Version 3
SHEET 1 892 692
WIRE 360 484 288 484
WIRE 360 484 360 492
WIRE 224 476 224 484
WIRE 256 476 256 484
WIRE 288 476 288 484
WIRE 160 384 176 384
WIRE 224 452 256 452
WIRE 256 452 256 460
WIRE 256 452 288 452
WIRE 316 420 336 420
WIRE 372 420 424 420
WIRE 208 464 200 464
WIRE 200 464 200 444
WIRE 312 444 312 464
WIRE 312 464 304 464
WIRE 96 384 96 404
WIRE 96 384 136 384
WIRE 96 536 96 548
WIRE 200 444 312 444
WIRE 336 444 336 420
WIRE 336 420 352 420
WIRE 312 444 336 444
WIRE 224 384 224 452
WIRE 288 420 288 452
WIRE 288 420 296 420
WIRE 96 432 96 424
WIRE 96 516 96 480
WIRE 136 384 140 384
WIRE 492 268 492 276
WIRE 492 340 492 344
WIRE 492 344 444 344
WIRE 524 276 524 264
WIRE 524 264 564 264
WIRE 564 264 564 308
WIRE 564 308 548 308
WIRE 636 260 636 272
WIRE 508 276 508 216
WIRE 508 216 636 216
WIRE 636 216 636 240
WIRE 636 320 636 360
WIRE 636 360 540 360
WIRE 540 360 540 340
WIRE 540 276 540 240
WIRE 540 240 552 240
WIRE 552 240 552 252
WIRE 508 340 508 548
WIRE 524 420 524 340
WIRE 524 264 524 184
WIRE 524 184 524 180
WIRE 660 280 660 272
WIRE 660 272 636 272
WIRE 636 272 636 300
WIRE 444 344 444 336
WIRE 444 316 444 308
WIRE 444 280 444 268
WIRE 444 268 480 268
WIRE 224 492 224 484
WIRE 256 492 256 484
WIRE 288 492 288 484
WIRE 164 584 176 584
WIRE 224 516 256 516
WIRE 256 516 256 508
WIRE 256 516 288 516
WIRE 316 548 336 548
WIRE 372 548 424 548
WIRE 208 504 200 504
WIRE 200 504 200 524
WIRE 312 524 312 504
WIRE 312 504 304 504
WIRE 200 524 312 524
WIRE 336 524 336 548
WIRE 336 548 352 548
WIRE 312 524 336 524
WIRE 224 584 224 516
WIRE 288 548 288 516
WIRE 288 548 296 548
WIRE 256 484 224 484
WIRE 288 484 256 484
WIRE 144 584 96 584
WIRE 424 420 524 420
WIRE 424 548 508 548
WIRE 352 304 352 216
WIRE 352 216 508 216
WIRE 540 360 352 360
WIRE 352 360 352 320
WIRE 344 312 288 312
WIRE 176 476 176 384
WIRE 176 384 224 384
WIRE 176 492 176 584
WIRE 176 584 224 584
WIRE 384 352 384 344
WIRE 384 324 384 316
WIRE 384 316 360 316
WIRE 416 308 444 308
WIRE 444 308 444 300
WIRE 396 308 372 308
WIRE 280 296 288 296
WIRE 288 296 288 312
WIRE 288 312 284 312
WIRE 372 308 372 272
WIRE 372 308 360 308
WIRE 372 272 320 272
WIRE 304 272 232 272
WIRE 232 272 232 296
WIRE 264 296 232 296
WIRE 232 296 232 312
WIRE 264 312 232 312
WIRE 232 312 -36 312
WIRE 96 568 96 584
WIRE 68 480 88 480
WIRE 96 480 96 452
WIRE -24 480 -36 480
