Version 4 SHEET 1 2284 1080 WIRE 144 -656 -144 -656 WIRE 304 -656 144 -656 WIRE 512 -656 304 -656 WIRE 944 -656 512 -656 WIRE 1200 -656 944 -656 WIRE 1344 -656 1200 -656 WIRE 1536 -656 1344 -656 WIRE 512 -592 512 -656 WIRE 944 -592 944 -656 WIRE 144 -576 144 -656 WIRE 304 -528 304 -656 WIRE 1200 -480 1200 -656 WIRE 144 -464 144 -496 WIRE 512 -464 512 -512 WIRE -320 -448 -352 -448 WIRE 944 -432 944 -512 WIRE 1136 -432 944 -432 WIRE 144 -368 144 -400 WIRE 512 -368 512 -400 WIRE 1344 -368 1344 -656 WIRE 944 -352 944 -432 WIRE 1200 -320 1200 -384 WIRE 1280 -320 1200 -320 WIRE 304 -304 304 -448 WIRE 304 -304 256 -304 WIRE 368 -304 304 -304 WIRE -192 -256 -192 -448 WIRE -128 -256 -192 -256 WIRE -16 -256 -48 -256 WIRE 144 -256 144 -304 WIRE 144 -256 80 -256 WIRE 192 -256 144 -256 WIRE 512 -256 512 -304 WIRE 512 -256 432 -256 WIRE 944 -256 944 -288 WIRE 512 -240 512 -256 WIRE 1200 -208 1200 -320 WIRE 1344 -208 1344 -272 WIRE -1376 -160 -1376 -192 WIRE 32 -128 32 -192 WIRE 32 -128 -352 -128 WIRE 944 -128 944 -192 WIRE 256 -112 256 -208 WIRE 256 -112 96 -112 WIRE 560 -112 256 -112 WIRE -1376 -48 -1376 -80 WIRE -1312 -48 -1376 -48 WIRE 368 -48 368 -208 WIRE 368 -48 320 -48 WIRE 416 -48 368 -48 WIRE 560 -48 560 -112 WIRE -896 -32 -896 -80 WIRE 96 -32 96 -112 WIRE -1376 -16 -1376 -48 WIRE -144 -16 -144 -656 WIRE -48 -16 -144 -16 WIRE 320 -16 320 -48 WIRE 416 -16 416 -48 WIRE -1136 0 -1136 -32 WIRE -48 16 -48 -16 WIRE -112 64 -352 64 WIRE -1376 96 -1376 64 WIRE 320 96 320 64 WIRE 416 96 416 64 WIRE -1136 112 -1136 80 WIRE -144 128 -144 -16 WIRE 256 144 208 144 WIRE 608 144 480 144 WIRE 672 144 608 144 WIRE 720 144 672 144 WIRE 848 144 800 144 WIRE 1088 144 848 144 WIRE 1200 144 1200 -128 WIRE 1200 144 1088 144 WIRE 1344 144 1344 -128 WIRE 1344 144 1200 144 WIRE 1376 144 1344 144 WIRE 1504 144 1456 144 WIRE -208 176 -352 176 WIRE 208 176 208 144 WIRE 608 176 608 144 WIRE 672 176 672 144 WIRE 96 208 96 48 WIRE -144 256 -144 224 WIRE 32 256 -144 256 WIRE -912 288 -912 256 WIRE -816 288 -912 288 WIRE 608 288 608 240 WIRE 640 288 608 288 WIRE 672 288 672 240 WIRE 672 288 640 288 WIRE -1264 304 -1296 304 WIRE -1216 304 -1264 304 WIRE -1104 304 -1136 304 WIRE -1088 304 -1104 304 WIRE 208 304 208 256 WIRE 640 304 640 288 WIRE -912 320 -912 288 WIRE 560 320 560 32 WIRE -1104 336 -1104 304 WIRE -816 336 -816 288 WIRE -48 368 -48 112 WIRE 496 368 -48 368 WIRE -1264 400 -1264 304 WIRE 1088 416 1088 144 WIRE -912 432 -912 400 WIRE -816 432 -816 400 WIRE 96 432 96 304 WIRE 416 432 416 192 WIRE 416 432 96 432 WIRE -1104 448 -1104 416 WIRE 560 448 560 416 WIRE 608 448 560 448 WIRE 848 448 848 144 WIRE 848 448 672 448 WIRE 944 464 944 -64 WIRE 1024 464 944 464 WIRE 320 496 320 192 WIRE 560 496 560 448 WIRE 560 496 320 496 WIRE -1264 512 -1264 480 WIRE 240 560 240 512 WIRE 768 560 768 512 WIRE 1200 560 1200 144 WIRE 96 608 96 432 WIRE 176 608 96 608 WIRE 560 608 560 496 WIRE 704 608 560 608 WIRE 1088 608 1088 512 WIRE 1136 608 1088 608 WIRE 96 656 96 608 WIRE 560 656 560 608 WIRE 944 656 944 464 WIRE 1344 656 1344 144 