Version 4
SHEET 1 4676 1600
WIRE 288 -448 288 -480
WIRE 368 -448 288 -448
WIRE 288 -416 288 -448
WIRE 288 -320 288 -336
WIRE 368 -320 368 -384
WIRE 368 -320 288 -320
WIRE 384 -320 368 -320
WIRE 288 -304 288 -320
WIRE 368 -240 368 -320
WIRE 288 -176 288 -224
WIRE 368 -176 288 -176
WIRE 288 -160 288 -176
WIRE 2592 -80 2560 -80
WIRE 2800 -80 2656 -80
WIRE 1200 32 1104 32
WIRE 1360 32 1200 32
WIRE 1456 32 1360 32
WIRE 2288 32 1456 32
WIRE 2560 32 2560 -80
WIRE 2560 32 2368 32
WIRE 2592 32 2560 32
WIRE 2800 32 2800 -80
WIRE 2800 32 2672 32
WIRE 2720 64 2672 64
WIRE 1104 80 1104 32
WIRE 1200 80 1200 32
WIRE 1360 80 1360 32
WIRE 1456 80 1456 32
WIRE 2560 80 2560 32
WIRE 2560 80 2464 80
WIRE 2672 112 2672 64
WIRE 2672 112 2640 112
WIRE 4160 128 4160 80
WIRE 2640 160 2640 112
WIRE 2720 160 2720 144
WIRE 2560 176 2560 80
WIRE 2608 176 2560 176
WIRE 2800 192 2800 32
WIRE 2800 192 2672 192
WIRE 2976 192 2800 192
WIRE 3344 192 2976 192
WIRE 3712 192 3424 192
WIRE 3872 192 3712 192
WIRE 4048 192 3872 192
WIRE 4160 192 4128 192
WIRE 4304 192 4160 192
WIRE 2608 208 2560 208
WIRE 2064 224 1968 224
WIRE 2224 224 2064 224
WIRE 2320 224 2224 224
WIRE 2464 224 2320 224
WIRE 2560 224 2560 208
WIRE 2560 224 2464 224
WIRE 2640 256 2640 224
WIRE 3712 256 3712 192
WIRE 1968 272 1968 224
WIRE 2064 272 2064 224
WIRE 2224 272 2224 224
WIRE 2320 272 2320 224
WIRE 3360 272 3280 272
WIRE 3520 272 3424 272
WIRE 3872 272 3872 192
WIRE 2464 320 2464 224
WIRE 2560 320 2560 224
WIRE 3280 320 3280 272
WIRE 3360 320 3280 320
WIRE 3520 320 3520 272
WIRE 3520 320 3440 320
WIRE 1104 368 1104 160
WIRE 1200 368 1200 144
WIRE 1200 368 1104 368
WIRE 1248 368 1200 368
WIRE 1360 368 1360 160
WIRE 1360 368 1248 368
WIRE 1456 368 1456 144
WIRE 1456 368 1360 368
WIRE 3488 384 3472 384
WIRE 1248 400 1248 368
WIRE 1536 400 1248 400
WIRE 3392 400 3392 384
WIRE 2560 416 2560 400
WIRE 2688 416 2560 416
WIRE 2800 416 2768 416
WIRE 2976 416 2976 192
WIRE 3040 416 2976 416
WIRE 3152 416 3120 416
WIRE 3280 416 3280 320
WIRE 3280 416 3232 416
WIRE 3360 416 3280 416
WIRE 1248 432 1248 400
WIRE 3520 432 3520 320
WIRE 3520 432 3424 432
WIRE 3600 432 3520 432
WIRE 3712 432 3712 320
WIRE 3712 432 3680 432
WIRE 3872 432 3872 352
WIRE 3872 432 3712 432
WIRE 4032 432 3872 432
WIRE 4160 432 4112 432
WIRE 4304 432 4160 432
WIRE 2464 448 2464 384
WIRE 3360 448 3280 448
WIRE 3392 480 3392 464
WIRE 3392 480 3360 480
WIRE 1968 512 1968 352
WIRE 2064 512 2064 336
WIRE 2064 512 1968 512
WIRE 2128 512 2064 512
WIRE 2224 512 2224 352
WIRE 2224 512 2128 512
WIRE 2320 512 2320 336
WIRE 2320 512 2224 512
WIRE 3360 512 3360 480
WIRE 4160 528 4160 496
WIRE 1536 544 1536 400
WIRE 2128 544 2128 512
WIRE 2128 544 1536 544
WIRE 1248 560 1248 512
WIRE 3280 608 3280 448
WIRE 3392 608 3360 608
WIRE 3536 608 3472 608
WIRE 2528 864 2496 864
WIRE 2736 864 2592 864
WIRE 1136 976 1040 976
WIRE 1296 976 1136 976
WIRE 1392 976 1296 976
WIRE 2224 976 1392 976
WIRE 2496 976 2496 864
WIRE 2496 976 2304 976
WIRE 2528 976 2496 976
WIRE 2736 976 2736 864
WIRE 2736 976 2608 976
WIRE 1040 1024 1040 976
WIRE 1136 1024 1136 976
WIRE 1296 1024 1296 976
WIRE 1392 1024 1392 976
