* SPICE netlist
D1 N015 N006 DP
I1 N006 N015 PULSE(100u 120u 1u 10n 10n 272n 543n 5)
Rsh N006 N015 1G
V1 N001 0 3.3
R1 N002 N006 10k
R2 N003 N015 8k2
R3 N015 0 8k2
R4 N003 N014 1k5
R5 N007 0 560R
Q1 N014 N015 N007 0 2N3904
Q2 N007 N014 N003 0 2N3906
C1 N007 N006 1n
C2 N016 N007 100p
R6 N016 0 6k8
R7 N004 N016 15k
C3 N002 0 100n
Q3 N010 N016 N022 0 2N3904
R8 N004 N010 2k7
R9 N022 0 1k
C4 N022 0 1n
C5 N011 N010 100n
R10 N004 N011 6k8
R11 N011 0 15k
Q4 N017 N011 N008 0 2N3906
R12 N004 N008 1k
R13 N017 0 2k7
C6 N008 0 1n
C7 N018 N017 100n
R15 N005 N018 100k
R16 N018 0 12k
Q5 N012 N018 0 0 2N3904
Q6 N020 N013 N005 0 2N3906
R17 N005 N013 56k
R18 N013 N012 56k
R20 N020 0 5k6
R21 N021 N020 1k2
R22 N001 N009 100k
R23 N009 0 100k
R25 N019 N021 100k
R26 N003 N002 10k
R27 N001 N003 33R
R14 N001 N004 33R
R28 N001 N005 33R
C8 N003 0 100n
C9 N004 0 100n
C10 N013 0 100p
C11 N005 0 100n
C12 N009 0 100n
C13 N001 0 100n
R19 OUT N019 33R
XU2 N021 N009 N001 0 N019 LTC6702 ;pnba In+)In-)V+)GND)OUT
.options plotwinsize=0
.tran 0 10u 0 1n
;ac dec 1000 1k 100e6

* LTspice schematic (.asc)
Version 4
SHEET 1 3296 752
WIRE -960 -376 -1648 -376
WIRE -128 -376 -960 -376
WIRE 640 -376 -128 -376
WIRE 1360 -376 640 -376
WIRE -960 -344 -960 -376
WIRE -128 -344 -128 -376
WIRE 640 -344 640 -376
WIRE -1360 -232 -1552 -232
WIRE -1232 -232 -1360 -232
WIRE -1040 -232 -1152 -232
WIRE -960 -232 -960 -264
WIRE -960 -232 -1040 -232
WIRE -896 -232 -960 -232
WIRE -768 -232 -896 -232
WIRE -624 -232 -768 -232
WIRE -400 -232 -464 -232
WIRE -256 -232 -400 -232
WIRE -128 -232 -128 -264
WIRE -128 -232 -256 -232
WIRE -32 -232 -128 -232
WIRE 112 -232 -32 -232
WIRE 640 -232 640 -264
WIRE 640 -232 448 -232
WIRE 752 -232 640 -232
WIRE 880 -232 752 -232
WIRE 944 -232 880 -232
WIRE 1360 -232 1360 -376
WIRE 1360 -232 1200 -232
WIRE 1424 -232 1360 -232
WIRE -1552 -200 -1552 -232
WIRE -1360 -200 -1360 -232
WIRE -896 -200 -896 -232
WIRE -624 -200 -624 -232
WIRE -464 -200 -464 -232
WIRE -256 -200 -256 -232
WIRE 112 -200 112 -232
WIRE 944 -200 944 -232
WIRE 1200 -200 1200 -232
WIRE 1424 -200 1424 -232
WIRE 752 -152 752 -232
WIRE -32 -120 -32 -232
WIRE -1552 -104 -1552 -136
WIRE -624 -104 -624 -136
WIRE -464 -104 -464 -136
WIRE 944 -104 944 -136
WIRE 1424 -104 1424 -136
WIRE -1360 -88 -1360 -120
WIRE -1168 -88 -1360 -88
WIRE -656 -88 -1104 -88
WIRE 112 -88 112 -120
WIRE 256 -88 112 -88
WIRE 1200 -88 1200 -120
WIRE 1200 -88 1104 -88
WIRE 1296 -88 1200 -88
WIRE -1360 -56 -1360 -88
WIRE -1360 -56 -1424 -56
WIRE -1296 -56 -1360 -56
WIRE 112 -56 112 -88
WIRE 256 -56 256 -88
WIRE 880 -56 880 -232
WIRE 1104 -56 1104 -88
WIRE 1200 -56 1200 -88
WIRE -768 -40 -768 -232
WIRE -1648 -24 -1648 -376
WIRE -1424 -24 -1424 -56
WIRE -1360 -24 -1360 -56
WIRE -1296 -24 -1296 -56
WIRE -400 -24 -400 -232
