Version 4
SHEET 1 1476 988
WIRE -80 -96 -176 -96
WIRE 128 -96 -80 -96
WIRE 480 -96 128 -96
WIRE 640 -96 480 -96
WIRE 736 -96 640 -96
WIRE 832 -96 736 -96
WIRE 1088 -96 832 -96
WIRE 1184 -96 1088 -96
WIRE 480 -64 480 -96
WIRE 640 -64 640 -96
WIRE 128 48 128 -96
WIRE 480 48 480 16
WIRE 640 48 640 16
WIRE 736 48 736 -96
WIRE 0 96 -96 96
WIRE 64 96 0 96
WIRE 560 96 544 96
WIRE 576 96 560 96
WIRE 368 112 272 112
WIRE 272 144 272 112
WIRE 480 176 480 144
WIRE 560 176 560 96
WIRE 560 176 480 176
WIRE 0 208 0 96
WIRE 224 208 0 208
WIRE 368 208 368 112
WIRE 368 208 320 208
WIRE 640 208 640 144
WIRE 640 208 368 208
WIRE 832 208 832 -96
WIRE 480 240 480 176
WIRE -80 256 -80 -96
WIRE -80 256 -192 256
WIRE 640 256 640 208
WIRE 736 256 736 112
WIRE 736 256 640 256
WIRE 768 256 736 256
WIRE 1088 256 1088 -96
WIRE 1184 272 1184 -96
WIRE -80 288 -80 256
WIRE 128 288 128 144
WIRE 416 288 128 288
WIRE 880 304 832 304
WIRE 992 304 960 304
WIRE 1024 304 992 304
WIRE -464 320 -560 320
WIRE -560 336 -560 320
WIRE 128 336 128 288
WIRE 992 336 992 304
WIRE 480 352 480 336
WIRE -192 384 -192 256
WIRE -560 432 -560 416
WIRE 992 432 992 416
WIRE 1088 432 1088 352
WIRE 1088 432 992 432
WIRE 128 448 128 416
WIRE 128 448 32 448
WIRE 224 448 128 448
WIRE 480 448 480 432
WIRE 480 448 336 448
WIRE 32 464 32 448
WIRE 224 464 224 448
WIRE -80 480 -80 368
WIRE 336 480 336 448
WIRE 736 512 736 256
WIRE -560 528 -560 496
WIRE 480 528 480 448
WIRE -192 576 -192 448
WIRE -80 576 -80 544
WIRE -80 576 -192 576
WIRE 32 576 32 544
WIRE 112 576 32 576
WIRE 224 576 224 544
WIRE 336 576 336 544
WIRE 336 576 224 576
WIRE 416 576 336 576
WIRE 32 608 32 576
WIRE 224 608 224 576
WIRE 112 656 112 576
WIRE 112 656 96 656
WIRE 144 656 112 656
WIRE 160 656 144 656
WIRE 640 688 640 256
WIRE -416 704 -432 704
WIRE 144 736 144 656
WIRE 336 736 144 736
WIRE 576 736 416 736
WIRE -432 752 -432 704
WIRE 224 752 224 704
WIRE -432 864 -432 832
WIRE -80 864 -80 576
WIRE -80 864 -160 864
WIRE 32 864 32 704
WIRE 32 864 -80 864
WIRE 224 864 224 832
WIRE 224 864 32 864
WIRE 480 864 480 624
WIRE 480 864 224 864
WIRE 640 864 640 784
WIRE 640 864 480 864
WIRE 736 864 736 576
WIRE 736 864 640 864
WIRE 1088 864 1088 432
WIRE 1088 864 736 864
WIRE 1184 864 1184 336
WIRE 1184 864 1088 864
WIRE -432 880 -432 864
FLAG -176 -96 CATHODE
FLAG -96 96 REF
FLAG -160 864 ANODE
FLAG -560 736 ANODE
FLAG -560 800 0
FLAG -432 960 0
FLAG -432 704 CATHODE
FLAG -560 960 0
FLAG -560 880 t
FLAG -432 864 VCC
FLAG -384 320 CATHODE
FLAG -560 320 REF
FLAG -560 608 0
SYMBOL npn 64 48 R0
SYMATTR InstName Q1
SYMBOL npn 320 144 R90