WIRE 2496 1024 2496 976
WIRE 2496 1024 2400 1024
WIRE 4032 1072 4032 1024
WIRE 2576 1104 2576 1072
WIRE 2496 1120 2496 1024
WIRE 2544 1120 2496 1120
WIRE 2736 1136 2736 976
WIRE 2736 1136 2608 1136
WIRE 2912 1136 2736 1136
WIRE 3280 1136 2912 1136
WIRE 3648 1136 3360 1136
WIRE 3808 1136 3648 1136
WIRE 3920 1136 3808 1136
WIRE 4032 1136 4000 1136
WIRE 4176 1136 4032 1136
WIRE 2544 1152 2496 1152
WIRE 2000 1168 1904 1168
WIRE 2160 1168 2000 1168
WIRE 2256 1168 2160 1168
WIRE 2400 1168 2256 1168
WIRE 2496 1168 2496 1152
WIRE 2496 1168 2400 1168
WIRE 3648 1200 3648 1136
WIRE 1904 1216 1904 1168
WIRE 2000 1216 2000 1168
WIRE 2160 1216 2160 1168
WIRE 2256 1216 2256 1168
WIRE 2576 1216 2576 1168
WIRE 3296 1216 3216 1216
WIRE 3456 1216 3360 1216
WIRE 3808 1216 3808 1136
WIRE 2400 1264 2400 1168
WIRE 2496 1264 2496 1168
WIRE 3216 1264 3216 1216
WIRE 3296 1264 3216 1264
WIRE 3456 1264 3456 1216
WIRE 3456 1264 3376 1264
WIRE 1040 1312 1040 1104
WIRE 1136 1312 1136 1088
WIRE 1136 1312 1040 1312
WIRE 1184 1312 1136 1312
WIRE 1296 1312 1296 1104
WIRE 1296 1312 1184 1312
WIRE 1392 1312 1392 1088
WIRE 1392 1312 1296 1312
WIRE 1184 1344 1184 1312
WIRE 1472 1344 1184 1344
WIRE 3328 1344 3328 1312
WIRE 2496 1360 2496 1344
WIRE 2624 1360 2496 1360
WIRE 2912 1360 2912 1136
WIRE 2976 1360 2912 1360
WIRE 3088 1360 3056 1360
WIRE 3216 1360 3216 1264
WIRE 3216 1360 3168 1360
WIRE 3296 1360 3216 1360
WIRE 1184 1376 1184 1344
WIRE 3456 1376 3456 1264
WIRE 3456 1376 3360 1376
WIRE 3536 1376 3456 1376
WIRE 3648 1376 3648 1264
WIRE 3648 1376 3616 1376
WIRE 3808 1376 3808 1296
WIRE 3808 1376 3648 1376
WIRE 3904 1376 3808 1376
WIRE 4032 1376 3984 1376
WIRE 4176 1376 4032 1376
WIRE 2400 1392 2400 1328
WIRE 3296 1392 3216 1392
WIRE 1904 1456 1904 1296
WIRE 2000 1456 2000 1280
WIRE 2000 1456 1904 1456
WIRE 2064 1456 2000 1456
WIRE 2160 1456 2160 1296
WIRE 2160 1456 2064 1456
WIRE 2256 1456 2256 1280
WIRE 2256 1456 2160 1456
WIRE 3328 1456 3328 1408
WIRE 4032 1472 4032 1440
WIRE 1472 1488 1472 1344
WIRE 2064 1488 2064 1456
WIRE 2064 1488 1472 1488
WIRE 1184 1504 1184 1456
WIRE 3216 1552 3216 1392
WIRE 3328 1552 3296 1552
FLAG 384 -320 0
FLAG 288 -480 +15V
FLAG 288 -160 -15V
FLAG 1248 560 0
FLAG 2464 448 0
FLAG 2720 160 0
FLAG 2640 256 0
FLAG 2800 416 0
FLAG 3536 608 0
FLAG 3488 384 0
FLAG 3360 512 0
FLAG 2464 160 0
FLAG 1184 1504 0
FLAG 2400 1392 0
FLAG 2400 1104 0
FLAG 2624 1360 0
FLAG 3328 1552 0
FLAG 3328 1456 -15V
FLAG 3328 1312 +15V
FLAG 2576 1216 -15V
FLAG 2576 1072 +15V
FLAG 4160 80 0
FLAG 4160 528 0
FLAG 4032 1024 0
FLAG 4032 1472 0
SYMBOL voltage 288 -432 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage 288 -320 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 15
SYMBOL res 2688 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value {Rf}
SYMBOL current 1104 160 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 -56 Left 2
WINDOW 123 24 -28 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I3
SYMATTR Value SINE(0 0.5u 2k 0 0 0)
SYMATTR Value2 AC 0.5u 0
SYMBOL cap 1440 80 R0
SYMATTR InstName C5
SYMATTR Value 50p
SYMBOL res 1376 176 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R6