WIRE 1088 672 1088 608 WIRE 240 704 240 656 WIRE 240 704 160 704 WIRE 496 704 240 704 WIRE 768 704 768 656 WIRE 880 704 768 704 WIRE 1200 704 1200 656 WIRE 1280 704 1200 704 WIRE 944 768 944 752 WIRE 1088 768 1088 736 WIRE 1088 768 944 768 WIRE 1200 784 1200 704 WIRE 1344 784 1344 752 WIRE 96 800 96 752 WIRE 560 800 560 752 WIRE 768 800 768 704 WIRE 944 800 944 768 WIRE -144 816 -144 256 WIRE -48 816 -48 368 WIRE 240 816 240 704 WIRE -144 944 -144 896 WIRE -48 944 -48 896 WIRE -48 944 -144 944 WIRE 96 944 96 880 WIRE 96 944 -48 944 WIRE 240 944 240 896 WIRE 240 944 96 944 WIRE 560 944 560 880 WIRE 560 944 240 944 WIRE 768 944 768 880 WIRE 768 944 560 944 WIRE 944 944 944 880 WIRE 944 944 768 944 WIRE 1200 944 1200 864 WIRE 1200 944 944 944 WIRE 1344 944 1344 864 WIRE 1344 944 1200 944 WIRE 1536 944 1344 944 FLAG 240 512 Vpos FLAG 768 512 Vpos FLAG 512 -160 Vneg FLAG -352 -448 MUTE IOPIN -352 -448 In FLAG -352 64 InPos IOPIN -352 64 In FLAG 1504 144 OUT IOPIN 1504 144 Out FLAG 1536 -656 Vpos IOPIN 1536 -656 BiDir FLAG 1536 944 Vneg IOPIN 1536 944 BiDir FLAG -352 176 InNeg IOPIN -352 176 In FLAG -352 -128 GndPin IOPIN -352 -128 BiDir FLAG 208 304 GndPin IOPIN 208 304 BiDir FLAG 640 304 GndPin IOPIN 640 304 BiDir FLAG -1312 -48 0 FLAG -1376 -192 Vpos FLAG -1376 96 Vneg FLAG -1136 112 0 FLAG -1136 -32 InPos FLAG -1088 304 Out FLAG -1264 512 0 FLAG -1296 304 InNeg FLAG -816 432 0 FLAG -912 432 Vneg FLAG -912 256 MUTE FLAG -1104 448 0 FLAG -896 -80 GndPin FLAG -896 -32 0 SYMBOL npn -208 128 R0 SYMATTR InstName Q1 SYMATTR Value 2N3904 SYMBOL npn 1136 -480 R0 SYMATTR InstName Q2 SYMBOL npn 80 -192 M270 SYMATTR InstName Q3 SYMATTR Value 2N3904 SYMBOL npn 1280 -368 R0 SYMATTR InstName Q4 SYMBOL npn 1280 656 R0 SYMATTR InstName Q5 SYMBOL npn 880 656 R0 SYMATTR InstName Q6 SYMBOL npn 1136 560 R0 SYMATTR InstName Q7 SYMBOL npn 160 656 M0 SYMATTR InstName Q9 SYMATTR Value BF720/SIE SYMBOL npn 496 656 R0 SYMATTR InstName Q10 SYMATTR Value BF720/SIE SYMBOL npn 176 560 R0 SYMATTR InstName Q11 SYMATTR Value BF720/SIE SYMBOL npn 704 560 R0 SYMATTR InstName Q12 SYMBOL pnp 192 -208 M180 WINDOW 0 17 154 Left 0 WINDOW 3 26 119 Left 0 SYMATTR InstName Q13 SYMATTR Value 2N3906 SYMBOL pnp 432 -208 R180 WINDOW 0 26 156 Left 0 WINDOW 3 23 123 Left 0 SYMATTR InstName Q14 SYMATTR Value 2N3906 SYMBOL pnp 32 304 M180 SYMATTR InstName Q15 SYMATTR Value BF721/SIE SYMBOL pnp 480 192 R180 WINDOW 0 -42 136 Left 0 WINDOW 3 -29 106 Left 0 SYMATTR InstName Q16 SYMATTR Value 2N3906 SYMBOL pnp 256 192 M180 WINDOW 0 -17 139 Left 0 WINDOW 3 -26 106 Left 0 SYMATTR InstName Q18 SYMATTR Value 2N3906 SYMBOL res 80 -48 R0 SYMATTR InstName R1 SYMATTR Value 1k1 SYMBOL diode 128 -368 R0 SYMATTR InstName D1 SYMBOL diode 128 -464 R0 SYMATTR InstName D2 SYMBOL res 128 -592 R0 SYMATTR InstName R2 SYMATTR Value 1k SYMBOL res -32 -272 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R3 SYMATTR Value 1k SYMBOL diode -192 -464 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D3 SYMBOL diode -256 -464 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D4 