diff --git a/library/Analog.lib b/library/Analog.lib index 04074cb1..3292ea78 100644 --- a/library/Analog.lib +++ b/library/Analog.lib @@ -1969,3 +1969,185 @@ X1 _net0 _net1 _net2 _net3 _net4 _net5 _net6 _net7 _net8 _net9 NE592S + + +AD8221 instrumentation amplifier + + +.Def:Analog_AD8221 _net0 _net1 _net2 _net3 _net4 _net5 _net6 _net7 +Sub:X1 _net0 _net1 _net2 _net3 _net4 _net5 _net6 _net7 gnd Type="AD8221_cir" +.Def:End + + + + +* Node assignments +* non-inverting input +* | inverting input +* | | positive supply +* | | | negative supply +* | | | | output +* | | | | | ref +* | | | | | | rg1 +* | | | | | | | rg2 +* | | | | | | | | +.SUBCKT AD8221 1 2 99 50 46 20 7 8 +* +* INPUT STAGE +* +I1 7 50 5.0005E-6 +I2 8 50 5.0005E-6 +IOS 3 4 0.15E-9 +EIOS 21 3 poly(1) 100 98 39.215m 1 +CCM 3 4 2E-12 +CD1 3 0 2E-12 +CD2 4 0 2E-12 +Q1 5 4 7 QN1 +Q2 6 21 8 QN1 +D1 7 4 DX +D2 8 21 DX +R1 1 3 400 +R2 2 4 400 +R3 99 5 RNOISE 100E3 +R4 99 6 RNOISE 100E3 +R5 7 9 RNOISE 24.7E3 +R6 8 10 RNOISE 24.7E3 +E1 9 46 11 5 375E6 +E2 10 46 11 6 375E6 +V1 99 11 0.5 +RV1 99 11 1E3 +CC1 5 9 4E-12 +CC2 6 10 4E-12 +* +* DIFFERENCE AMPLIFIER AND POLE AT 1MHZ +* +I3 18 50 5E-6 +R7 99 12 RNOISE 19.099E3 +R8 99 15 RNOISE 19.099E3 +R9 14 18 RNOISE 8.754E3 +R10 17 18 RNOISE 8.754E3 +R11 9 13 RNOISE 10E3 +R12 13 46 RNOISE 10E3 +Q3 12 13 14 QN2 +Q4 15 16 17 QN2 +R13 19 16 RNOISE 10E3 +R14 16 20 RNOISE 10E3 +C1 12 15 2.083E-12 +Eoos 19 10 poly(1) 38 98 200e-6 10 +EREF 98 0 POLY(2) 99 0 50 0 0 0.5 0.5 +D3 13 51 DX +D4 16 52 DX +V2 99 51 0.7 +V3 99 52 0.7 +D15 53 13 DX +D16 54 16 DX +V12 53 50 0.7 +V13 54 50 0.7 +* +* GAIN STAGE AND DOMINANT POLE AT 0.667HZ +* +R16 25 98 RNOISE 57.296E9 +C2 25 98 4.167E-12 +G1 98 25 12 15 52.360E-6 +V6 99 26 1.53 +V7 27 50 1.33 +D7 25 26 DX +D8 27 25 DX +* +* POLE AT 10MHZ +* +R17 40 98 1 +C3 40 98 15.916E-9 +G2 98 40 25 98 1 +* +* COMMON MODE STAGE WITH ZERO AT 100HZ +* +E3 36 98 POLY(2) 1 98 2 98 0 0.5 0.5 +R18 36 38 RNOISE 1E6 +R19 38 98 1 +C5 36 38 30e-12 +* +* OUTPUT STAGE +* +GSY 99 50 POLY(1) 99 50 0.7725E-3 3.125E-6 +RO1 99 45 250 +RO2 45 50 250 +L1 45 46 1E-6 +GO1 45 99 99 40 4E-3 +GO2 50 45 40 50 4E-3 +GC1 43 50 40 45 4E-3 +GC2 44 50 45 40 4E-3 +F1 45 0 V4 1 +F2 0 45 V5 1 +V4 41 45 1.65 +V5 45 42 1.65 +D9 50 43 DY +D10 50 44 DY +D11 99 43 DX +D12 99 44 DX +D13 40 41 DX +D14 42 40 DX +* +*Voltage Noise Stage +* +rnoise1 309 98 2.5e-6 +vnoise1 309 98 0 +vnoise2 101 98 0.75 +dnoise1 101 309 dn +fnoise1 100 98 vnoise1 1 +rnoise2 100 98 1 + +* Iq + +Iq1 99 0 -0.4mA +Iq2 0 50 .047ma + +* MODELS USED +* +.MODEL DX D(IS=1E-12) +.MODEL DY D(IS=1E-12 BV=50) +.MODEL QN1 NPN(BF=10E3 KF=0.7E-15 AF=1) +.MODEL QN2 NPN(BF=250 KF=0.5E-14 AF=1) +.MODEL RNOISE RES(t_abs=-373) +.model dn d(kf=1e-18,af=1) +.ENDS AD8221 + + + + +.SUBCKT Analog_AD8221 gnd _net0 _net1 _net2 _net3 _net4 _net5 _net6 _net7 +X1 _net0 _net1 _net2 _net3 _net4 _net5 _net6 _net7 AD8221 +.ENDS + + + + + + + + + + + + + + + + + + + + + + <.ID 40 -86 SUB> + <.PortSym -70 -60 1 0 P1> + <.PortSym -70 50 2 0 P2> + <.PortSym -20 -90 3 0 P99> + <.PortSym -20 80 4 0 P50> + <.PortSym 120 0 5 0 P46> + <.PortSym 30 80 6 0 P20> + <.PortSym -70 -30 7 0 P7> + <.PortSym -70 20 8 0 P8> + + +