* Z:\tmp\asc_dec_bjh7r6w2\0cdd8fb1f6bc__ad534_dec1.asc
* Generated by LTspice 26.0.1 for Windows.
R3 N003 N002 8k
R2 Zener N029 18k7
R30 N022 N028 8k
R5 N031 N036 10k6
G1 0 Out N004 N001 100
R29 N028 N027 77k9
Q8 N025 N029 N033 0 NPN
V1 Zener N039 7.7
Q15 N004 N005 N008 0 NPN
R17 N016 0 10k
R26 N035 N038 10k6
Q1 N029 N029 SF 0 NPN 2
V- 0 V- {Vs}
Q14 N001 N006 N008 0 NPN
C1 Out 0 100n Rser=30m Rpar=35
Q13 N004 N006 N007 0 NPN
Q19 N010 N017 N022 0 NPN
Q5 N012 N015 N019 0 NPN
R13 N005 N012 0k5
R6 N032 N036 10k6
.model NPN NPN
.model PNP PNP
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.bjt
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 1640 936
WIRE 496 -128 256 -128
WIRE 800 -128 496 -128
WIRE -384 -96 -512 -96
WIRE -224 -96 -304 -96
WIRE -144 -96 -224 -96
WIRE 16 -96 -144 -96
WIRE 96 -96 16 -96
WIRE 576 -96 336 -96
WIRE 768 -96 576 -96
WIRE 1040 -96 1024 -96
WIRE 1136 -96 1120 -96
WIRE 1216 -96 1136 -96
WIRE 1264 -96 1216 -96
WIRE -144 -80 -144 -96
WIRE 16 -80 16 -96
WIRE 256 -80 256 -128
WIRE 336 -80 336 -96
WIRE 496 -80 496 -128
WIRE 576 -80 576 -96
WIRE 1136 -48 1136 -96
WIRE -224 -32 -224 -96
WIRE -208 -32 -224 -32
WIRE 96 -32 96 -96
WIRE 96 -32 80 -32
WIRE 192 -32 176 -32
WIRE 416 -32 400 -32
WIRE 432 -32 416 -32
WIRE 656 -32 640 -32
WIRE 800 -32 800 -128
WIRE 1024 -32 800 -32
WIRE 1088 -32 1024 -32
WIRE 768 0 768 -96
WIRE 1056 0 768 0
WIRE 336 16 256 16
WIRE 576 16 496 16
WIRE 1088 16 1056 0
WIRE -144 32 -144 16
WIRE 416 32 416 -32
WIRE 416 32 -144 32
WIRE 896 48 864 48
WIRE 928 48 896 48
WIRE 1136 48 1136 32
WIRE 1136 48 1120 48
WIRE 1152 48 1136 48
WIRE 1216 48 1216 -96
WIRE 16 64 16 16
WIRE 176 64 176 -32
WIRE 176 64 16 64
WIRE 656 64 656 -32
WIRE 656 64 176 64
WIRE 768 64 768 0
WIRE 864 64 864 48
WIRE 928 64 928 48
WIRE 1024 64 1024 -32
WIRE -144 80 -144 32
WIRE 16 80 16 64
WIRE 336 80 336 16
WIRE 496 80 496 16
WIRE 768 160 768 144
WIRE 816 160 768 160
WIRE 864 160 864 144
WIRE 864 160 816 160
WIRE 928 160 928 144
WIRE 976 160 928 160
WIRE 1024 160 1024 144
WIRE 1024 160 976 160
WIRE -144 176 -144 160
WIRE 16 176 16 160
WIRE 336 176 336 160
WIRE 816 176 816 160
WIRE 976 176 976 160
WIRE -208 224 -224 224
WIRE 96 224 80 224
WIRE 272 224 256 224
WIRE 1056 224 1040 224
WIRE -224 272 -224 224
WIRE 96 272 96 224
WIRE 256 272 256 224
WIRE 1056 272 1056 224
WIRE -144 288 -144 272
WIRE 16 288 16 272
WIRE 336 288 336 272
WIRE 816 288 816 272
WIRE 976 288 976 272
WIRE -416 304 -464 304
WIRE -384 304 -416 304
WIRE -464 336 -464 304
WIRE -384 336 -384 304
WIRE -256 384 -272 384
WIRE -224 384 -224 352
WIRE -224 384 -256 384
WIRE -144 384 -144 368
WIRE -96 384 -144 384
WIRE 16 384 16 368
WIRE 16 384 -16 384
WIRE 96 384 96 352
WIRE 128 384 96 384
WIRE 144 384 128 384
WIRE 224 384 208 384
WIRE 256 384 256 352
