Version 4
SHEET 1 1348 856
WIRE -272 -208 -880 -208
WIRE 208 -208 -192 -208
WIRE -880 -160 -880 -208
WIRE -880 -160 -1088 -160
WIRE -752 -160 -880 -160
WIRE -656 -160 -752 -160
WIRE -128 -160 -576 -160
WIRE 688 -160 -128 -160
WIRE 816 -160 688 -160
WIRE 688 -144 688 -160
WIRE 816 -128 816 -160
WIRE 960 -128 816 -128
WIRE -128 -112 -128 -160
WIRE -752 -80 -752 -160
WIRE 816 -64 816 -128
WIRE 832 -64 816 -64
WIRE -1088 -48 -1088 -160
WIRE 784 -48 752 -48
WIRE 960 -48 960 -128
WIRE 208 -32 208 -208
WIRE 688 -32 688 -64
WIRE 752 -32 752 -48
WIRE 752 -32 688 -32
WIRE -128 -16 -128 -32
WIRE -16 -16 -128 -16
WIRE 176 -16 64 -16
WIRE 336 0 240 0
WIRE 752 0 752 -32
WIRE 752 0 416 0
WIRE 176 16 -112 16
WIRE 832 48 832 32
WIRE 832 48 816 48
WIRE -752 80 -752 0
WIRE -656 80 -752 80
WIRE -240 80 -576 80
WIRE -112 80 -112 16
WIRE -112 80 -160 80
WIRE 816 96 816 48
WIRE 960 96 960 32
WIRE 960 96 816 96
WIRE 208 128 208 32
WIRE -752 144 -752 80
WIRE -752 144 -832 144
WIRE -832 176 -832 144
WIRE -752 176 -752 144
WIRE 816 176 816 96
WIRE 816 208 816 176
WIRE -832 288 -832 256
WIRE -752 288 -752 256
WIRE -752 288 -832 288
WIRE 480 288 480 256
WIRE 480 304 480 288
WIRE 816 304 816 288
WIRE -1088 320 -1088 32
WIRE -752 320 -752 288
WIRE -752 320 -1088 320
WIRE -752 352 -752 320
FLAG -752 352 0
FLAG 816 304 0
FLAG 816 176 Vsens
FLAG 480 384 0
FLAG 480 176 0
FLAG 480 288 Imeas
FLAG 208 128 0
SYMBOL res -768 -96 R0
SYMATTR InstName R1
SYMATTR Value 0.05
SYMBOL res -144 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 5k
SYMBOL res -560 -176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 200
SYMBOL res -112 -16 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 5k
SYMBOL current -752 176 R0
WINDOW 123 24 28 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value PULSE(10m 2 0 10m 10m 100m 200m 1)
SYMBOL voltage -1088 -64 R0
WINDOW 123 24 72 Left 2
WINDOW 39 24 138 Left 2
SYMATTR SpiceLine Rser=0.01
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res 800 192 R0
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL pmos 784 32 M180
SYMATTR InstName M1
SYMATTR Value BSS84
SYMBOL res 432 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 1k
SYMBOL res 672 -160 R0
SYMATTR InstName R8
SYMATTR Value 1Meg
SYMBOL Opamps\\AD8538 208 -64 R0
SYMATTR InstName U1
SYMBOL res 944 -64 R0
SYMATTR InstName R9
SYMATTR Value 1Meg
SYMBOL res -816 272 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R10
SYMATTR Value 1Meg
SYMBOL res -560 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 200
SYMBOL bi 480 176 R0
SYMATTR InstName B1
SYMATTR Value I={V(Vsens)*4}
SYMBOL res 464 288 R0
SYMATTR InstName R12
SYMATTR Value 1
SYMBOL res -176 -224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 0.01
SYMBOL voltage 80 -16 R90
WINDOW 123 24 72 Left 2
WINDOW 39 24 138 Left 2
SYMATTR SpiceLine Rser=0.01
SYMATTR InstName V3
SYMATTR Value {Vos}
TEXT -936 528 Left 2 !.tran 10m
TEXT -944 608 Left 2 !.param Vos 0
TEXT -944 568 Left 2 !.temp 25 75
TEXT -704 296 Left 2 ;Linear sweep current from 10mA to 2A in 10ms
TEXT 328 416 Left 2 ;Convert voltage Vsens to current