Version 4
SHEET 1 932 680
WIRE -144 -80 -272 -80
WIRE -16 -80 -64 -80
WIRE 64 -80 -16 -80
WIRE 208 -80 144 -80
WIRE -272 -48 -272 -80
WIRE -272 64 -272 32
WIRE 80 64 80 32
WIRE -16 80 -16 -80
WIRE 48 80 -16 80
WIRE 208 96 208 -80
WIRE 208 96 112 96
WIRE 320 96 208 96
WIRE 384 96 320 96
WIRE -144 112 -272 112
WIRE 48 112 -64 112
WIRE -272 128 -272 112
WIRE 320 144 320 96
WIRE 80 176 80 128
WIRE -272 240 -272 208
WIRE 320 272 320 224
WIRE -272 352 -272 336
WIRE -160 352 -160 336
WIRE -272 448 -272 432
WIRE -160 448 -160 432
FLAG -272 448 0
FLAG -272 336 +V
FLAG -160 448 0
FLAG 80 32 +V
FLAG -272 240 0
FLAG -272 64 0
FLAG 384 96 out
FLAG 320 272 0
FLAG -160 336 -V
FLAG 80 176 0
SYMBOL voltage -272 336 R0
SYMATTR InstName V3
SYMATTR Value 9
SYMBOL Opamps\\opamp2 80 32 R0
SYMATTR InstName U1
SYMATTR Value ISL70444SEH
SYMBOL voltage -272 112 R0
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL voltage -272 -64 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res -160 -64 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res 48 -64 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 1G
SYMBOL voltage -160 336 R0
SYMATTR InstName V4
SYMATTR Value -9
SYMBOL res -160 128 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL res 304 128 R0
SYMATTR InstName R4
SYMATTR Value 100k
TEXT -288 -288 Left 2 !.lib ISL70444SEH.lib
TEXT -288 -248 Left 2 !.tran 1m
TEXT -64 464 Left 2 ;.options cshunt=1e-17
TEXT -64 400 Left 2 ;.options method=gear
TEXT -64 432 Left 2 ;.option gmin=1e-10 abstol=1e-10  ptrantau=1u
TEXT 184 344 Left 2 ;Wegen Konvergenzproblem
CIRCLE Normal 432 320 240 112 2