* MAX4250 MACROMODEL * ------------------------------ * Revision 0, 11/2008 * ------------------------------ * The MAX4250 low-noise, low-distortion operational amplifier offer rail-to-rail outputs and single supply operation down to 2.4V. * ------------------------------ *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 & Harmonic distortion * ------------------------------ * Connections * 1 = OUT * 2 = VSS * 3 = IN+ * 4 = IN- * 5 = VDD **************** .subckt MAX4250 1 2 3 4 5 ***Iq Variation with Vdd & Load*** I_Iq 5 2 DC 3.700000e-004 G_GQ 5 2 VINT 2 1.000000e-005 X_FLq N9753217 1 2 5 OpAmp_FLq ***Vdd Range*** X_M3 VO N9753121 2 2 nmosmacro X_M4 VO N9753137 2 2 nmosmacro E_EL N9753121 2 VINT N97538991 -1E5 E_EH N9753137 2 VINT N97539451 1E5 V_VL N97538991 2 2.400000e+000 V_VH N97539451 2 5.500000e+000 *** Power-up Delay Time *** C_Cst 2 N9752795 1n D_Dst N9752795 N9755113 diodemacro G_Gst N9752795 2 5 2 -1.666667e-004 E_Est1 N9755113 2 5 2 1 E_Est2 VINT 2 N9752795 2 1 ***Input Parameters*** I_Ib+ 3 2 DC 1.500000e-012 I_Ib- 4 2 DC 5.000000e-013 R_Ri+ VCM 3 5.000000e+011 R_Ri- 4 VCM 5.000000e+011 V_Voff N9752739 4 -7.000000e-005 ***ICMR*** X_M1 VO N9754397 2 2 nmosmacro X_M2 VO N9754361 2 2 nmosmacro E_EicL N9754361 2 VCM N97542791 -5E6 E_EicH N9754397 2 VCM N97544611 1E5 V_VicL N97542791 2 -2.000000e-001 V_VicH N97544611 VINT -1.100000e+000 *** GBW Product & Slew Rate *** G_Gg VM 2 3 N9752739 -1 R_Rg 2 VM 6.748121e+005 C_Cgbw 2 VGBW 5.305165e-008 D_D1 VM N9753845 diodemacro D_D2 N9753721 VM diodemacro I_Isr N9753845 N9753721 DC 1.591549e-002 D_D3 VGBW N9753845 diodemacro D_D4 N9753721 VGBW diodemacro *** Phase Margin *** G_Gpm N9752755 2 VGBW 2 -1 R_Rpm 2 N9752755 1 C_Cpm 2 N9752755 1.521232e-008 *** PSRR *** C_Cps VINT N9754047 16m L_Lps N9753297 2 1.591496e-003 R_Rps 2 N9754047 1k R_Rps1 N9753297 N9752963 1 R_Rps2 2 N9753297 2.999900e+004 G_Gps1 N9752963 2 N9754047 2 -1.000000e-005 G_Gps2 VM 2 N9752963 2 -1 *** CMRR *** E_Ecm N97531790 2 VCM 2 1 C_Ccm N97531790 N9793192 16m L_Lcm N9794564 2 1.432394e-009 R_Rcm 2 N9793192 1Meg R_Rcm1 N9794564 N9793623 1 R_Rcm2 2 N9794564 9.000000e+000 G_Gcm1 N9793623 2 N9793192 2 -1.778279e-006 G_Gcm2 VM 2 N9793623 2 -1 *** O/P Stage *** G_Go VO 2 N9752755 2 -1.438742e-003 R_Ro 2 VO 6.950514e+002 V_Vs1 N97533970 N9752921 8.998068e-005 V_Vs2 N9753531 2 2.474883e-003 D_Ds1 VO N9752921 diodemacro D_Ds2 N9752867 VO diodemacro X_Hs1 N9753481 VSH VINT N97533970 OpAmp_Hs1 X_Hs2 N9753481 VO N9752867 N9753531 OpAmp_Hs2 D_D5 VSH N9754491 diodemacro D_D6 N9754425 VSH diodemacro I_Ish N9754491 N9754425 DC 6.800000e-002 D_D7 N9753217 N9754491 diodemacro D_D8 N9754425 N9753217 diodemacro *********** .model diodemacro d(n=0.001) .ENDS MAX4250 ******************* .subckt OpAmp_Hs1 1 2 3 4 H_Hs1 3 4 VH_Hs1 3.174165e+001 VH_Hs1 1 2 0V .ends OpAmp_Hs1 .subckt OpAmp_Hs2 1 2 3 4 H_Hs2 3 4 VH_Hs2 1.815129e+001 VH_Hs2 1 2 0V .ends OpAmp_Hs2 .subckt OpAmp_FLq 1 2 3 4 F_FLq 3 4 VF_FLq -1 VF_FLq 1 2 0V .ends OpAmp_FLq *********** .subckt nmosmacro d g s b m1 d g s b nmos .model nmos nmos(VTO=0.5 KP=100E-6 w=20u l=1u) .ends ******************* * Copyright (c) 2003-2012 Maxim Integrated Products. All Rights Reserved.