Version 4
SHEET 1 1116 932
WIRE 48 48 -16 48
WIRE -272 80 -432 80
WIRE 48 80 48 48
WIRE 400 80 400 48
WIRE -432 96 -432 80
WIRE -272 160 -272 80
WIRE -208 160 -272 160
WIRE -16 160 -16 48
WIRE -16 160 -144 160
WIRE -432 192 -432 176
WIRE 544 208 496 208
WIRE -208 240 -144 160
WIRE -208 240 -272 240
WIRE -144 240 -208 160
WIRE -128 240 -144 240
WIRE -16 240 -48 240
WIRE -272 256 -272 240
WIRE 544 256 496 256
WIRE 544 288 544 256
WIRE 544 288 496 288
WIRE -528 304 -528 288
WIRE -400 304 -400 288
WIRE 544 304 544 288
WIRE -272 352 -272 336
WIRE -16 368 -16 240
WIRE 48 368 48 336
WIRE 48 368 -16 368
WIRE 400 384 400 336
WIRE -528 400 -528 384
WIRE -400 400 -400 384
FLAG -528 400 0
FLAG -400 400 0
FLAG -528 288 V+
FLAG -400 288 V-
FLAG 400 48 V+
FLAG 400 384 V-
FLAG 544 304 0
FLAG -272 352 0
FLAG 544 208 OUT
FLAG -432 192 0
SYMBOL LT1997-1 272 208 R0
SYMATTR InstName U1
SYMBOL voltage -528 288 R0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage -400 288 R0
SYMATTR InstName V2
SYMATTR Value -15
SYMBOL res -288 144 R0
SYMATTR InstName R1
SYMATTR Value .1
SYMBOL res -32 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1
SYMBOL res -288 240 R0
SYMATTR InstName RL
SYMATTR Value 10
SYMBOL voltage -432 80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName Vs
SYMATTR Value 0
TEXT 584 400 Left 2 !.dc Vs 0 26.5 10m
TEXT 80 0 Bottom 2 ;Gain = 10 Difference Amplifier
TEXT 544 144 Left 2 ;V(out) = 1mV/mA in RL