* Z:\tmp\asc_dec_bjh7r6w2\0e6f85ddbacd_Four_Quadrant_Log_Antilog_Multiplier_dec0.asc
* Generated by LTspice 26.0.1 for Windows.
R18 N003 N002 10k
V1 vcc 0 15
R21 N027 N022 10k
R16 N011 N001 10k
V5 N024 0 -2
R4 N008 logout2 10k
R23 N019 N018 10k
XU7 0 N028 vcc vee N026 level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
R11 N031 N030 1k
V2 vee 0 -15
R5 N013 N009 1k
R15 N002 N001 10k
XU2 0 N016 vcc vee logout2 level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
XU5 0 N023 vcc vee N021 level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
M4 N035 v1neg N034 N034 PMOS
R3 N008 logout1 10k
XU3 0 N008 vcc vee N014 level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
Q1 N004 N004 logout1 0 NPN
V4 N006 0 1
M10 N037 v1neg N039 N039 NMOS
R1 N004 N005 1k
.model NPN NPN
.model PNP PNP
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.bjt
.model NMOS NMOS
.model PMOS PMOS
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.mos
* Library below included based on ModelFile attribute of instance XU7, XU2, XU5, XU3 (C:\users\khalils\AppData\Local\LTspice\lib\sym\OpAmps\UniversalOpAmp2.asy)
.lib UniversalOpAmp2.lib
.backanno
.end

* LTspice schematic (.asc):
Version 4.1
SHEET 1 2128 1748
WIRE 1392 -1312 1344 -1312
WIRE 1520 -1312 1472 -1312
WIRE 1344 -1232 1344 -1312
WIRE 1472 -1232 1472 -1312
WIRE -1600 -1152 -1776 -1152
WIRE -1360 -1152 -1520 -1152
WIRE -1264 -1152 -1360 -1152
WIRE -1136 -1152 -1184 -1152
WIRE -992 -1152 -1136 -1152
WIRE 1344 -1104 1344 -1152
WIRE 1472 -1104 1472 -1152
WIRE 64 -1008 0 -1008
WIRE 208 -1008 160 -1008
WIRE -1360 -960 -1360 -1152
WIRE 0 -944 0 -1008
WIRE 112 -944 0 -944
WIRE -1776 -880 -1776 -1152
WIRE -1776 -880 -1968 -880
WIRE -1776 -848 -1776 -880
WIRE -1680 -848 -1776 -848
WIRE -1136 -848 -1136 -1152
WIRE 208 -848 208 -1008
WIRE -176 -832 -848 -832
WIRE 0 -832 0 -944
WIRE 0 -832 -96 -832
WIRE -1968 -768 -1968 -800
WIRE -1968 -768 -2208 -768
WIRE 112 -768 112 -816
WIRE -1968 -752 -1968 -768
WIRE 0 -752 0 -832
WIRE 80 -752 0 -752
WIRE -1520 -736 -1520 -800
WIRE -1360 -736 -1360 -832
WIRE 208 -736 208 -848
WIRE 208 -736 144 -736
WIRE 288 -736 208 -736
WIRE 544 -736 368 -736
WIRE 80 -720 16 -720
WIRE 16 -704 16 -720
WIRE 1648 -656 1504 -656
WIRE -1968 -624 -1968 -672
WIRE 112 -624 112 -704
WIRE 1584 -608 1584 -624
WIRE -1680 -544 -1680 -848
WIRE -1600 -544 -1680 -544
WIRE -1360 -544 -1360 -672
WIRE -1360 -544 -1520 -544
WIRE -1136 -544 -1360 -544
WIRE 1584 -544 1584 -608
WIRE 832 -528 832 -592
WIRE 1552 -528 1504 -528
WIRE 544 -512 544 -736
WIRE 640 -512 544 -512
WIRE 656 -512 656 -704
WIRE 656 -512 640 -512
WIRE 800 -512 656 -512
WIRE 1728 -512 1728 -656
WIRE 1728 -512 1616 -512
WIRE 2016 -512 1728 -512
WIRE 976 -496 976 -704
WIRE 976 -496 864 -496
WIRE 1104 -496 976 -496
WIRE 1552 -496 1504 -496
WIRE 800 -480 736 -480
WIRE 736 -432 736 -480
WIRE 0 -416 0 -496
WIRE 112 -416 112 -432
WIRE 112 -416 0 -416
WIRE 832 -400 832 -464
WIRE 864 -400 832 -400
WIRE 1584 -368 1584 -480
WIRE 208 -336 208 -496
WIRE 0 -320 0 -416
WIRE 0 -320 -96 -320
WIRE 640 -320 640 -512
WIRE 1008 -320 640 -320
WIRE -1328 -304 -1488 -304
WIRE -1232 -304 -1328 -304
WIRE -1104 -304 -1152 -304
WIRE -960 -304 -1104 -304
WIRE 112 -256 112 -304
WIRE 0 -240 0 -320
WIRE 80 -240 0 -240
WIRE 208 -224 208 -336
WIRE 208 -224 144 -224
WIRE 288 -224 208 -224
WIRE 544 -224 544 -512
WIRE 544 -224 368 -224
WIRE 80 -208 16 -208
WIRE 16 -192 16 -208
WIRE 528 -128 432 -128
WIRE 848 -128 624 -128
WIRE -1328 -112 -1328 -304
WIRE 112 -112 112 -192
WIRE 176 -112 112 -112
WIRE 576 -48 576 -64
WIRE 848 -48 848 -128
WIRE 848 -48 576 -48
WIRE -1744 -32 -1744 -304
WIRE -1744 -32 -1936 -32
WIRE 704 -32 704 -112
