* SPICE netlist
V1 +V 0 15
LT3a N001 0 25
LT3b 0 N012 25
LT3c N002 0 25
R1 N002 0 500
R2 N003 N002 25K
LT1b 0 N024 100
LT1c N032 0 100
LT1a 0 N026 100
JQ1 N024 N006 N028 2N4416
JQ2 N032 N009 N028 2N4416
JQ3 N024 N009 0 2N4416
JQ4 N032 N006 0 2N4416
V2 -V 0 -15
I1 0 IN PULSE(0 1000p 1m 1u 1u 5m 10m)
R3 N033 IN 100G
C1 N033 IN .015p
LT2a N007 IN 50
LT2b IN N008 50
LT2c 0 N011 50
C2 0 N002 4n
C3 N020 N013 1000p IC=0
XU1 0 N013 +V -V OUT LT1001 ;pnba In+)In-)V+)V-)OUT
JQ5 N018 0 N011 2N4416
Q6 +V N018 N022 0 2N3904
R4 N022 -V 4.99K
C4 N023 N022 .01
R5 N023 0 1K
Q7 N016 N023 N029 0 2N3904
R6 N029 -V 4.75K
C5 N029 0 .01
R7 +V N016 2.5K
Q8 N019 N016 N015 0 2N3906
R8 +V N015 1.98K
C6 N015 0 .01
R9 N031 -V 4.22K
Q9 +V N019 N021 0 2N3904
C7 0 N011 2n
R10 +V N018 1.2K
Q10 -V N031 N030 0 2N3906
D1 N019 N027 1N4148
D2 N027 N031 1N4148
R11 N021 N025 49.9
R12 N025 N030 49.9
C8 N026 P001 .1
R13 N036 IN 10Meg
C9 N036 IN 2.5p
R14 N037 IN 1Meg
R15 N038 IN 100K
C10 N037 IN 75p
C11 N038 IN 100p
C12 N017 N013 .05 IC=0
C13 N014 N013 .1 IC=0
J3 N012 N007 N012 2N5432
J1 N007 N001 N007 2N5432
J4 N008 N012 N008 2N5432
J2 N001 N008 N001 2N5432
R16 OUT IN 10G
C14 OUT IN .04p
C15 OUT N013 25p IC=0
C16 IN 0 100p
R17 N034 IN 1G
C17 N034 IN .2p
R18 N035 IN 100Meg
C18 N035 IN .4p
R19 N039 IN 10K
C19 N039 IN 50p
C20 0 N026 1n
A1 N006 0 N010 0 0 N006 N009 0 DFLOP Vhigh=0 Vlow=-5 Trise=10n
V3 N010 0 pulse(-5 0 0 10n 10n .5u 1u)
C21 N013 0 .01
R20 N013 N028 100
R21 P001 N025 500
C22 N005 0 1n
R22 N006 N005 100
C23 N004 0 500p
R23 N005 N004 200
C24 N003 0 250p
R24 N004 N003 400
.tran 15m
K3 T3a T3b T3c 1.
K1 T1a T1b T1c 1.
K2 T2a T2b T2c 1.

* LTspice schematic (.asc)
Version 4
SHEET 1 2480 1856
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FLAG -952 -928 IN
FLAG 184 -128 0
FLAG 1048 -752 0
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FLAG -56 -768 0
SYMBOL voltage 216 -592 R0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL ind2 -472 -912 R0
SYMATTR InstName T3a
SYMATTR Value 25
SYMATTR Type ind
SYMBOL ind2 -472 -800 R0
SYMATTR InstName T3b
SYMATTR Value 25
SYMATTR Type ind
SYMBOL ind2 -392 -864 M0
SYMATTR InstName T3c
SYMATTR Value 25
SYMATTR Type ind
SYMBOL res -328 -864 R0
SYMATTR InstName R1
SYMATTR Value 500
SYMBOL res -72 -880 R90
SYMATTR InstName R2
SYMATTR Value 25K
SYMBOL ind2 360 -192 R180
SYMATTR InstName T1b
SYMATTR Value 100
SYMATTR Type ind
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SYMATTR InstName T1c
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SYMATTR Type ind
SYMBOL ind2 280 -128 M180
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SYMATTR Type ind
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SYMATTR InstName Q1
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SYMATTR InstName Q2
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SYMBOL njf 488 -288 M0
SYMATTR InstName Q3
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SYMBOL njf 488 -64 R180
SYMATTR InstName Q4
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SYMATTR Value PULSE(0 1000p 1m 1u 1u 5m 10m)
SYMBOL res -760 64 R90
SYMATTR InstName R3
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SYMBOL cap -776 -48 R90
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SYMATTR Type ind
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SYMATTR Value 50
SYMATTR Type ind
SYMBOL cap -216 -768 M180
SYMATTR InstName C2
SYMATTR Value 4n
SYMBOL cap 968 -368 R90
SYMATTR InstName C3
SYMATTR Value 1000p
SYMATTR Value2 IC=0
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SYMATTR InstName U1
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SYMATTR InstName Q5
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SYMATTR Value 10Meg
SYMBOL cap -776 400 R90
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SYMBOL res -520 576 R90
SYMATTR InstName R14
SYMATTR Value 1Meg
SYMBOL res -760 736 R90
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SYMBOL cap -536 688 R90
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SYMBOL cap 904 -464 R90
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SYMATTR Value2 IC=0
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SYMBOL cap -536 240 R90
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SYMATTR Value2 IC=0
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SYMATTR Value 100Meg
SYMBOL cap -536 464 R90
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SYMBOL res -520 800 R90
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SYMATTR Value 10K
SYMBOL cap -536 912 R90
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SYMBOL cap 168 -160 M180
SYMATTR InstName C20
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SYMBOL Digital\\dflop 712 -848 M0
SYMATTR InstName A1
SYMATTR Value Vhigh=0 Vlow=-5
SYMATTR Value2 Trise=10n
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SYMBOL cap 88 -848 R0
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SYMATTR InstName R23
SYMATTR Value 200
SYMBOL cap -72 -848 R0
SYMATTR InstName C24
SYMATTR Value 250p
SYMBOL res 88 -880 R90
SYMATTR InstName R24
SYMATTR Value 400