WIRE -256 -8 -256 -120
WIRE -160 -8 -256 -8
WIRE -32 -8 -32 -40
WIRE -32 -8 -96 -8
WIRE 48 -8 -32 -8
WIRE 448 -8 448 -232
WIRE 640 -8 608 -8
WIRE 752 -8 752 -72
WIRE 752 -8 720 -8
WIRE 816 -8 752 -8
WIRE -1040 8 -1040 -232
WIRE -896 8 -896 -120
WIRE -832 8 -896 8
WIRE -32 24 -32 -8
WIRE -256 40 -256 -8
WIRE 256 40 256 8
WIRE 608 56 608 -8
WIRE 752 56 752 -8
WIRE 1104 56 1104 8
WIRE 1120 56 1104 56
WIRE 1200 56 1200 24
WIRE -896 72 -896 8
WIRE 1360 72 1360 -232
WIRE -1424 88 -1424 56
WIRE -1360 88 -1360 40
WIRE -1360 88 -1424 88
WIRE -1296 88 -1296 56
WIRE -1296 88 -1360 88
WIRE -768 88 -768 56
WIRE -656 88 -656 -88
WIRE -656 88 -768 88
WIRE -576 88 -656 88
WIRE -400 88 -400 56
WIRE -400 88 -512 88
WIRE -320 88 -400 88
WIRE 112 104 112 40
WIRE 288 104 112 104
WIRE 448 104 448 72
WIRE 448 104 352 104
WIRE 544 104 448 104
WIRE 1296 104 1296 -88
WIRE 1328 104 1296 104
WIRE -1360 120 -1360 88
WIRE -1040 120 -1040 88
WIRE -1040 120 -1360 120
WIRE -960 120 -1040 120
WIRE -400 120 -400 88
WIRE 1472 120 1408 120
WIRE 1504 120 1472 120
WIRE 1648 120 1584 120
WIRE 448 136 448 104
WIRE 880 136 880 40
WIRE 960 136 880 136
WIRE 1296 136 1040 136
WIRE 1328 136 1296 136
WIRE -1040 152 -1040 120
WIRE -896 200 -896 168
WIRE -832 200 -896 200
WIRE -768 200 -768 88
WIRE -768 200 -832 200
WIRE -256 200 -256 136
WIRE -256 200 -304 200
WIRE -208 200 -256 200
WIRE 1360 200 1360 168
WIRE -832 232 -832 200
WIRE -304 232 -304 200
WIRE -208 232 -208 200
WIRE 112 232 112 104
WIRE 880 232 880 136
WIRE 1296 280 1296 136
WIRE 1344 280 1296 280
WIRE 1472 280 1472 120
WIRE 1472 280 1424 280
WIRE -1648 344 -1648 56
WIRE -1040 344 -1040 232
WIRE -1040 344 -1648 344
WIRE -832 344 -832 312
WIRE -832 344 -1040 344
WIRE -400 344 -400 200
WIRE -400 344 -832 344
WIRE -304 344 -304 312
WIRE -304 344 -400 344
WIRE -208 344 -208 296
WIRE -208 344 -304 344
WIRE -32 344 -32 104
WIRE -32 344 -208 344
WIRE 112 344 112 312
WIRE 112 344 -32 344
WIRE 448 344 448 216
WIRE 448 344 112 344
WIRE 608 344 608 152
WIRE 608 344 448 344
WIRE 752 344 752 120
WIRE 752 344 608 344
WIRE 880 344 880 312
WIRE 880 344 752 344
WIRE -1648 376 -1648 344
FLAG 1648 120 OUT
IOPIN 2656 384 Out
FLAG -1552 -104 0
FLAG -1648 376 0
FLAG -624 -104 0
FLAG -464 -104 0
FLAG 256 40 0
FLAG 944 -104 0
FLAG 1360 200 0
FLAG 1200 56 0
FLAG 1104 56 0
FLAG 1424 -104 0
SYMBOL diode -1376 40 M180
SYMATTR InstName D1
SYMATTR Value DP
SYMBOL current -1424 -24 R0
SYMATTR Value PULSE(100u 120u 1u 10n 10n 272n 543n 5)
SYMATTR InstName I1
SYMBOL res -1312 -40 R0
SYMATTR InstName Rsh
SYMATTR Value 1G
SYMBOL voltage -1648 -40 R0
SYMATTR InstName V1
SYMATTR Value 3.3
SYMBOL res -1376 -216 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res -1056 -8 R0
SYMATTR InstName R2
SYMATTR Value 8k2
SYMBOL res -1056 136 R0
SYMATTR InstName R3
