Version 4 SHEET 1 2876 1032 WIRE 2480 -368 2480 -432 WIRE 1280 -304 1280 -352 WIRE 1552 -288 1552 -352 WIRE 2160 -288 2160 -352 WIRE 2480 -240 2480 -288 WIRE 2480 -224 2480 -240 WIRE 2160 -176 2160 -208 WIRE 2304 -176 2160 -176 WIRE 2416 -176 2304 -176 WIRE 1552 -112 1552 -208 WIRE 1600 -112 1552 -112 WIRE 2272 -112 1600 -112 WIRE 1280 -64 1280 -224 WIRE 1328 -64 1280 -64 WIRE 1760 -64 1328 -64 WIRE 2656 -32 2656 -112 WIRE 1280 0 1280 -64 WIRE 1552 0 1552 -112 WIRE 1888 0 1888 -48 WIRE 2160 0 2160 -176 WIRE 320 16 272 16 WIRE 608 16 560 16 WIRE 2480 16 2480 -128 WIRE 2544 16 2480 16 WIRE 2592 16 2544 16 WIRE 1216 48 1184 48 WIRE 1648 48 1616 48 WIRE 1760 48 1760 -64 WIRE 1824 48 1760 48 WIRE 2272 48 2272 -112 WIRE 2272 48 2224 48 WIRE -288 64 -288 0 WIRE 272 64 272 16 WIRE 608 64 608 16 WIRE 224 80 176 80 WIRE 704 80 656 80 WIRE 944 112 944 48 WIRE 1280 144 1280 96 WIRE 1408 144 1280 144 WIRE 1424 144 1408 144 WIRE 1552 144 1552 96 WIRE 1552 144 1424 144 WIRE 1888 144 1888 96 WIRE 2016 144 1888 144 WIRE 2032 144 2016 144 WIRE 2160 144 2160 96 WIRE 2160 144 2032 144 WIRE 2656 160 2656 64 WIRE 2784 160 2656 160 WIRE 224 176 224 128 WIRE 272 176 272 144 WIRE 432 176 272 176 WIRE 608 176 608 144 WIRE 608 176 432 176 WIRE 656 176 656 128 WIRE -288 192 -288 144 WIRE -288 192 -352 192 WIRE -352 208 -352 192 WIRE 112 208 112 144 WIRE -288 240 -288 192 WIRE 432 240 432 176 WIRE 944 240 944 192 WIRE 1040 240 944 240 WIRE 944 272 944 240 WIRE 1408 272 1408 144 WIRE 2016 272 2016 144 WIRE 2480 272 2480 16 WIRE 2656 272 2656 160 WIRE 1040 320 1040 240 WIRE 1040 320 1008 320 WIRE 1088 320 1040 320 WIRE 1344 320 1088 320 WIRE 1952 320 1344 320 WIRE 112 352 112 288 WIRE 432 368 432 320 WIRE -288 384 -288 320 WIRE 944 448 944 368 WIRE 1408 448 1408 368 WIRE 2016 448 2016 368 WIRE 2480 448 2480 352 WIRE 2656 448 2656 352 FLAG 1280 -352 VCC FLAG 1424 144 E1 FLAG 1552 -352 VCC FLAG 1184 48 IN+ FLAG 1648 48 IN- FLAG 1328 -64 OUT1+ FLAG 1600 -112 OUT1- FLAG -352 208 0 FLAG -288 0 VCC FLAG -288 384 VEE FLAG 560 16 IN- FLAG 432 368 0 FLAG 224 176 0 FLAG 656 176 0 FLAG 704 80 VD FLAG 432 176 VCM FLAG 176 80 VD FLAG 320 16 IN+ FLAG 112 352 0 FLAG 112 144 VD FLAG 1888 -48 VCC FLAG 2032 144 E4 FLAG 2160 -352 VCC FLAG 2304 -176 OUT2 FLAG 2480 -432 VCC FLAG 2656 -112 VCC FLAG 2784 160 OUT FLAG 2544 16 OUT3 FLAG 944 448 VEE FLAG 1408 448 VEE FLAG 2480 448 VEE FLAG 2656 448 VEE FLAG 944 48 0 FLAG 2480 -240 E7 FLAG 1088 320 B9 FLAG 2016 