WIRE 672 -16 480 -16
WIRE -1744 0 -1744 -32
WIRE -1648 0 -1744 0
WIRE -1104 0 -1104 -304
WIRE 432 0 432 -128
WIRE 848 0 848 -48
WIRE 848 0 736 0
WIRE 896 0 848 0
WIRE 1008 0 1008 -320
WIRE 672 16 608 16
WIRE -1936 80 -1936 48
WIRE -1936 80 -2176 80
WIRE -1936 96 -1936 80
WIRE -1488 112 -1488 48
WIRE -1328 112 -1328 16
WIRE 608 112 608 16
WIRE 704 144 704 32
WIRE -1936 224 -1936 176
WIRE 736 272 528 272
WIRE 640 288 576 288
WIRE -1648 304 -1648 0
WIRE -1568 304 -1648 304
WIRE -1328 304 -1328 176
WIRE -1328 304 -1488 304
WIRE -1104 304 -1328 304
WIRE 576 352 576 288
WIRE 448 368 448 272
WIRE 448 368 384 368
WIRE 544 368 448 368
WIRE 736 384 736 272
WIRE 736 384 608 384
WIRE 848 384 736 384
WIRE 544 400 480 400
WIRE 480 432 480 400
WIRE 576 464 576 416
WIRE 640 464 576 464
WIRE 1440 528 1344 528
WIRE 736 560 736 384
WIRE 736 560 576 560
WIRE 528 576 448 576
WIRE 1344 592 1344 528
WIRE 1424 720 1424 688
WIRE 1216 736 1072 736
WIRE 1344 736 1344 672
WIRE 1344 736 1296 736
WIRE 1392 736 1344 736
WIRE 448 752 448 576
WIRE 1600 752 1456 752
WIRE 1392 768 1376 768
WIRE -976 832 -976 704
WIRE 1376 832 1376 768
WIRE 1376 832 1216 832
WIRE 1424 832 1424 784
WIRE -1024 848 -1136 848
WIRE 1216 896 1216 832
WIRE 1376 896 1376 832
WIRE 1488 896 1376 896
WIRE -976 992 -976 928
WIRE -1024 1008 -1136 1008
WIRE -288 1040 -288 976
WIRE -288 1168 -288 1136
WIRE -288 1168 -480 1168
WIRE -176 1168 -288 1168
WIRE 240 1168 -176 1168
WIRE -976 1200 -976 1088
WIRE -176 1232 -176 1168
WIRE -80 1312 -128 1312
WIRE -176 1424 -176 1328
SYMBOL res -1168 -1168 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R18
SYMATTR Value 10k
SYMBOL voltage 1344 -1248 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL res -1472 288 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R21
SYMATTR Value 10k
SYMBOL res -1504 -560 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R16
SYMATTR Value 10k
SYMBOL voltage -1936 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value -2
SYMBOL res 384 -240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res -1136 -320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R23
SYMATTR Value 10k
SYMBOL OpAmps\\UniversalOpAmp2 576 384 R0
SYMATTR InstName U7
SYMBOL res 1312 720 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 1k
SYMBOL voltage 1472 -1248 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value -15
SYMBOL res 1744 -672 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL res -1504 -1168 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R15
SYMATTR Value 10k
SYMBOL OpAmps\\UniversalOpAmp2 112 -224 R0
SYMATTR InstName U2
SYMBOL OpAmps\\UniversalOpAmp2 704 0 R0
SYMATTR InstName U5
SYMBOL pmos -1024 928 M180
SYMATTR InstName M4
SYMBOL res 384 -752 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL OpAmps\\UniversalOpAmp2 832 -496 R0
SYMATTR InstName U3
SYMBOL npn 64 -944 R270
SYMATTR InstName Q1
SYMBOL voltage -1968 -768 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 1
SYMBOL nmos -128 1232 M0
SYMATTR InstName M10
SYMBOL res -80 -848 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1k
FLAG 16 -704 0
FLAG 1344 -1104 0
FLAG 1472 -1104 0
FLAG 1392 -1312 vcc
FLAG 1520 -1312 vee
FLAG 112 -816 vcc
FLAG 16 -192 0
FLAG 112 -304 vcc
FLAG 176 -112 vee
FLAG 832 -592 vcc
FLAG 864 -400 vee
FLAG 1584 -608 vcc
FLAG 208 -848 logout1
FLAG 208 -336 logout2
FLAG 736 -432 0
FLAG 704 -112 vcc
FLAG 704 144 vee
FLAG 608 112 0
FLAG 640 464 vee
FLAG 640 288 vcc
FLAG 480 432 0
FLAG 1440 528 negprod
FLAG 1424 688 vee
FLAG 1424 832 vcc
FLAG -1136 848 v1neg
FLAG -80 1312 v1neg
FLAG -1136 1008 v2neg
FLAG -1968 -624 0
FLAG -1520 -736 vee
FLAG -1936 224 0
FLAG -1488 112 vee