WIRE 256 384 224 384
WIRE 336 384 336 368
WIRE 384 384 336 384
WIRE 496 384 464 384
WIRE 816 384 816 368
WIRE 864 384 816 384
WIRE 976 384 976 368
WIRE 976 384 944 384
WIRE 1056 384 1056 352
WIRE 1088 384 1056 384
WIRE 1104 384 1088 384
WIRE -144 400 -144 384
WIRE 16 400 16 384
WIRE 336 400 336 384
WIRE 816 400 816 384
WIRE 976 400 976 384
WIRE -384 448 -384 416
WIRE -288 448 -384 448
WIRE -208 448 -288 448
WIRE 80 448 -208 448
WIRE 272 448 80 448
WIRE 560 448 272 448
WIRE 1040 448 752 448
WIRE -384 464 -384 448
WIRE -288 512 -288 448
WIRE -288 512 -320 512
WIRE -144 512 -144 496
WIRE 16 512 16 496
WIRE 336 512 336 496
WIRE 816 512 816 496
WIRE 976 512 976 496
WIRE -384 560 -512 560
WIRE -384 592 -384 560
WIRE -144 608 -144 592
WIRE -64 608 -144 608
WIRE 16 608 16 592
WIRE 16 608 -64 608
WIRE 336 608 336 592
WIRE 816 608 816 592
WIRE 896 608 816 608
WIRE 976 608 976 592
WIRE 976 608 896 608
WIRE -64 624 -64 608
WIRE 896 624 896 608
WIRE -464 720 -464 416
WIRE 416 720 416 704
WIRE 416 720 -64 720
WIRE 896 720 416 720
WIRE 1216 752 1216 48
WIRE 272 832 256 832
WIRE 368 832 352 832
WIRE 384 832 368 832
WIRE 480 832 464 832
WIRE 368 864 368 832
SYMBOL res -288 -112 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 8k
SYMBOL res -400 320 R0
SYMATTR InstName R2
SYMATTR Value 18k7
SYMBOL res 960 272 R0
SYMATTR InstName R30
SYMATTR Value 8k
SYMBOL res -160 496 R0
SYMATTR InstName R5
SYMATTR Value 10k6
SYMBOL g2 1136 -64 R0
WINDOW 0 32 32 Left 0
WINDOW 3 25 0 Left 0
SYMATTR InstName G1
SYMATTR Value 100
SYMBOL res 960 368 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R29
SYMATTR Value 77k9
SYMBOL npn 272 400 R0
SYMATTR InstName Q8
SYMBOL voltage -464 320 M0
SYMATTR InstName V1
SYMATTR Value 7.7
SYMBOL npn 640 -80 M0
SYMATTR InstName Q15
SYMBOL res 240 256 R0
SYMATTR InstName R17
SYMATTR Value 10k
SYMBOL res 960 496 R0
SYMATTR InstName R26
SYMATTR Value 10k6
SYMBOL npn -320 464 M0
SYMATTR InstName Q1
SYMATTR Value NPN 2
SYMBOL voltage 368 832 R90
WINDOW 0 -32 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName V-
SYMATTR Value {Vs}
SYMBOL npn 432 -80 R0
SYMATTR InstName Q14
SYMBOL cap 1216 32 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
WINDOW 39 32 -32 Center 0
SYMATTR InstName C1
SYMATTR Value 100n
SYMATTR SpiceLine Rser=30m Rpar=35
SYMBOL npn 400 -80 M0
SYMATTR InstName Q13
SYMBOL npn 1040 176 M0
SYMATTR InstName Q19
SYMBOL npn 80 176 M0
SYMATTR InstName Q5
SYMBOL res 0 64 R0
SYMATTR InstName R13
SYMATTR Value 0k5
SYMBOL res 0 496 R0
SYMATTR InstName R6
SYMATTR Value 10k6
FLAG -256 384 X1
FLAG 128 384 X2
FLAG 224 384 Y1
FLAG 1088 384 Z2
FLAG 1264 -96 Out
FLAG 208 384 0
FLAG 144 384 0
FLAG 368 864 0
FLAG 480 832 V+
FLAG 256 832 V-
FLAG -512 560 SF
FLAG 1120 48 0
FLAG 896 48 V+
FLAG 1024 -96 0
FLAG -416 304 Zener