SYMATTR InstName Q2
SYMBOL npn 96 608 M0
SYMATTR InstName Q3
SYMBOL npn 160 608 R0
SYMATTR InstName Q4
SYMBOL npn 416 240 R0
SYMATTR InstName Q5
SYMBOL npn 416 528 R0
SYMATTR InstName Q6
SYMBOL npn 576 688 R0
SYMATTR InstName Q7
SYMBOL npn 768 208 R0
SYMATTR InstName Q8
SYMBOL pnp 544 144 R180
SYMATTR InstName Q10
SYMBOL pnp 576 144 M180
SYMATTR InstName Q11
SYMBOL res 112 320 R0
SYMATTR InstName R1
SYMATTR Value 3.28k
SYMBOL res 16 448 R0
SYMATTR InstName R2
SYMATTR Value 2.4k
SYMBOL res 208 448 R0
SYMATTR InstName R3
SYMATTR Value 7.2k
SYMBOL res 208 736 R0
SYMATTR InstName R4
SYMATTR Value 800
SYMBOL res 464 -80 R0
SYMATTR InstName R5
SYMATTR Value 800
SYMBOL res 624 -80 R0
SYMATTR InstName R6
SYMATTR Value 800
SYMBOL res 464 336 R0
SYMATTR InstName R7
SYMATTR Value 4k
SYMBOL cap 320 480 R0
SYMATTR InstName C1
SYMATTR Value 20p
SYMBOL res 432 720 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R8
SYMATTR Value 1k
SYMBOL cap 720 48 R0
SYMATTR InstName C2
SYMATTR Value 20p
SYMBOL res 976 288 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R9
SYMATTR Value 150
SYMBOL res 976 320 R0
SYMATTR InstName R10
SYMATTR Value 10k
SYMBOL Misc\\jumper -624 768 R270
SYMATTR InstName X2
SYMBOL voltage -432 864 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5V
SYMBOL res -416 848 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R11
SYMATTR Value {R}
SYMBOL cap -96 480 R0
SYMATTR InstName C3
SYMATTR Value {C}
SYMBOL voltage -560 864 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value {R*C}
SYMBOL npn 1024 256 R0
SYMATTR InstName Q9
SYMBOL diode 752 576 R180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D1
SYMBOL diode 1200 336 R180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D2
SYMBOL voltage -560 512 R0
WINDOW 123 24 132 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value2 AC -1V
SYMATTR InstName V3
SYMATTR Value ""
SYMBOL res -368 304 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R12
SYMATTR Value 100
SYMBOL cap -576 432 R0
SYMATTR InstName C4
SYMATTR Value 1
SYMBOL res -576 320 R0
SYMATTR InstName R13
SYMATTR Value 0.1
SYMBOL res -96 272 R0
SYMATTR InstName R14
SYMATTR Value 10
SYMBOL cap -208 384 R0
SYMATTR InstName C5
SYMATTR Value {Cp}
TEXT -568 -16 Left 0 !;tran 0 {4*R*C} 0
TEXT -568 136 Left 0 ;.step dec param C 0.001u 10u 6
TEXT -568 80 Left 0 ;.step dec param R 100 1k 6
TEXT -568 56 Left 0 !.param R 1k
TEXT -568 160 Left 0 !.param C 0.1u
TEXT -568 216 Left 0 ;.meas tran amplitude PP V(ref)
TEXT -568 16 Left 0 !.ac oct 100 10Hz 10MegHz
TEXT -568 248 Left 0 !.step dec param Cp 0.001u 1u 6