Version 4
SHEET 1 908 680
WIRE -32 48 -48 48
WIRE 80 48 48 48
WIRE 112 48 80 48
WIRE 192 48 176 48
WIRE 224 48 192 48
WIRE 320 48 304 48
WIRE 80 96 80 48
WIRE 256 128 240 128
WIRE 240 144 240 128
WIRE 192 160 192 48
WIRE 208 160 192 160
WIRE 320 176 320 48
WIRE 320 176 272 176
WIRE 336 176 320 176
WIRE 416 176 400 176
WIRE 528 176 496 176
WIRE 560 176 528 176
WIRE -144 192 -176 192
WIRE -48 192 -64 192
WIRE -16 192 -48 192
WIRE 80 192 80 176
WIRE 80 192 48 192
WIRE 208 192 80 192
WIRE 528 224 528 176
WIRE -48 256 -48 192
WIRE 480 288 448 288
WIRE -96 320 -112 320
WIRE -192 400 -208 400
WIRE -96 400 -112 400
WIRE 16 400 0 400
WIRE 112 400 96 400
WIRE -208 416 -208 400
WIRE -112 416 -112 400
WIRE 0 416 0 400
WIRE 96 416 96 400
FLAG 240 208 0
FLAG 240 128 VCC
FLAG 560 176 OUT
IOPIN 560 176 Out
FLAG -48 48 BIAS
IOPIN -48 48 In
FLAG -112 496 0
FLAG -208 496 0
FLAG -208 400 VCC
FLAG -96 272 0
FLAG -112 320 CLK
IOPIN -112 320 In
FLAG -48 336 0
FLAG 480 240 0
FLAG 448 288 CLK
IOPIN 448 288 In
FLAG 528 304 0
FLAG 0 496 0
FLAG 0 400 BIAS
FLAG -176 192 IN
IOPIN -176 192 In
FLAG -112 400 IN
FLAG 96 496 0
FLAG 96 400 CLK
SYMBOL Opamps\\UniversalOpamp2 240 176 R0
WINDOW 39 -45 73 Left 0
SYMATTR SpiceLine Vos=-5mV
SYMATTR InstName U1
SYMATTR SpiceLine2 ilimit=25m rail=0 phimargin=45 en=0 enk=0 in=0 ink=0 Rin=500Meg
SYMBOL voltage -208 400 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5V
SYMBOL voltage -112 400 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value {Vs}
SYMBOL res 64 80 R0
SYMATTR InstName R1
SYMATTR Value 1Meg
SYMBOL res 64 32 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL sw -48 240 R0
SYMATTR InstName S1
SYMATTR Value PIC_SW
SYMBOL polcap 48 176 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 10u
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=16 Irms=35m Rser=2.8 Lser=0 mfg="Nichicon" pn="UPR1C100MAH" type="Al electrolytic"
SYMBOL polcap 176 32 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value 10u
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=16 Irms=35m Rser=2.8 Lser=0 mfg="Nichicon" pn="UPR1C100MAH" type="Al electrolytic"
SYMBOL res 320 32 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 1Meg
SYMBOL sw 528 208 R0
SYMATTR InstName S2
SYMATTR Value PIC_SW
SYMBOL res -48 176 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL polcap 336 192 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C3
SYMATTR Value 100u
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=6.3 Irms=100m Rser=1.9 Lser=0 mfg="Nichicon" pn="UPR0J101MAH" type="Al electrolytic"
SYMBOL res 512 160 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R5
SYMATTR Value 100
SYMBOL voltage 0 400 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 2.5V
SYMBOL voltage 96 400 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value PULSE(0V 5V 0 1us 1us 4.99ms 10ms)
TEXT -224 544 Left 0 !.tran 0 1s 0.9s
TEXT -224 576 Left 0 !.model PIC_SW SW(Ron=1m Roff=1G Vt=2.5V)
TEXT -224 608 Left 0 !.step param Vs 0V 25mV 1mV
TEXT -224 640 Left 0 !.meas tran ADC MAX V(out)