3 4 2 MAX9940_N12544008 2 0.5996E-6 D_MAX9940_D11 MAX9940_N12514734 MAX9940_N12514802 diodemacro_ideal D_MAX9940_D16 MAX9940_N12522598 MAX9940_N125614063 diodemacro_ideal M_MAX9940_M11 MAX9940_N12530428 MAX9940_N12530304 2 2 NJNT L=1u W=2u E_MAX9940_E13 MAX9940_N12540500 2 MAX9940_N12674711 MAX9940_N12551091 7 G_MAX9940_G4 5 2 VC5 2 68.2E-6 D_MAX9940_D12 2 MAX9940_N12514734 diodemacro_ideal M_MAX9940_M14 MAX9940_N12530428 MAX9940_N12530300 2 2 NJNT L=1u W=2u G_MAX9940_G5 5 2 MAX9940_N12544008 2 -67.6E-6 E_MAX9940_E14 MAX9940_N12513024 2 MAX9940_N12544008 2 1 E_MAX9940_E2P1 MAX9940_N12539340 2 POLY(2) 1 2 MAX9940_N12551091 2 0 0 + 0 0 0.2 C_MAX9940_C7 2 4 27pF R_MAX9940_R11 MAX9940_N12544008 MAX9940_N12512984 0.01 E_MAX9940_EicL MAX9940_N12530300 2 1 MAX9940_N125302841 -100 E_MAX9940_E2 MAX9940_N12514802 2 1 2 1 M_MAX9940_M3 MAX9940_N12511047 MAX9940_N12539340 MAX9940_N12522598 + MAX9940_N125613783 NCHJ L=10u W=600u C_MAX9940_C6 MAX9940_N12512984 2 1n R_MAX9940_R1 4 MAX9940_N12511047 1m ****************** .model diodemacro_ideal d(n=0.001) .model diodemacro_mostideal d(IS=1E-12 N=0.000001 BV=35 IBV=1) .model diodemacro_nonideal d(IS=1n RS=0.001 N=1.77 CJO=0.1p BV=600 IBV=1) .model NCHJ nmos(VTO=0.5 KP=100E-6) .model PCHJ pmos(VTO=-0.5 KP=50E-6) .model NJNT nmos(VTO=0.5 KP=50E-2) .ends MAX9940 ****************** * Copyright (c) 2003-2012 Maxim Integrated Products. All Rights Reserved.