WIRE 0 524 0 480
WIRE 0 480 -4 480
WIRE 0 540 0 588
WIRE -36 312 -36 480
WIRE 16 480 48 480
WIRE 0 480 16 480
WIRE 480 268 492 268
WIRE 88 480 96 480
WIRE 96 480 128 480
FLAG 360 492 GND
FLAG 136 384 user
FLAG 552 252 GND
FLAG 524 184 out_114
FLAG 660 280 GND
FLAG 424 420 in+
FLAG 424 548 in-
FLAG 384 352 GND
FLAG 232 312 DRL_OUT
FLAG 0 588 GND
FLAG 16 480 loop
FLAG 480 268 loop1
FLAG 88 480 cm
SYMBOL RES 136 388 R270
WINDOW 0 -13 13 Left 0
WINDOW 3 -24 14 Left 0
SYMATTR InstName R1
SYMATTR Value 2K
SYMBOL res 292 424 R270
WINDOW 0 22 14 Left 0
WINDOW 3 10 14 Left 0
SYMATTR InstName R2
SYMATTR Value 2K
SYMBOL res 348 424 R270
WINDOW 0 22 13 Left 0
WINDOW 3 10 13 Left 0
SYMATTR InstName R3
SYMATTR Value 2K
SYMBOL cap 252 460 R0
WINDOW 0 6 2 Left 0
WINDOW 3 6 16 Left 0
SYMATTR InstName C1
SYMATTR Value 100pF
SYMBOL PNP 208 452 R0
WINDOW 0 13 13 Left 0
WINDOW 3 -29 18 Left 0
SYMATTR InstName Q1
SYMATTR Value 2N3906
SYMBOL NPN 304 452 M0
WINDOW 0 8 12 Left 0
WINDOW 3 -31 19 Left 0
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL RES 100 428 R180
WINDOW 0 13 23 Left 0
WINDOW 3 13 14 Left 0
SYMATTR InstName Ruser+
SYMATTR Value 1k
SYMBOL VOLTAGE 96 512 R0
WINDOW 0 12 10 Left 0
WINDOW 3 12 20 Left 0
SYMATTR InstName Vbrain
SYMATTR Value 0mV
SYMBOL VOLTAGE 96 428 R0
WINDOW 0 12 10 Left 0
WINDOW 3 12 21 Left 0
SYMATTR InstName Vbrain_ac
SYMATTR Value AC 0uV
SYMBOL Opamps\INA114 516 308 R270
WINDOW 0 9 0 Center 0
WINDOW 3 -10 1 Center 0
SYMATTR InstName U1
SYMATTR Value INA114
SYMBOL res 440 276 R0
WINDOW 0 9 10 Left 0
WINDOW 3 9 19 Left 0
SYMATTR InstName R4
SYMATTR Value 2.7777k
SYMBOL voltage 636 236 R0
WINDOW 0 6 4 Left 0
WINDOW 3 6 26 Left 0
WINDOW 39 0 0 Left 0
WINDOW 123 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 3V
SYMBOL voltage 636 296 R0
WINDOW 0 6 4 Left 0
WINDOW 3 6 26 Left 0
WINDOW 39 0 0 Left 0
WINDOW 123 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 2V
SYMBOL res 440 312 R0
WINDOW 0 9 10 Left 0
WINDOW 3 9 19 Left 0
SYMATTR InstName R5
SYMATTR Value 2.7777k
SYMBOL RES 140 580 M90
WINDOW 0 -13 13 Left 0
WINDOW 3 -24 14 Left 0
SYMATTR InstName R6
SYMATTR Value 2K
SYMBOL res 292 544 M90
WINDOW 0 22 14 Left 0
WINDOW 3 10 14 Left 0
SYMATTR InstName R7
SYMATTR Value 2K
SYMBOL res 348 544 M90
WINDOW 0 22 13 Left 0
WINDOW 3 10 13 Left 0
SYMATTR InstName R8
SYMATTR Value 2K
