* MAX953 FAMILY MACROMODELS * ------------------------- * FEATURES: * Op Amp + Comparator * 7uA Typical Supply Current * Comparator and Op Amp Input Range Includes Ground * Outputs Swing Rail to Rail * Internal Comparator Hysteresis * Op Amp Gain Stability 1V/V * Available in 8-Pin DIP/SO/uMAX * * PART NUMBER DESCRIPTION * ___________ ___________________________________ * MAX953 Ultra-Low-Power Op Amp + Comp * * * ////////////// MAX953 MACROMODEL ////////////////// * * ====> REFER TO MAX953 DATA SHEET <==== * * connections: AMPIN+(3) * | AMPIN-(2) COMPIN+(5) * | | | IN-(6) +V(8) -V(4) * | | | | | | * | | | | | | AMPOUT(1) * | | | | | | | COMPOUT(7) .subckt max953 1 2 101 102 300 400 97 197 * *======================= *** VSENSEP 300 3 0V VSENSEN 400 4 0V FSENSEP 300 0 VSENSEP -1 FSENSEN 400 0 VSENSEN -1 ISUPPLY 300 400 5UA ****************INPUT STAGE********************** I1 3 41 50U ISY 3 4 -45U M1 5 2 41 3 MOSFET R3 5 4 5.2696K M2 6 7 41 3 MOSFET R4 6 4 5.2696K CI1 1 0 2P CI2 2 0 2P DP1 1 3 DA DP2 4 1 DA DP3 2 3 DB DP4 4 2 DB ************************ GSUP 0 106 POLY(1) 3 4 320 -41 1.2 *THIS POLY VCCS MODELS THE OPEN LOOP GAIN AS *A FUNCTION OF THE POWER SUPPLY, WHICH WILL BE MULT. NODE 5,6 VOLT. RVSUP 0 106 1E4 ************ GAIN, 1ST POLE, SLEW STAGE************ EH 3 98 3 4 0.5 G0 98 9 5 6 1 *G0 98 9 POLY(2) 5 6 106 0 0 0 0 0 1E-6 *GO MULTIPLIES NODE 106, AVOL VS SUPPLY, AND NODES 5,6 FROM INPUT STAGE. VS 9 10 0V R0 98 9 1E5 C3 10 98 20UF D1 9 139 DX D2 112 9 DX V11 3 139 .5V V12 112 4 .5V ************ I2 3 4 -19U EOS 7 1 POLY(1) 16 98 0 1 *CHANGE OFFSET VOLTAGE TO 0V FOR OPEN-LOOP, OTHERWISE VOS *********COMMON-MODE ZERO STAGE******** G4 98 16 POLY(2) 1 98 2 98 0 1E-7 1E-7 R13 98 16 40 ******* POLE STAGE ********** G3 98 15 10 98 1E-3 R12 98 15 1E3 *C5 98 15 14.5N C5 98 15 3N * CCOMP 97 100 20000nf RCOMP 100 9 100000 *************OUTPUT STAGE**************** F5 3 38 VA8 1 D9 40 38 DX D10 38 3 DX VA7 3 40 0 G12 98 32 15 98 1E-6 * ^ INSERT NODE FROM LAST STAGE HERE R15 98 32 1E6 D3 32 36 DX D4 37 32 DX V5 35 37 .2V V4 36 35 -.2V *V5,V4 SET ISC R16 34 97 1K E1 3 33 3 32 1 VA8 33 34 0V RCON 35 97 15K ****************************************** .MODEL DA D(IS=100E-14 RS=.5K) .MODEL DB D(IS=100E-14 RS=.5K) .MODEL DX D(IS=100E-14) .MODEL MOSFET PMOS(VTO=-1.7 KP=5E-3) *VTO ESTABLISHES INPUT VOLT. RANGE *** ****************** MAX951/2 VOLTAGE REF. * VREF 301 4 1.2V VSHORT 235 302 0V RIN200 301 302 1MEG F226 300 400 VA227 1 F225 3 238 VA228 1 D229 240 238 DX D230 238 3 DX VA227 3 240 0 ***===================== G232 0 232 301 302 1E-3 R235 0 232 1E6 C235 0 232 6800PF D223 232 236 DX2 D224 237 232 DX2 V225 235 237 1.8mV V224 236 235 .9mV R236 234 235 60 E221 3 233 3 232 1 VA228 233 234 0V * ***== MODELS USED ==*** .MODEL DX2 D(IS=1E-15 n=0.001) *.MODEL DX D(IS=1E-15) ***=============================== * * .model qin NPN(Is=800.0E-18 Bf=5E6) .model qmi PNP(Is=800.0E-18 Bf=1002) .model qmo PNP(Is=800.0E-18 Bf=1000 Cjc=1E-15 Tr=6.662E-6) .MODEL PMOS PMOS *(VTO=-1.7 KP=1.8E-3) .model qoc NPN(Is=800.0E-18 Bf=2.069E3 Cjc=1E-15 Tf=25.53E-9 Tr=6.983E-6) dp 4 3 DX rp 3 4 2.041E3 .MODEL DP D(N=0.001) *======================= dp100 4 3 DX rp100 3 4 2.041E3 f201 3 109 v101 1 iee200 107 500 dc 100.0E-6 q201 109 120 107 qin q102 108 121 107 qin q103 109 108 499 qmo q104 108 108 499 qmi VMB100 500 0 0V VPB100 499 3 0V ***================ RIN101 102 123 20K RIN102 101 125 20K *** DCM102 170 3 DP DCM101 4 124 DP VCM101 170 124 1.3V DCM103 4 126 DP VCM102 171 126 1.3V DCM104 171 3 DP *** ***================= EHYST100 123 120 POLY(1) 0 160 0 1 VS102 121 125 0V ***================= e101 110 4 3 109 1 v101 110 111 dc 0 q105 105 111 144 qoc VSHIFT100 144 500 0V R155 499 105 10K DP105 105 3 DP DP106 4 105 DP ***============= Hysterisis section GH100 0 151 197 0 1E-6 RH101 3 51 1E9 RH102 4 51 1E9 DP101 151 152 DP DP102 153 151 DP VP100 152 0 1V VP102 153 0 -1V ***================= GHYST100 155 0 4 0 1E-6 GREF100 0 155 235 4 1E-6 *NODE 235 STAYS SAME FOR BOTH AMPLIFIERS. RREF100 155 0 1E6 DP110 155 156 DP DP120 157 155 DP VP110 156 0 50MV VP120 157 0 0MV *LOGIC OUTPUT, NODE 60 ALTERS THE POLARITY, SO 55 SHOULD ALWAYS BE POS. GMULT100 160 0 POLY(2) 151 0 155 0 0 0 0 0 1E-6 RMULT100 160 0 1E6 *================ VVIRTUAL100 198 0 0V F105 3 138 VA108 1 D109 140 138 DX D110 138 3 DX VA107 3 140 0 F106 300 400 VA107 1 G112 198 132 105 0 7.04E-3 R115 198 132 142 D103 136 141 DX D104 142 137 DX V105 134 136 -.63 V104 137 134 -.65 ****V104,V105 SET ISC R116 141 135 107 R117 142 135 245 E111 3 133 3 132 1 VA108 133 134 0V L100 135 197 10NH *======================== .ends