448 VEE SYMBOL npn 1216 0 R0 WINDOW 3 81 90 Left 2 SYMATTR Value npn_transistor SYMATTR InstName Q1 SYMBOL npn 1616 0 M0 WINDOW 3 95 8 Left 2 SYMATTR Value npn_transistor SYMATTR InstName Q2 SYMBOL res 1264 -320 R0 SYMATTR InstName Rc1 SYMATTR Value 20k SYMBOL res 1536 -304 R0 SYMATTR InstName Rc2 SYMATTR Value 20k SYMBOL voltage -288 48 R0 SYMATTR InstName Vps3 SYMATTR Value 15V SYMBOL voltage -288 224 R0 SYMATTR InstName Vps4 SYMATTR Value 15V SYMBOL voltage 432 224 R0 WINDOW 0 -73 13 Left 2 WINDOW 3 -63 94 Left 2 SYMATTR InstName Vcm SYMATTR Value 0V SYMBOL e 272 48 R0 SYMATTR InstName E1 SYMATTR Value 0.5 SYMBOL e 608 48 M0 SYMATTR InstName E2 SYMATTR Value -0.5 SYMBOL voltage 112 192 R0 WINDOW 0 -70 17 Left 2 WINDOW 3 -123 90 Left 2 SYMATTR InstName Vd SYMATTR Value -230µV SYMBOL npn 1344 272 R0 WINDOW 3 63 73 Left 2 WINDOW 0 62 21 Left 2 SYMATTR Value npn_transistor SYMATTR InstName Q3 SYMBOL npn 1008 272 M0 WINDOW 3 63 73 Left 2 SYMATTR Value npn_transistor SYMATTR InstName Q9 SYMBOL res 928 96 R0 SYMATTR InstName RB SYMATTR Value 28.6k SYMBOL npn 1824 0 R0 WINDOW 3 81 90 Left 2 WINDOW 0 84 23 Left 2 SYMATTR Value npn_transistor SYMATTR InstName Q4 SYMBOL npn 2224 0 M0 WINDOW 3 82 7 Left 2 WINDOW 0 84 69 Left 2 SYMATTR Value npn_transistor SYMATTR InstName Q5 SYMBOL res 2144 -304 R0 SYMATTR InstName Rc4 SYMATTR Value 3k SYMBOL npn 2592 -32 R0 WINDOW 3 81 90 Left 2 SYMATTR Value npn_transistor SYMATTR InstName Q8 SYMBOL pnp 2416 -128 M180 WINDOW 0 85 28 Left 2 WINDOW 3 84 87 Left 2 SYMATTR InstName Q7 SYMATTR Value pnp_transistor SYMBOL res 2464 -384 R0 SYMATTR InstName Rc3 SYMATTR Value 2.3k SYMBOL res 2464 256 R0 SYMATTR InstName Rc5 SYMATTR Value 15.7k SYMBOL res 2640 256 R0 SYMATTR InstName Rc6 SYMATTR Value 3k SYMBOL npn 1952 272 R0 WINDOW 3 63 73 Left 2 WINDOW 0 62 21 Left 2 SYMATTR Value npn_transistor 4 SYMATTR InstName Q6 TEXT 1168 696 Left 2 !.model npn_transistor npn ( Is=18fA Bf=100 VAf=100V ) TEXT 2128 688 Left 2 !.OP TEXT -352 496 Left 2 ;Power Supplies TEXT 128 480 Left 2 ;Input Differential Signal with Common-Mode TEXT 1616 504 Left 2 ;Multi-Stage Operational Amplifier TEXT 1352 632 Left 2 ;Device Models TEXT 2048 632 Left 2 ;Spice Directives TEXT 1168 744 Left 2 !.model pnp_transistor pnp ( Is=18fA Bf=100 VAf=100V ) TEXT 2000 744 Left 2 ;.DC Vd -15V +15V 100mV TEXT 2008 800 Left 2 ;.DC Vd -5mV +5mV 10uV TEXT 2072 856 Left 2 ;.TF V(OUT) Vd TEXT 2016 912 Left 2 ;.DC Vcm -15V +15V 0.1V