SYMBOL cap 252 508 M180
WINDOW 0 6 2 Left 0
WINDOW 3 6 16 Left 0
SYMATTR InstName C2
SYMATTR Value 100pF
SYMBOL PNP 208 516 M180
WINDOW 0 13 13 Left 0
WINDOW 3 -29 19 Left 0
SYMATTR InstName Q3
SYMATTR Value 2N3906
SYMBOL NPN 304 516 R180
WINDOW 0 8 12 Left 0
WINDOW 3 -31 20 Left 0
SYMATTR InstName Q4
SYMATTR Value 2N3904
SYMBOL Opamps\TLC272_5_2 352 296 M0
WINDOW 0 4 8 Left 0
WINDOW 3 4 24 Left 0
SYMATTR InstName U2
SYMATTR Value TLC272_5_2
SYMBOL cap 172 476 R0
WINDOW 0 6 2 Left 0
WINDOW 3 6 16 Left 0
SYMATTR InstName C3
SYMATTR Value 10pF
SYMBOL res 392 312 R270
WINDOW 0 9 10 Left 0
WINDOW 3 18 10 Left 0
SYMATTR InstName R9
SYMATTR Value 8.611k
SYMBOL res 380 320 R0
WINDOW 0 9 10 Left 0
WINDOW 3 9 19 Left 0
SYMATTR InstName R10
SYMATTR Value 10k
SYMBOL res 288 308 R90
WINDOW 0 18 18 Left 0
WINDOW 3 9 19 Left 0
SYMATTR InstName R11
SYMATTR Value 500k
SYMBOL cap 264 300 R270
WINDOW 0 8 9 Left 0
WINDOW 3 16 9 Left 0
SYMATTR InstName C4
SYMATTR Value 1nF
SYMBOL cap 304 276 R270
WINDOW 0 -12 9 Left 0
WINDOW 3 11 8 Left 0
SYMATTR InstName C5
SYMATTR Value 1nF
SYMBOL RES 100 572 R180
WINDOW 0 13 23 Left 0
WINDOW 3 13 14 Left 0
SYMATTR InstName Ruser-
SYMATTR Value 1k
SYMBOL VOLTAGE 72 480 R90
WINDOW 0 10 15 Left 0
WINDOW 3 -23 15 Left 0
SYMATTR InstName Vcm
SYMATTR Value AC 100mV
SYMBOL res -28 484 R270
WINDOW 0 22 13 Left 0
WINDOW 3 10 13 Left 0
SYMATTR InstName Rleg
SYMATTR Value 20k
SYMBOL cap -4 524 R0
WINDOW 0 6 2 Left 0
WINDOW 3 6 16 Left 0
SYMATTR InstName Cuser
SYMATTR Value 300pF
text 534 452 Left 0 !;dc vbrain -200mV +200mV 0.001
text 202 422 Left 0 ;any pnp, any npn:\n>=40V,>=200mA,B>=200
text -38 238 Left 0 ;EEG input ESD protection and user protection against\nworst case input stage failure (+-Ub on op-amp inputs)
text 532 442 Left 0 !.ac dec 100 0.1 100MEG
text 532 432 Left 0 !;op
text -36 286 Left 0 ;-3dB BW=562kHz
text -36 264 Left 0 ;C1=0, 200mV DC offset, 50Hz -> 130M impedance
text -36 276 Left 0 ;C1=100pF, 200mV DC offset, 50Hz -> 25.6M impedance
text 132 528 Left 0 ;DC-offset
text 202 534 Left 0 ;any pnp, any npn:\n>=40V,>=200mA,B>=200
text 384 256 Left 0 ;R9+(R4||R5) = 10k
text 252 248 Left 0 ;Driven Right Leg circuit (DRL)
text 490 370 Left 0 ;preamp G=10
text 78 372 Left 0 ;Electrode+
text 80 586 Left 0 ;Electrode-
text -74 432 Left 0 ;Right Leg electrode
text 20 426 Left 0 ;patient equivalent\ncircuit