Version 4
SHEET 1 880 1116
WIRE 144 16 112 16
WIRE 272 16 224 16
WIRE 208 128 208 112
WIRE -16 144 -224 144
WIRE 112 144 112 16
WIRE 112 144 64 144
WIRE 176 144 112 144
WIRE 272 160 272 16
WIRE 272 160 240 160
WIRE 352 160 272 160
WIRE -224 176 -224 144
WIRE 176 176 128 176
WIRE 208 208 208 192
WIRE -224 288 -224 256
WIRE 144 304 112 304
WIRE 272 304 224 304
WIRE 208 416 208 400
WIRE -224 432 -224 400
WIRE -16 432 -48 432
WIRE 112 432 112 304
WIRE 112 432 64 432
WIRE 176 432 112 432
WIRE 272 448 272 304
WIRE 272 448 240 448
WIRE 352 448 272 448
WIRE 176 464 128 464
WIRE 208 496 208 480
WIRE -224 544 -224 512
WIRE 0 592 -48 592
WIRE 128 592 80 592
WIRE 160 592 128 592
WIRE 288 592 240 592
WIRE -224 688 -224 656
WIRE 224 704 224 688
WIRE 192 720 80 720
WIRE 288 736 288 592
WIRE 288 736 256 736
WIRE 368 736 288 736
WIRE 128 752 128 592
WIRE 192 752 128 752
WIRE 224 784 224 768
WIRE -224 800 -224 768
WIRE 0 880 -48 880
WIRE 128 880 80 880
WIRE 160 880 128 880
WIRE 288 880 240 880
WIRE 224 992 224 976
WIRE 192 1008 80 1008
WIRE 288 1024 288 880
WIRE 288 1024 256 1024
WIRE 368 1024 288 1024
WIRE 128 1040 128 880
WIRE 192 1040 128 1040
WIRE 224 1072 224 1056
FLAG 128 176 2.5V
FLAG -224 544 0
FLAG -224 400 +5V
FLAG 208 208 0
FLAG 208 112 +5V
FLAG -48 432 2.5V
FLAG 208 496 0
FLAG 208 400 +5V
FLAG 80 720 2.5V
FLAG 224 784 0
FLAG 224 688 +5V
FLAG 352 160 1
FLAG 352 448 2
FLAG 368 736 3
FLAG -224 288 0
FLAG -224 800 0
FLAG -224 656 2.5V
FLAG -224 144 in
FLAG 128 464 in
FLAG -48 592 in
FLAG -48 880 2.5V
FLAG 224 1072 0
FLAG 224 976 +5V
FLAG 368 1024 4
FLAG 80 1008 in
SYMBOL voltage -224 416 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res 240 0 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 20k
SYMBOL res 80 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL voltage -224 160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 21 102 Left 2
SYMATTR Value SINE(2.5 1.5 50)
SYMATTR InstName V2
SYMBOL Opamps\\opamp2 208 96 R0
SYMATTR InstName U1
SYMATTR Value OPA379
SYMBOL res 240 288 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 80 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL Opamps\\opamp2 208 384 R0
SYMATTR InstName U2
SYMATTR Value OPA379
SYMBOL res 256 576 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 20k
SYMBOL res 96 576 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL Opamps\\opamp2 224 672 R0
SYMATTR InstName U3
SYMATTR Value OPA379
SYMBOL voltage -224 672 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 2.5
SYMBOL res 256 864 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 20k
SYMBOL res 96 864 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL Opamps\\opamp2 224 960 R0
SYMATTR InstName U4
SYMATTR Value OPA379
TEXT -184 -168 Left 2 !.include OPA379.LIB
TEXT -184 -96 Left 2 !.tran 0 40ms 0 20u
TEXT -184 -136 Left 2 !.options gmin=1e-10 abstol=1e-10
TEXT -184 -208 Left 2 !.op
TEXT -184 -64 Left 2 !.options plotwinsize=0