Version 4
SHEET 1 880 680
WIRE 64 -256 -16 -256
WIRE 208 -256 128 -256
WIRE -416 -160 -512 -160
WIRE -304 -160 -416 -160
WIRE -144 -160 -144 -192
WIRE -144 -160 -304 -160
WIRE -16 -160 -16 -256
WIRE -16 -160 -144 -160
WIRE 64 -160 -16 -160
WIRE 208 -160 208 -256
WIRE 208 -160 144 -160
WIRE -512 -144 -512 -160
WIRE -416 -144 -416 -160
WIRE -304 -128 -304 -160
WIRE -144 -128 -144 -160
WIRE 96 -48 96 -64
WIRE 64 -32 32 -32
WIRE -512 -16 -512 -80
WIRE -416 -16 -416 -64
WIRE -304 -16 -304 -64
WIRE -144 -16 -144 -64
WIRE 208 -16 208 -160
WIRE 208 -16 128 -16
WIRE 288 -16 208 -16
WIRE 368 -16 288 -16
WIRE 64 0 -16 0
WIRE 288 16 288 -16
WIRE -16 32 -16 0
WIRE 96 32 96 16
WIRE -16 128 -16 112
WIRE 288 128 288 80
WIRE -480 272 -512 272
WIRE -432 272 -480 272
WIRE -240 272 -352 272
WIRE 16 288 16 256
WIRE 160 288 160 256
WIRE -512 304 -512 272
WIRE -240 304 -240 272
WIRE -144 320 -192 320
WIRE -512 416 -512 384
WIRE -240 416 -240 384
WIRE -192 416 -192 368
WIRE 16 416 16 368
WIRE 160 416 160 368
FLAG -512 416 0
FLAG -16 128 0
FLAG 368 -16 out
FLAG 32 -32 fb
FLAG -480 272 fb
FLAG -144 320 out
FLAG -240 416 0
FLAG -192 416 0
FLAG -416 -16 0
FLAG -512 -16 0
FLAG -144 -16 0
FLAG -304 -16 0
FLAG 16 416 0
FLAG 160 416 0
FLAG 96 -64 V+
FLAG 96 32 V-
FLAG 16 256 V+
FLAG 160 256 V-
FLAG -144 -192 loopgain
IOPIN -144 -192 Out
FLAG 288 128 0
SYMBOL Opamps\\LT1055A 96 -80 R0
SYMATTR InstName U1
SYMBOL voltage 16 272 R0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage 160 272 R0
SYMATTR InstName V2
SYMATTR Value -15
SYMBOL Misc\\EuropeanResistor 48 -144 R270
WINDOW 0 27 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName R1
SYMATTR Value 10meg
SYMBOL Misc\\EuropeanResistor -432 -160 R0
SYMATTR InstName Rd
SYMATTR Value 10meg
SYMBOL cap -528 -144 R0
SYMATTR InstName Cd
SYMATTR Value 60p
SYMBOL cap 64 -240 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C2
SYMATTR Value 47p
SYMBOL Misc\\EuropeanResistor -528 288 R0
SYMATTR InstName R3
SYMATTR Value 1
SYMBOL Misc\\EuropeanResistor -448 288 R270
WINDOW 0 27 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName R4
SYMATTR Value 10 ac=1G
SYMBOL voltage -16 16 R0
SYMATTR InstName V3
SYMATTR Value ac 1
SYMBOL e -240 288 M0
SYMATTR InstName E1
SYMATTR Value 1
SYMBOL cap -160 -128 R0
SYMATTR InstName Copamp
SYMATTR Value 5p
SYMBOL cap -320 -128 R0
SYMATTR InstName Ck
SYMATTR Value 140p
SYMBOL cap 272 16 R0
SYMATTR InstName CL
SYMATTR Value 10p
TEXT -496 -288 Left 0 !.ac dec 100 1 10meg
TEXT -496 -376 Left 0 ;Plot V(loopgain)
TEXT -496 -256 Left 0 !.op