SYMATTR Value 8k2
SYMBOL res -912 -216 R0
SYMATTR InstName R4
SYMATTR Value 1k5
SYMBOL res -848 216 R0
SYMATTR InstName R5
SYMATTR Value 560R
SYMBOL npn -960 72 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL pnp -832 56 M180
SYMATTR InstName Q2
SYMATTR Value 2N3906
SYMBOL cap -1104 -104 R90
SYMATTR InstName C1
SYMATTR Value 1n
SYMBOL cap -512 72 R90
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL res -416 104 R0
SYMATTR InstName R6
SYMATTR Value 6k8
SYMBOL res -416 -40 R0
SYMATTR InstName R7
SYMATTR Value 15k
SYMBOL cap -1568 -200 R0
SYMATTR InstName C3
SYMATTR Value 100n
SYMBOL npn -320 40 R0
SYMATTR InstName Q3
SYMATTR Value 2N3904
SYMBOL res -272 -216 R0
SYMATTR InstName R8
SYMATTR Value 2k7
SYMBOL res -320 216 R0
SYMATTR InstName R9
SYMATTR Value 1k
SYMBOL cap -224 232 R0
SYMATTR InstName C4
SYMATTR Value 1n
SYMBOL cap -96 -24 R90
SYMATTR InstName C5
SYMATTR Value 100n
SYMBOL res -48 -136 R0
SYMATTR InstName R10
SYMATTR Value 6k8
SYMBOL res -48 8 R0
SYMATTR InstName R11
SYMATTR Value 15k
SYMBOL pnp 48 40 M180
SYMATTR InstName Q4
SYMATTR Value 2N3906
SYMBOL res 96 -216 R0
SYMATTR InstName R12
SYMATTR Value 1k
SYMBOL res 96 216 R0
SYMATTR InstName R13
SYMATTR Value 2k7
SYMBOL cap 240 -56 R0
SYMATTR InstName C6
SYMATTR Value 1n
SYMBOL cap 352 88 R90
SYMATTR InstName C7
SYMATTR Value 100n
SYMBOL res 432 -24 R0
SYMATTR InstName R15
SYMATTR Value 100k
SYMBOL res 432 120 R0
SYMATTR InstName R16
SYMATTR Value 12k
SYMBOL npn 544 56 R0
SYMATTR InstName Q5
SYMATTR Value 2N3904
SYMBOL pnp 816 40 M180
SYMATTR InstName Q6
SYMATTR Value 2N3906
SYMBOL res 736 -168 R0
SYMATTR InstName R17
SYMATTR Value 56k
SYMBOL res 736 -24 R90
SYMATTR InstName R18
SYMATTR Value 56k
SYMBOL res 864 216 R0
SYMATTR InstName R20
SYMATTR Value 5k6
SYMBOL res 1056 120 R90
SYMATTR InstName R21
SYMATTR Value 1k2
SYMBOL res 1184 -216 R0
SYMATTR InstName R22
SYMATTR Value 100k
SYMBOL res 1184 -72 R0
SYMATTR InstName R23
SYMATTR Value 100k
SYMBOL res 1440 264 R90
SYMATTR InstName R25
SYMATTR Value 100k
SYMBOL res -1136 -248 R90
SYMATTR InstName R26
SYMATTR Value 10k
SYMBOL res -976 -360 R0
SYMATTR InstName R27
SYMATTR Value 33R
SYMBOL res -144 -360 R0
SYMATTR InstName R14
SYMATTR Value 33R
SYMBOL res 624 -360 R0
SYMATTR InstName R28
SYMATTR Value 33R
SYMBOL cap -640 -200 R0
SYMATTR InstName C8
SYMATTR Value 100n
SYMBOL cap -480 -200 R0
SYMATTR InstName C9
SYMATTR Value 100n
SYMBOL cap 736 56 R0
SYMATTR InstName C10
SYMATTR Value 100p
SYMBOL cap 928 -200 R0
SYMATTR InstName C11
SYMATTR Value 100n
SYMBOL cap 1088 -56 R0
SYMATTR InstName C12
SYMATTR Value 100n
SYMBOL cap 1408 -200 R0
SYMATTR InstName C13
SYMATTR Value 100n
SYMBOL res 1600 104 R90
SYMATTR InstName R19
SYMATTR Value 33R
SYMBOL Comparators\\LTC6702 1360 120 R0
SYMATTR InstName U2