SYMBOL res 304 -32 R0 SYMATTR InstName R4 SYMATTR Value 4k7 SYMBOL res 400 -32 R0 SYMATTR InstName R5 SYMATTR Value 4k7 SYMBOL res 192 160 R0 SYMATTR InstName R6 SYMATTR Value 10k SYMBOL diode 496 -368 R0 SYMATTR InstName D5 SYMBOL diode 496 -464 R0 SYMATTR InstName D6 SYMBOL res 496 -608 R0 SYMATTR InstName R7 SYMATTR Value 1k SYMBOL pnp 496 416 M180 SYMATTR InstName Q19 SYMATTR Value BF721/SIE SYMBOL res 544 -64 R0 SYMATTR InstName R8 SYMATTR Value 1k1 SYMBOL res 80 784 R0 SYMATTR InstName R9 SYMATTR Value 2k2 SYMBOL res 544 784 R0 SYMATTR InstName R10 SYMATTR Value 2k2 SYMBOL res 928 784 R0 SYMATTR InstName R11 SYMATTR Value 800 SYMBOL diode 1072 672 R0 SYMATTR InstName D7 SYMBOL res 1328 768 R0 SYMATTR InstName R12 SYMATTR Value 0.45 SYMBOL res 1184 768 R0 SYMATTR InstName R13 SYMATTR Value 150 SYMBOL res 1184 -224 R0 SYMATTR InstName R14 SYMATTR Value 150 SYMBOL res 1328 -224 R0 SYMATTR InstName R15 SYMATTR Value 0.45 SYMBOL diode 928 -352 R0 SYMATTR InstName D8 SYMBOL diode 928 -256 R0 SYMATTR InstName D9 SYMBOL diode 928 -128 R0 SYMATTR InstName D10 SYMBOL pnp 1024 512 M180 SYMATTR InstName Q20 SYMBOL res 816 128 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R16 SYMATTR Value 10k SYMBOL cap 672 432 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C1 SYMATTR Value 10pF SYMBOL diode 592 176 R0 WINDOW 0 -23 0 Left 0 WINDOW 3 -10 66 Left 0 SYMATTR InstName D11 SYMBOL diode 688 240 R180 WINDOW 0 24 66 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D12 SYMBOL current -144 816 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I1 SYMATTR Value 0.5mA SYMBOL current -48 816 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I2 SYMATTR Value 0.5mA SYMBOL current 240 816 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I3 SYMATTR Value 10mA SYMBOL current 768 800 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I4 SYMATTR Value 5mA SYMBOL current 512 -240 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I5 SYMATTR Value 1mA SYMBOL npn -112 16 R0 SYMATTR InstName Q17 SYMATTR Value 2N3904 SYMBOL current 944 -592 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I6 SYMATTR Value 10mA SYMBOL current 304 -528 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I7 SYMATTR Value 1mA SYMBOL res 1472 128 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R19 SYMATTR Value 0.0001 SYMBOL voltage -1376 -176 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 30 SYMBOL voltage -1376 -32 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value 30 SYMBOL voltage -1136 -16 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value SINE(0 0.2 10k) SYMBOL res -1120 288 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R17 SYMATTR Value 1k SYMBOL res -1248 496 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R18 SYMATTR Value 100 SYMBOL res -928 304 R0 SYMATTR InstName R20 SYMATTR Value 10k SYMBOL cap -832 336 R0 SYMATTR InstName C2 SYMATTR Value 1u SYMBOL res -1120 320 R0 SYMATTR InstName R21 SYMATTR Value 4 TEXT -1224 -192 Left 0 !.tran 1