Version 4 SHEET 1 1076 916 WIRE -256 -352 -256 -384 WIRE -256 -352 -672 -352 WIRE -672 -304 -672 -352 WIRE -256 -224 -256 -352 WIRE -896 -208 -992 -208 WIRE -752 -208 -832 -208 WIRE -672 -176 -672 -224 WIRE -320 -176 -672 -176 WIRE -992 -128 -992 -208 WIRE -896 -128 -992 -128 WIRE -752 -128 -752 -208 WIRE -752 -128 -832 -128 WIRE -672 -128 -672 -176 WIRE 656 -128 496 -128 WIRE -1312 -96 -1360 -96 WIRE -1152 -96 -1232 -96 WIRE -1040 -96 -1088 -96 WIRE -256 -80 -256 -128 WIRE 496 -48 496 -128 WIRE -864 0 -864 -32 WIRE -1520 16 -1520 -48 WIRE -1360 16 -1360 -96 WIRE -1360 16 -1520 16 WIRE -1312 16 -1360 16 WIRE -1200 16 -1232 16 WIRE -1168 16 -1200 16 WIRE -1040 16 -1040 -96 WIRE -1040 16 -1088 16 WIRE -992 16 -992 -128 WIRE -992 16 -1040 16 WIRE -896 16 -992 16 WIRE -752 32 -752 -128 WIRE -752 32 -832 32 WIRE -672 32 -672 -64 WIRE -672 32 -752 32 WIRE -608 32 -672 32 WIRE -256 32 -256 0 WIRE 288 32 -256 32 WIRE 416 32 288 32 WIRE 448 32 416 32 WIRE -896 48 -928 48 WIRE -256 64 -256 32 WIRE 416 64 416 32 WIRE -1200 80 -1200 16 WIRE -1520 96 -1520 16 WIRE -864 96 -864 64 WIRE -672 128 -672 32 WIRE -256 192 -256 144 WIRE -1520 224 -1520 176 WIRE -1200 224 -1200 144 WIRE -928 224 -928 48 WIRE -672 240 -672 192 WIRE -320 240 -672 240 WIRE 128 240 128 192 WIRE 416 240 416 144 WIRE -672 288 -672 240 WIRE -192 288 -256 288 WIRE -256 320 -256 288 WIRE 128 352 128 320 WIRE 416 352 128 352 WIRE 128 400 128 352 WIRE 656 400 656 -128 WIRE -672 416 -672 368 WIRE -256 416 -256 400 WIRE -256 416 -672 416 WIRE -256 448 -256 416 WIRE 272 464 272 432 WIRE 496 480 496 48 WIRE 496 480 336 480 WIRE 448 512 336 512 WIRE -992 528 -992 16 WIRE -816 528 -992 528 WIRE -32 528 -32 512 WIRE -32 528 -736 528 WIRE 128 528 128 480 WIRE 128 528 -32 528 WIRE 208 528 128 528 WIRE 384 544 336 544 WIRE 416 576 416 352 WIRE 416 576 336 576 WIRE 448 592 448 512 WIRE 496 592 496 560 WIRE 496 592 448 592 WIRE 272 624 272 592 WIRE 384 656 384 544 WIRE 496 656 496 592 WIRE 656 656 656 480 WIRE -416 784 -416 752 WIRE -240 784 -240 752 WIRE -80 784 -80 752 WIRE 96 784 96 752 WIRE -416 896 -416 864 WIRE -240 896 -240 864 WIRE -80 896 -80 864 WIRE 96 896 96 864 FLAG 496 656 0 FLAG -80 896 0 FLAG 96 896 0 FLAG -80 752 Vdd FLAG 272 432 Vdd FLAG 96 752 Vss FLAG 272 624 Vss FLAG 656 656 0 FLAG 384 656 0 FLAG 128 192 0 FLAG -32 512 CurrenSense IOPIN -32 512 Out FLAG -416 896 0 FLAG -240 896 0 FLAG -416 752 Vcc FLAG -240 752 Vee FLAG -256 -384 Vcc FLAG -256 448 Vee FLAG 416 240 0 FLAG -864 -32 Vcc FLAG -864 96 Vee FLAG -1520 224 0 FLAG -928 224 0 FLAG -1520 -48 Vin IOPIN -1520 -48 In FLAG -608 32 Drive_AB IOPIN -608 32 Out FLAG -1200 224 0 FLAG -192 288 Vq IOPIN -192 288 Out FLAG 288 32 vGS SYMBOL Opamps\\LT1193 272 528 M0 WINDOW 0 22 -45 Left 2 SYMATTR InstName U3 SYMBOL res 480 464 R0 SYMATTR InstName Rs SYMATTR Value 0.001 SYMATTR SpiceLine tol=1 SYMBOL voltage 656 384 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName Vex SYMATTR Value 10 SYMBOL voltage -80 768 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL voltage 96 880 R180 WINDOW 0 24 96 Left 2 WINDOW 3 24 16 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 5 SYMBOL res 112 384 R0 SYMATTR InstName R1 SYMATTR Value 4.5k SYMATTR SpiceLine tol=1 SYMBOL res 144 224 M0 SYMATTR InstName R2 SYMATTR Value 500 SYMBOL npn -320 -224 R0 SYMATTR InstName Q1 SYMATTR Value 2N3904 SYMBOL pnp -320 288 M180 SYMATTR InstName Q3 SYMATTR Value 2N3906 SYMBOL res -272 -96 R0 SYMATTR InstName R3 SYMATTR Value 3 SYMBOL res -272 48 R0 SYMATTR InstName R4 SYMATTR Value 3 SYMBOL voltage -416 768 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 15 SYMBOL voltage -240 880 R180 WINDOW 0 24 96 Left 2 WINDOW 3 24 16 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V4 SYMATTR Value 15 SYMBOL diode -688 -128 R0 SYMATTR InstName D1 SYMBOL diode -688 128 R0 SYMATTR InstName D2 SYMBOL res -688 -320 R0 SYMATTR InstName R7 SYMATTR Value 1k SYMBOL res -688 272 R0 SYMATTR InstName R8 SYMATTR Value 1k SYMBOL res 400 48 R0 SYMATTR InstName R9 SYMATTR Value 100k SYMBOL Opamps\\LT1220 -864 -32 R0 SYMATTR InstName U1 SYMBOL voltage -1520 80 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 WINDOW 3 -134 212 Left 2 SYMATTR Value PULSE(0 -1 5us 1n 1n 5us 10us 2) SYMATTR InstName V5 SYMBOL res -720 512 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 3.01k SYMBOL res -1184 32 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R6 SYMATTR Value 1.5k SYMBOL nmos 448 -48 R0 SYMATTR InstName M1 SYMATTR Value IPB015N04L SYMBOL cap -896 -112 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C1 SYMATTR Value 120p SYMBOL diode -896 -192 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D3 SYMATTR Value 1N4148 SYMBOL res -1328 32 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R5 SYMATTR Value 1.5k SYMBOL cap -1216 80 R0 SYMATTR InstName C2 SYMATTR Value 330p SYMBOL cap -1152 -80 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value 20p SYMBOL res -1328 -80 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R11 SYMATTR Value 3k SYMBOL current -256 320 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName I1 SYMATTR Value 10m TEXT -1000 888 Left 2 !.tran 0 20u 0 1n