SYMATTR Value 100Meg
SYMBOL cap 2304 272 R0
SYMATTR InstName C6
SYMATTR Value 50p
SYMBOL res 2240 368 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R7
SYMATTR Value 100Meg
SYMBOL diode 2048 272 R0
SYMATTR InstName D3
SYMATTR Value Di_opt
SYMBOL diode 1184 80 R0
SYMATTR InstName D4
SYMATTR Value Di_opt
SYMBOL res 2576 416 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R8
SYMATTR Value {Rf}
SYMBOL current 1968 352 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 -56 Left 2
WINDOW 123 24 -28 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I4
SYMATTR Value SINE(0 0.5u 2k 0 0 180)
SYMATTR Value2 AC 0.5u 180
SYMBOL voltage 1248 416 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value {V_PDbias}
SYMBOL cap 2656 -96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C8
SYMATTR Value 6p
SYMBOL Opamps\\LT1013 2640 128 R0
SYMATTR InstName U3
SYMBOL voltage 2720 48 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value 5
SYMBOL voltage 2672 416 R270
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V6
SYMATTR Value 1.5
SYMBOL res 3440 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 22
SYMBOL Opamps\\LT1013 3392 368 R0
SYMATTR InstName U1
SYMBOL res 3456 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 1k
SYMBOL voltage 3376 608 R270
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V7
SYMATTR Value 1.5
SYMBOL res 3136 400 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 1k
SYMBOL res 3376 592 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL res 3696 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 22
SYMBOL cap 3696 256 R0
SYMATTR InstName C9
SYMATTR Value 100p
SYMBOL voltage 3376 384 R270
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V8
SYMATTR Value 5
SYMBOL cap 3424 256 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C10
SYMATTR Value 10p
SYMBOL res 3888 368 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R14
SYMATTR Value 120
SYMBOL current 2464 160 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 -56 Left 2
WINDOW 123 24 -28 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I5
SYMATTR Value SINE(0n 0.1n 1k 0 0 0)
SYMATTR Value2 AC 0.5u 180
SYMBOL voltage 2272 32 R270
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V10
SYMATTR Value 0.001m
SYMBOL voltage 3136 416 R270
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V9
SYMATTR Value 1m
SYMBOL res 2624 960 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R15
SYMATTR Value {Rf}
SYMBOL current 1040 1104 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 -56 Left 2
WINDOW 123 24 -28 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I6
SYMATTR Value SINE(0 0.5u 2k 0 0 0)
SYMATTR Value2 AC 0.5u 0
SYMBOL cap 1376 1024 R0
SYMATTR InstName C11
SYMATTR Value 50p
SYMBOL res 1312 1120 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R16
SYMATTR Value 100Meg
SYMBOL cap 2240 1216 R0
SYMATTR InstName C12
SYMATTR Value 50p
SYMBOL res 2176 1312 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R17
SYMATTR Value 100Meg
SYMBOL diode 1984 1216 R0
SYMATTR InstName D5
SYMATTR Value Di_opt
SYMBOL diode 1120 1024 R0
