* AD8276 SPICE Macro-model * Description: Amplifier * Generic Desc: iPolar, DiffAmp, Low Cost,low power, G=1 * Developed by: * Revision History: 08/10/2012 - Updated to new header style * 1.0 (12/2009) * Copyright 2012 by Analog Devices, Inc. * * Refer to http://www.analog.com/Analog_Root/static/techSupport/designTools/spiceModels/license/spice_general.html for License Statement. Use of this model * indicates your acceptance of the terms and provisions in the License Statement. * * BEGIN Notes: * * Not Modeled: * * Parameters modeled include: * END Notes * * Node assignments +IN -IN Vcc Vee Out Ref Sense *$ .subckt AD8276 Pin Nin Vcc Vee out Ref Sense *** Internal Resistors R63 Pin 1 Rideal 4.00E+04 R62 Nin 2 Rideal 4.00E+04 R61 Ref 1 Rideal 4.00E+04 R65 Sense 2 Rideal 4.00E+04 ***Differential Stage Q1 13 12 14 npn Q2 17 2 16 npn Rc1 98 13 Rideal 4.200E+00 Rc2 98 17 Rideal 4.200E+00 Re1 14 15 Rideal 4.148E+00 Re2 15 16 Rideal 4.148E+00 Ibias 15 51 1.00E+00 Dcmlim1 18 15 DQUIET Vcmlim1 18 51 -0.074 ***Voltage Noise Generation HVnoise 9 7 Vvnoise 1 VVnoise 501 0 0 DVnoise 501 0 Dvnoise RVnoise 501 0 3.37959E-06 ***Current Noise Generation on +IN FInoise1 12 0 VInoise1 1 VInoise1 502 0 0 DInoise1 502 0 DInoise1 RInoise1 502 0 287500 ***Current Noise Generation on -IN FInoise2 2 0 VInoise2 1 VInoise2 503 0 0 DInoise2 503 0 DInoise2 RInoise2 503 0 287500 ***Common Mode Injection Rcm1 1 601 Rideal 100Meg Rcm2 2 601 Rideal 100Meg Gcmr 0 602 601 75 1.00E-06 Rcmr1 602 603 Rideal 1Meg Rcmr2 603 604 Rideal 3.162E+01 Lcmr 604 0 1.007E-03 Ecmr 10 9 603 0 1.000E+00 ***Positive Power Supply Rejection Epsr1 700 0 98 0 1 Rpsr1 700 701 Rideal 1.00E+02 Rpsr2 701 702 Rideal 1.000E-03 Lpsr1 702 0 3.979E-06 Epsr2 11 10 701 0 1 ***Negative Power Supply Rejection Epsr3 703 0 51 0 1 Rpsr3 703 704 Rideal 1.00E+02 Rpsr4 704 705 Rideal 1.000E-03 Lpsr2 705 0 5.305E-07 Epsr4 12 11 704 0 1 ***Input Offset and Bias Vos 1 7 1.000E-04 Ios 1 2 0.000E+00 ***Input Impedance Cinv 2 0 6.00E-13 Cninv 1 0 6.00E-13 ***1st Gain and Slew limiting Gslew 0 101 17 13 1.0000E+00 Rslew 101 0 Rideal 2.50E+02 Dslew1 101 102 DZENER Dslew2 0 102 DZENER ***Second Gain and Dominant Pole with Output Voltage Limiting Gp1 51 201 101 0 4.173E-08 Rp1 201 51 Rideal 3.032E+13 Cp1 201 51 1.50E-12 Vlim1 97 206 0.35 Dlim1 201 206 dquiet Vlim2 207 52 0.35 Dlim2 207 201 dquiet Esupref1 97 98 51 0 1 Esupref2 52 51 51 0 1 ***Second Pole Gp2 0 202 201 51 1.00E-03 Rp2 202 0 Rideal 1.00E+03 Cp2 202 0 3.1831E-11 ***Third Pole Gp3 0 203 202 0 1.00E-03 Rp3 203 0 Rideal 1.00E+03 Cp3 203 0 3.1831E-11 ***Fourth Pole Gp4 0 204 203 0 1.00E-03 Rp4 204 0 Rideal 1.00E+03 Cp4 204 0 1.59155E-16 ***Fifth Pole Gp5 0 205 204 0 1.00E-03 Rp5 205 0 Rideal 1.00E+03 Cp5 205 0 1.592E-16 ***First Zero Gz1 0 301 205 0 1.00E-03 Rz1 301 302 Rideal 1.00E+03 Lz1 302 0 1.061E-04 ***Second Zero Gz2 0 303 301 0 1.00E-03 Rz2 303 304 Rideal 1.00E+03 Lz2 304 0 1.592E-10 ***Third Zero Gz3 0 305 303 0 1.00E-03 Rz3 305 306 Rideal 1.00E+03 Lz3 306 0 1.59E-10 ***Buffer Gbuf 0 401 305 0 1.00E-04 Rbuf 401 0 Rideal 1.00E+04 ***Output with current limiting Eout 404 0 401 0 1.000E+00 Rout 404 405 RIDEAL 1.000E+00 Lout 405 406 1.00E-19 Cout 406 0 5.70E-11 Voutmon 406 4 0 Dout1 401 407 Dquiet Vout1 407 406 -6.150E-01 Dout2 408 401 Dquiet Vout2 406 408 -6.150E-01 Rsmall 4 out 1000 ***Voltage reference generator Eref1 98 0 Vcc 0 1 Eref2 51 0 Vee 0 1 Rref1 98 901 Rideal 100Meg Rref2 901 51 Rideal 100Meg Eref3 75 0 901 0 1 ***Supply current correction Iq Vcc Vee 0.00020 Fsup1 Vcc 0 Voutmon 1 *DZsup1 0 802 DZENER2 *Dsup1 Vcc 802 DQUIET Fsup2 0 Vee Voutmon -1 *DZsup2 804 0 DZENER2 *Dsup2 804 Vee DQUIET ***models .model Rideal res T_ABS=27 .model Rnoise res T_ABS=27 .model npn npn BF= 8333332.33333333 .model dquiet d .model dvnoise d KF=980000 .model dinoise1 d KF=0.000576 .model dinoise2 d KF=0.000576 .model dzener d BV=38.9444143409777 .model dzener2 d BV=50 .ends