Version 4 SHEET 1 1984 1000 WIRE 320 -160 320 -96 WIRE 320 -96 368 -96 WIRE 320 736 320 672 WIRE 320 672 368 672 WIRE 864 592 560 592 WIRE 560 592 560 672 WIRE 560 160 560 384 WIRE 560 544 864 544 WIRE 560 80 560 -96 WIRE 912 528 912 400 WIRE 912 400 1008 400 WIRE 1008 400 1008 416 WIRE 1008 496 1008 560 WIRE 1008 560 1072 560 WIRE 912 608 912 672 WIRE 912 672 1136 672 WIRE 1136 608 1136 672 WIRE 1136 672 1264 672 WIRE 1136 512 1136 416 WIRE 1136 416 1264 416 WIRE 560 -96 704 -96 WIRE 816 -96 816 240 WIRE 816 320 816 672 WIRE 816 672 704 672 WIRE 704 304 704 672 WIRE 704 672 560 672 WIRE 704 240 704 -96 WIRE 704 -96 816 -96 WIRE 368 560 368 672 WIRE 368 672 560 672 WIRE 368 464 368 384 WIRE 368 384 560 384 WIRE 560 384 560 544 WIRE 368 -96 368 0 WIRE 368 -96 560 -96 WIRE 368 80 368 112 WIRE 368 288 368 384 WIRE -176 352 -176 336 WIRE -176 256 -176 240 WIRE -176 240 304 240 WIRE -176 352 -256 352 WIRE 368 112 240 112 WIRE 368 112 368 192 WIRE 48 112 48 320 WIRE 48 416 48 512 WIRE 48 512 80 512 WIRE -96 480 -96 464 WIRE -96 384 -96 368 WIRE -96 368 -16 368 WIRE -96 480 -256 480 WIRE 176 512 304 512 WIRE 240 640 240 112 WIRE 240 112 48 112 WIRE 176 544 176 512 WIRE 176 640 240 640 WIRE 112 592 80 592 WIRE 80 592 80 512 WIRE 80 512 176 512 FLAG 320 -160 V+ FLAG 320 736 V- FLAG 1264 416 OUT IOPIN 1264 416 Out FLAG 1264 672 OGND IOPIN 1264 672 In FLAG -256 352 In+ IOPIN -256 352 In FLAG -256 480 In- IOPIN -256 480 In SYMBOL res 800 224 R0 SYMATTR InstName Rp SYMATTR Value { RP } SYMBOL diode 720 304 R180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D1 SYMATTR Value dx SYMBOL e 912 512 R0 SYMATTR InstName E1 SYMATTR Value 1 SYMBOL f 560 160 M180 WINDOW 0 24 88 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName F1 SYMATTR Value V1 1 SYMBOL npn2 1072 512 R0 SYMATTR InstName Q5 SYMATTR Value qoc SYMBOL voltage 1008 400 R0 SYMATTR InstName V1 SYMATTR Value 0 SYMBOL npn2 304 464 R0 SYMATTR InstName Q3 SYMATTR Value qmo SYMBOL current 368 0 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName IEE1 SYMATTR Value 100µ SYMBOL pnp2 304 288 M180 SYMATTR InstName Q1 SYMATTR Value qin SYMBOL voltage -176 240 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName Vi1 SYMATTR Value .45 SYMBOL pnp2 -16 416 M180 SYMATTR InstName Q2 SYMATTR Value qin SYMBOL voltage -96 368 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName Vi2 SYMATTR Value .45 SYMBOL npn2 112 544 R0 SYMATTR InstName Q4 SYMATTR Value qmi TEXT 384 -216 Left 0 !.model qin PNP(Is=800.0E-18 Bf=500) TEXT 384 -184 Left 0 !.model qmi NPN(Is=800.0E-18 Bf=1002) TEXT 384 752 Left 0 !.model qmo NPN(Is=800.0E-18 Bf=1000 Cjc=1E-15 Tr=124.2E-9) TEXT 384 784 Left 0 !.model qoc NPN(Is=800.0E-18 Bf=206.9E3 Cjc=1E-15 Tf=7.855E-12 Tr=83.83E-9) TEXT 384 -248 Left 0 !.model dx D(Is=800.0E-18) TEXT -496 752 Left 0 ;.model qmo NPN(IS=800.0E-18 BF=1000 CJC=1E-15 TR=102.5E-9) TEXT 384 720 Left 0 !.param RP=7.087k TEXT -496 720 Left 0 ;.param RP=6.667k TEXT -496 784 Left 0 ;.model qoc NPN(IS=800.0E-18 BF=103.5E3 CJC=1E-15 TF=11.60E-12 TR=48.19E-9) TEXT 368 -152 Left 0 ;_PARAMETERS COMMON TO BOTH MODELS TEXT 368 816 Left 0 ;_PARAMETERS FOR ORCAD MODEL TEXT -512 816 Left 0 ;_PARAMETERS FOR TI MODEL