Version 4
SHEET 1 2156 900
WIRE 864 -176 816 -176
WIRE 976 -176 944 -176
WIRE 1728 -144 1696 -144
WIRE 1904 -144 1808 -144
WIRE 208 -112 176 -112
WIRE 320 -112 272 -112
WIRE 688 -112 656 -112
WIRE 816 -112 816 -176
WIRE 816 -112 768 -112
WIRE 656 -64 656 -112
WIRE 656 -64 608 -64
WIRE 816 -48 816 -112
WIRE 864 -48 816 -48
WIRE 1584 -48 1568 -48
WIRE 1696 -48 1696 -144
WIRE 1696 -48 1664 -48
WIRE 1728 -48 1696 -48
WIRE -80 -32 -80 -48
WIRE -80 -32 -96 -32
WIRE 976 -32 976 -176
WIRE 976 -32 928 -32
WIRE 1056 -32 976 -32
WIRE 1904 -32 1904 -144
WIRE 1904 -32 1792 -32
WIRE 1952 -32 1904 -32
WIRE -80 -16 -80 -32
WIRE 176 -16 176 -112
WIRE 208 -16 176 -16
WIRE 320 -16 320 -112
WIRE 320 -16 288 -16
WIRE 656 -16 656 -64
WIRE 704 -16 656 -16
WIRE 816 -16 768 -16
WIRE 864 -16 816 -16
WIRE 816 32 816 -16
WIRE 176 96 176 -16
WIRE 176 96 112 96
WIRE 208 96 176 96
WIRE 320 112 320 -16
WIRE 320 112 272 112
WIRE 352 112 320 112
WIRE 208 128 160 128
WIRE 816 144 816 112
WIRE 688 288 656 288
WIRE 800 288 768 288
WIRE 960 288 800 288
WIRE 1184 288 1152 288
WIRE 1296 288 1264 288
WIRE 1456 288 1296 288
WIRE 1680 288 1648 288
WIRE 1792 288 1744 288
WIRE 1952 288 1792 288
WIRE 800 400 800 288
WIRE 848 400 800 400
WIRE 1296 400 1296 288
WIRE 1344 400 1296 400
WIRE 1792 400 1792 288
WIRE 1840 400 1792 400
WIRE 960 416 960 288
WIRE 960 416 912 416
WIRE 1040 416 960 416
WIRE 1456 416 1456 288
WIRE 1456 416 1408 416
WIRE 1536 416 1456 416
WIRE 1952 416 1952 288
WIRE 1952 416 1904 416
WIRE 2096 416 1952 416
WIRE 560 432 528 432
WIRE 656 432 656 288
WIRE 656 432 624 432
WIRE 688 432 656 432
WIRE 800 432 752 432
WIRE 848 432 800 432
WIRE 1040 432 1040 416
WIRE 1056 432 1040 432
WIRE 1152 432 1152 288
WIRE 1152 432 1120 432
WIRE 1184 432 1152 432
WIRE 1296 432 1248 432
WIRE 1344 432 1296 432
WIRE 1536 432 1536 416
WIRE 1552 432 1536 432
WIRE 1648 432 1648 288
WIRE 1648 432 1632 432
WIRE 1664 432 1648 432
WIRE 1792 432 1744 432
WIRE 1840 432 1792 432
WIRE 800 480 800 432
WIRE 1296 480 1296 432
WIRE 1792 480 1792 432
WIRE 800 592 800 560
WIRE 1296 592 1296 560
WIRE 1792 592 1792 544
FLAG -80 272 0
FLAG -80 -128 V+
FLAG -96 -32 0
FLAG -80 64 V-
FLAG 800 592 0
FLAG 1296 592 0
FLAG 1792 592 0
FLAG 528 432 Vin
FLAG 2096 416 Vbp
FLAG 880 384 V+
FLAG 1376 384 V+
FLAG 1872 384 V+
FLAG 880 448 V-
FLAG 1376 448 V-
FLAG 1872 448 V-
FLAG 1760 0 V+
FLAG -80 -304 Vref
FLAG -80 -224 0
FLAG 1728 -16 Vref
FLAG 1568 -48 Vap
FLAG 1952 -32 Vout
FLAG 1760 -64 0
FLAG -80 192 Vph
FLAG 240 80 V+
FLAG 240 144 V-
FLAG 160 128 0
FLAG 112 96 Vph
FLAG 352 112 Vin
FLAG 608 -64 Vbp
FLAG 1056 -32 Vap
FLAG 896 -64 V+
FLAG 896 0 V-
FLAG 816 144 0
SYMBOL voltage -80 -144 R0
SYMATTR InstName V3
SYMATTR Value 5
SYMBOL voltage -80 -32 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL cap 624 416 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C11
SYMATTR Value 1.5n