SYMATTR InstName D6
SYMATTR Value Di_opt
SYMBOL res 2512 1360 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R18
SYMATTR Value {Rf}
SYMBOL current 1904 1296 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 -56 Left 2
WINDOW 123 24 -28 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I7
SYMATTR Value SINE(0 0.5u 2k 0 0 180)
SYMATTR Value2 AC 0.5u 180
SYMBOL voltage 1184 1360 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V11
SYMATTR Value {V_PDbias}
SYMBOL cap 2384 1264 R0
SYMATTR InstName C13
SYMATTR Value 10p
SYMBOL res 3376 1120 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R19
SYMATTR Value 22
SYMBOL res 3392 1248 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R20
SYMATTR Value 1k
SYMBOL res 3072 1344 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R21
SYMATTR Value 1k
SYMBOL res 3312 1536 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R22
SYMATTR Value 1k
SYMBOL res 3632 1360 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R23
SYMATTR Value 22
SYMBOL cap 3632 1200 R0
SYMATTR InstName C15
SYMATTR Value 100p
SYMBOL cap 3360 1200 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C16
SYMATTR Value 10p
SYMBOL res 3824 1312 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R24
SYMATTR Value 120
SYMBOL current 2400 1104 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 -56 Left 2
WINDOW 123 24 -28 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I8
SYMATTR Value SINE(1n 0.1n 1k 0 0 0)
SYMATTR Value2 AC 0.5u 180
SYMBOL voltage 2208 976 R270
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V16
SYMATTR Value 0.001m
SYMBOL voltage 3072 1360 R270
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V17
SYMATTR Value 1m
SYMBOL Opamps\\opamp2 3328 1312 R0
SYMATTR InstName U4
SYMATTR Value TL084
SYMBOL Opamps\\opamp2 2576 1072 R0
SYMATTR InstName U5
SYMATTR Value TL084
SYMBOL res 4144 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R25
SYMATTR Value 470
SYMBOL res 4128 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R26
SYMATTR Value 470
SYMBOL cap 4144 128 R0
SYMATTR InstName C17
SYMATTR Value 1n
SYMBOL cap 4144 432 R0
SYMATTR InstName C18
SYMATTR Value 1n
SYMBOL res 4016 1120 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R29
SYMATTR Value 470
SYMBOL res 4000 1360 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R30
SYMATTR Value 470
SYMBOL cap 4016 1072 R0
SYMATTR InstName C7
SYMATTR Value 1n
SYMBOL cap 4016 1376 R0
SYMATTR InstName C14
SYMATTR Value 1n
SYMBOL cap 2592 848 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C23
SYMATTR Value 6p
SYMBOL cap 352 -448 R0
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL cap 352 -240 R0
SYMATTR InstName C2
SYMATTR Value 100n
TEXT -360 -160 Left 2 !.tran 0 10m 0 100u
TEXT -856 -160 Left 2 !.lib opamp.sub
TEXT -856 -128 Left 2 ;.step param Rf list 500k 750k 1meg
TEXT -856 -88 Left 2 !.param Rf=0.35meg
TEXT -1264 -248 Left 2 !.INCLUDE TL084.301
TEXT -1440 -168 Left 2 !.model Di_opt D(Ron=0.1 Roff=1G Vfwd=0.7)
TEXT -848 -56 Left 2 !.param V_PDbias=3V
TEXT -360 -128 Left 2 !;ac dec 100 100 10meg
TEXT -1264 -216 Left 2 !.INCLUDE op484.cir