Version 4
SHEET 1 2300 680
WIRE -528 -304 -544 -304
WIRE -512 -304 -528 -304
WIRE 592 -304 496 -304
WIRE 768 -304 672 -304
WIRE -528 -272 -528 -304
WIRE 496 -240 496 -304
WIRE 528 -240 496 -240
WIRE 624 -240 592 -240
WIRE -224 -208 -352 -208
WIRE 160 -208 32 -208
WIRE -528 -160 -528 -192
WIRE -448 -160 -528 -160
WIRE -288 -160 -304 -160
WIRE -272 -160 -288 -160
WIRE 96 -160 80 -160
WIRE 112 -160 96 -160
WIRE 560 -160 544 -160
WIRE 576 -160 560 -160
WIRE -448 -144 -448 -160
WIRE -288 -144 -288 -160
WIRE 96 -144 96 -160
WIRE 560 -144 560 -160
WIRE -528 -128 -528 -160
WIRE -352 -128 -352 -208
WIRE -320 -128 -352 -128
WIRE 32 -128 32 -208
WIRE 64 -128 32 -128
WIRE 496 -128 496 -240
WIRE 528 -128 496 -128
WIRE -224 -112 -224 -208
WIRE -224 -112 -256 -112
WIRE -160 -112 -224 -112
WIRE -80 -112 -160 -112
WIRE 160 -112 160 -208
WIRE 160 -112 128 -112
WIRE 192 -112 160 -112
WIRE 304 -112 272 -112
WIRE 384 -112 304 -112
WIRE 624 -112 624 -240
WIRE 624 -112 592 -112
WIRE 656 -112 624 -112
WIRE 768 -112 768 -304
WIRE 768 -112 736 -112
WIRE 800 -112 768 -112
WIRE 880 -112 800 -112
WIRE -320 -96 -352 -96
WIRE -160 -96 -160 -112
WIRE -80 -96 -80 -112
WIRE 64 -96 32 -96
WIRE 304 -96 304 -112
WIRE 384 -96 384 -112
WIRE 528 -96 496 -96
WIRE 800 -96 800 -112
WIRE 880 -96 880 -112
WIRE -288 -64 -288 -80
WIRE -288 -64 -304 -64
WIRE -272 -64 -288 -64
WIRE 96 -64 96 -80
WIRE 96 -64 80 -64
WIRE 112 -64 96 -64
WIRE 560 -64 560 -80
WIRE 560 -64 544 -64
WIRE 576 -64 560 -64
WIRE -528 -16 -528 -48
WIRE -528 -16 -544 -16
WIRE -512 -16 -528 -16
WIRE -160 0 -160 -32
WIRE -80 0 -80 -16
WIRE 304 0 304 -32
WIRE 384 0 384 -16
WIRE 800 0 800 -32
WIRE 880 0 880 -16
WIRE -352 32 -352 -96
WIRE -352 32 -432 32
WIRE 32 32 32 -96
WIRE 32 32 -352 32
WIRE 496 32 496 -96
WIRE 496 32 32 32
WIRE -432 48 -432 32
WIRE -432 144 -432 128
FLAG -448 -144 0
FLAG -432 144 0
FLAG -528 -304 +15V
FLAG -528 -16 -15V
FLAG -432 32 In1
FLAG -80 0 0
FLAG -80 -112 Out_1
FLAG -288 -160 +15V
FLAG -288 -64 -15V
FLAG -160 0 0
FLAG 384 0 0
FLAG 384 -112 Out_2
FLAG 96 -160 +15V
FLAG 96 -64 -15V
FLAG 304 0 0
FLAG 880 0 0
FLAG 880 -112 Out_3
FLAG 560 -160 +15V
FLAG 560 -64 -15V
FLAG 800 0 0
SYMBOL voltage -528 -144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 15
SYMBOL voltage -432 32 R0
WINDOW 123 24 44 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V3
SYMATTR Value PULSE(-1 1 50u 0.1u 0.1u 49.9u 100u)
SYMBOL voltage -528 -288 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL res -96 -112 R0
SYMATTR InstName RL1
SYMATTR Value 2K
SYMBOL cap -176 -96 R0
SYMATTR InstName CL1
SYMATTR Value {CL}
SYMBOL Opamps\\LT1122 -288 -176 R0
SYMATTR InstName U1
SYMBOL res 368 -112 R0
SYMATTR InstName RL2
SYMATTR Value 2K
SYMBOL Opamps\\LT1122 96 -176 R0
SYMATTR InstName U2
SYMBOL res 864 -112 R0
SYMATTR InstName RL3
SYMATTR Value 2K
SYMBOL Opamps\\LT1122 560 -176 R0
SYMATTR InstName U3
SYMBOL res 176 -96 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName RO1
SYMATTR Value {RO}
SYMBOL res 640 -96 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName RO2
SYMATTR Value {RO}
SYMBOL res 576 -288 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName RFB1
SYMATTR Value 10K
SYMBOL cap 528 -224 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName CFB1
SYMATTR Value 2000p
SYMBOL cap 288 -96 R0
SYMATTR InstName CL2
SYMATTR Value {CL}
SYMBOL cap 784 -96 R0
SYMATTR InstName CL3
SYMATTR Value {CL}
TEXT 120 136 Left 2 !.tran 1m
TEXT 120 96 Left 2 !;ac oct 100 100 100Meg
TEXT 536 96 Left 2 !.Param CL 0.01u
TEXT 536 136 Left 2 !.Param RO 100