highpass-capacitor-into-integrator-with-schmitt-trigger-feedback-pretend-stm32h7.asc

Version 4
SHEET 1 2148 680
WIRE 752 16 736 16
WIRE 864 16 832 16
WIRE -528 32 -528 0
WIRE -448 32 -448 0
WIRE -352 32 -352 0
WIRE 512 48 64 48
WIRE 64 64 64 48
WIRE 144 112 128 112
WIRE 240 112 208 112
WIRE 736 112 736 16
WIRE 752 112 736 112
WIRE 864 112 864 16
WIRE 864 112 816 112
WIRE -528 128 -528 112
WIRE -528 128 -544 128
WIRE -448 128 -448 112
WIRE -448 128 -528 128
WIRE -352 128 -352 112
WIRE -352 128 -448 128
WIRE -448 144 -448 128
WIRE -352 144 -352 128
WIRE -16 240 -224 240
WIRE 64 240 64 144
WIRE 64 240 48 240
WIRE 128 240 128 112
WIRE 128 240 64 240
WIRE 144 240 128 240
WIRE 464 240 432 240
WIRE 512 240 512 48
WIRE 512 240 464 240
WIRE 544 240 512 240
WIRE 624 240 608 240
WIRE 736 240 736 112
WIRE 736 240 704 240
WIRE 768 240 736 240
WIRE 240 256 240 112
WIRE 240 256 208 256
WIRE 304 256 240 256
WIRE 368 256 304 256
WIRE 864 256 864 112
WIRE 864 256 832 256
WIRE 960 256 864 256
WIRE -224 272 -224 240
WIRE 144 272 112 272
WIRE 480 272 432 272
WIRE 512 272 480 272
WIRE 768 272 736 272
WIRE 736 320 736 272
FLAG -544 128 0
FLAG -448 0 +3.3v
FLAG -448 224 -3.3v
FLAG -528 0 1.65v
FLAG -224 432 0
FLAG 480 272 s_out-
FLAG 176 224 +3.3v
FLAG 464 240 s_out+
FLAG 304 256 integrated
FLAG 960 256 filtered1_s_out
FLAG 176 288 0
FLAG 112 272 1.65v
FLAG -352 0 +5v
FLAG -352 224 -5v
FLAG 608 176 0
FLAG 800 224 +3.3v
FLAG 800 288 -3.3v
FLAG 736 320 0
SYMBOL voltage -448 16 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 3.3
SYMBOL voltage -448 128 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 3.3
SYMBOL voltage -224 336 R0
WINDOW 3 -236 57 Left 2
WINDOW 123 -16 85 Left 2
WINDOW 39 0 0 Left 0
WINDOW 0 -16 57 Left 2
SYMATTR Value SINE(0 1.414 1k)
SYMATTR InstName V3
SYMBOL voltage -528 16 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 1.65
SYMBOL Digital\\schmitt 368 192 R0
WINDOW 39 -168 113 Left 2
SYMATTR SpiceLine Vt=1.65 Vh=.125 Vhigh=3.3 Vlow=0 Td=100n
SYMATTR InstName A1
SYMBOL res 80 160 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 20k
SYMBOL OpAmps\\UniversalOpAmp2 176 256 R0
SYMATTR InstName U2
SYMBOL cap 208 96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 1n
SYMBOL res 720 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 20k
SYMBOL cap 816 96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 1n
SYMBOL voltage -224 256 R0
WINDOW 3 -236 58 Left 2
WINDOW 123 -16 85 Left 2
WINDOW 39 0 0 Left 0
WINDOW 0 -16 57 Left 2
SYMATTR Value SINE(0 .1414 10k)
SYMATTR InstName V5
SYMBOL cap 48 224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1n
SYMBOL OpAmps\\UniversalOpAmp2 800 256 R0
SYMATTR InstName U1
SYMBOL res 848 0 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10Meg
SYMBOL cap 608 224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
WINDOW 39 60 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 470n
SYMATTR SpiceLine IC=-1.65
SYMBOL voltage -352 16 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V6
SYMATTR Value 5
SYMBOL voltage -352 128 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V7
SYMATTR Value 5
TEXT -288 -24 Left 2 ;.ac dec 1000 1 1T
TEXT -304 40 Left 2 !.tran 0 .05 0 5n uic
TEXT -304 64 Left 2 ;.options numdgt=7
TEXT -304 88 Left 2 !.options plotwinsize=0

can't quite figure out the low frequency noise, but I think it is due to simulator startup and limited simulation time: