Version 4
SHEET 1 1300 692
WIRE 480 -16 448 -16
WIRE 608 -16 560 -16
WIRE 640 -16 608 -16
WIRE 944 -16 720 -16
WIRE 1232 128 1232 80
WIRE -176 160 -176 112
WIRE -80 160 -80 112
WIRE 688 160 688 128
WIRE 608 176 608 -16
WIRE 656 176 608 176
WIRE 944 192 944 -16
WIRE 944 192 720 192
WIRE 368 208 368 176
WIRE 656 208 608 208
WIRE 944 256 944 192
WIRE -176 272 -176 240
WIRE -80 272 -80 240
WIRE 1232 272 1232 208
WIRE 688 288 688 224
WIRE 368 384 368 288
WIRE 480 384 368 384
WIRE 608 384 608 208
WIRE 608 384 560 384
WIRE 640 384 608 384
WIRE 944 384 944 336
WIRE 944 384 720 384
WIRE 1040 384 944 384
WIRE 1232 384 1232 336
WIRE 944 432 944 384
WIRE 368 448 368 384
WIRE 944 544 944 512
WIRE 368 560 368 528
WIRE 368 672 368 640
FLAG 688 288 0
FLAG 688 128 +UB
FLAG -176 272 0
FLAG -176 112 +UB
FLAG -80 272 0
FLAG -80 112 Usig
FLAG 1040 384 OUT
FLAG 448 -16 0
FLAG 944 544 0
FLAG 368 672 0
FLAG 368 176 +UB
FLAG 1232 80 0
FLAG 1232 384 OUT
SYMBOL voltage -176 144 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res 576 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 100k
SYMBOL res 736 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 100k
SYMBOL voltage -80 144 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PWL(0 0 500m 3.3 1 0)
SYMBOL res 576 368 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 92k
SYMBOL res 736 368 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 100k
SYMBOL res 960 352 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R5
SYMATTR Value 8.66k
SYMBOL res 928 416 R0
SYMATTR InstName PT1000
SYMATTR Value {Rx}
SYMBOL voltage 368 544 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 2.5
SYMBOL res 352 432 R0
SYMATTR InstName R6
SYMATTR Value 1.5
SYMBOL res 352 192 R0
SYMATTR InstName R7
SYMATTR Value 22k
SYMBOL zener 272 592 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMBOL schottky 1248 336 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL voltage 1232 224 R180
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 3.3
SYMBOL opamp2 688 128 R0
SYMATTR InstName U1
SYMATTR Value OPA333
TEXT -184 384 Left 2 !.include OPA333.LIB
TEXT -184 416 Left 2 !.tran 1
TEXT 288 384 Left 2 ;2,5V
TEXT 480 568 Left 2 ;LMZ385M3-2.5/NOPB
TEXT 288 200 Left 2 ;5V
TEXT 800 608 Left 2 !.step param Rx 900 1400 100
RECTANGLE Normal 464 656 304 448 2