SYMBOL cap 752 416 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C12
SYMATTR Value 1.5n
SYMBOL res 784 272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 150k
SYMBOL res 816 576 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R12
SYMATTR Value 300k
SYMBOL Opamps\\opamp2 880 352 R0
SYMATTR InstName U1
SYMATTR Value LM321LV
SYMBOL cap 1120 416 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C21
SYMATTR Value 1.5n
SYMBOL cap 1248 416 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C22
SYMATTR Value 1.5n
SYMBOL res 1280 272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R21
SYMATTR Value 150k
SYMBOL res 1312 576 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R22
SYMATTR Value 300k
SYMBOL Opamps\\opamp2 1376 352 R0
SYMATTR InstName U2
SYMATTR Value LM321LV
SYMBOL Opamps\\opamp2 1872 352 R0
SYMATTR InstName U3
SYMATTR Value LM321LV
SYMBOL cap 1744 272 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C31
SYMATTR Value 3n
SYMBOL cap 1808 544 R180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C32
SYMATTR Value 1.5n
SYMBOL res 1648 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R31
SYMATTR Value 7.5k
SYMBOL res 1760 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R32
SYMATTR Value 7.5k
SYMBOL Opamps\\opamp2 1760 32 M180
SYMATTR InstName U5
SYMATTR Value LM321LV
SYMBOL res 1680 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 120
SYMBOL res 1824 -160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 3.1k
SYMBOL voltage -80 -320 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 2.93
SYMBOL current -80 192 R0
WINDOW 123 24 108 Left 2
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value PULSE(0 1u 3m 1n 1n .5m 1m)
SYMATTR Value2 AC 2u
SYMBOL Opamps\\opamp2 240 48 R0
SYMATTR InstName U6
SYMATTR Value OPA381
SYMBOL res 304 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1Meg
SYMBOL cap 272 -128 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 10p
SYMBOL Opamps\\opamp2 896 -96 R0
SYMATTR InstName U4
SYMATTR Value LM321LV
SYMBOL res 800 16 R0
SYMATTR InstName R4
SYMATTR Value 150k
SYMBOL cap 768 -32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 30n
SYMBOL res 784 -128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 150k
SYMBOL res 960 -192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 150k
TEXT -184 352 Left 2 ;.ac dec 100 10 100k
TEXT -296 496 Left 1 !.include C:\\Program Files\\LTC\\LTspiceXVII\\my_models\\LM324.MOD
TEXT -184 384 Left 2 ;.tran 0 10m 0 2u
TEXT -296 464 Left 1 !.include C:\\Program Files\\LTC\\LTspiceXVII\\my_models\\LM741.MOD
TEXT -384 528 Left 1 !.include C:\\Program Files\\LTC\\LTspiceXVII\\my_models\\OPA381_PSPICE_AIO\\OPA381.LIB
TEXT -296 560 Left 1 !.include C:\\Program Files\\LTC\\LTspiceXVII\\my_models\\TLV6001.txt
TEXT -296 592 Left 1 !.include C:\\Program Files\\LTC\\LTspiceXVII\\my_models\\LM321LV.cir
TEXT -184 416 Left 2 !.noise V[Vap] I1 dec 100 10 100k