Version 4
SHEET 1 1968 1356
WIRE -928 -96 -928 -160
WIRE -928 32 -928 -16
WIRE -928 448 -928 416
WIRE -928 576 -928 528
WIRE -896 160 -896 112
WIRE -896 272 -896 240
WIRE -784 -160 -928 -160
WIRE -784 16 -784 -160
WIRE -768 416 -928 416
WIRE -752 160 -752 112
WIRE -752 272 -752 240
WIRE -672 176 -672 -16
WIRE -672 208 -672 176
WIRE -640 96 -640 48
WIRE -624 -16 -672 -16
WIRE -624 16 -784 16
WIRE -624 48 -640 48
WIRE -608 416 -768 416
WIRE -608 480 -608 416
WIRE -608 576 -608 544
WIRE -528 416 -608 416
WIRE -528 464 -528 416
WIRE -528 576 -528 544
WIRE -400 48 -432 48
WIRE -320 416 -528 416
WIRE -320 480 -320 416
WIRE -320 576 -320 560
WIRE -304 -16 -432 -16
WIRE -304 48 -320 48
WIRE -304 48 -304 -16
WIRE -256 -16 -304 -16
WIRE -256 16 -432 16
WIRE -256 48 -256 16
WIRE -256 176 -672 176
WIRE -256 176 -256 128
WIRE -96 -160 -784 -160
WIRE -96 -32 -128 -32
WIRE -96 416 -144 416
WIRE -96 480 -96 416
WIRE -96 576 -96 512
WIRE -48 480 -96 480
WIRE -48 512 -96 512
WIRE -16 -320 -16 -336
WIRE -16 -208 -16 -320
WIRE -16 32 -16 16
WIRE 80 -320 -16 -320
WIRE 80 -304 80 -320
WIRE 80 -208 80 -224
WIRE 128 496 48 496
WIRE 128 496 128 416
WIRE 144 80 144 16
WIRE 144 112 144 80
WIRE 144 256 144 192
WIRE 176 80 144 80
WIRE 256 416 128 416
WIRE 256 480 256 416
WIRE 256 576 256 560
FLAG -896 272 0
FLAG -752 272 0
FLAG -896 112 Vcc
FLAG -752 112 Vdd
FLAG -928 32 0
FLAG -928 -160 in
FLAG 144 256 0
FLAG -128 -32 0
FLAG -16 32 Vdd
FLAG -16 -336 Vcc
FLAG 176 80 out
FLAG -928 576 0
FLAG -320 576 0
FLAG -768 416 tanh_out
FLAG -96 576 0
FLAG 256 576 0
FLAG -144 416 in
FLAG 256 416 ota_out
FLAG -528 576 0
FLAG -608 576 0
FLAG -640 96 Vdd
FLAG -256 -16 Vcc
FLAG -672 208 0
SYMBOL voltage -896 144 R0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage -752 144 R0
SYMATTR InstName V2
SYMATTR Value -15
SYMBOL voltage -928 -112 R0
WINDOW 3 26 122 Left 0
WINDOW 123 26 94 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value 0
SYMATTR Value2 AC 1
SYMATTR InstName V3
SYMBOL res 128 96 R0
SYMATTR InstName R6
SYMATTR Value 1
SYMBOL res 64 -320 R0
SYMATTR InstName R7
SYMATTR Value {Rbias}
SYMBOL res -336 464 R0
SYMATTR InstName R2
SYMATTR Value 1
SYMBOL bi2 -928 448 R0
SYMATTR InstName B1
SYMATTR Value I=Ibias*tanh(20*V(in))
SYMBOL res 240 464 R0
SYMATTR InstName R3
SYMATTR Value 1
SYMBOL ota -16 496 R0
WINDOW 3 94 -119 Center 0
WINDOW 123 -12 -149 Center 0
SYMATTR Value G={0.01}  Iout={Ibias}  Vhigh={14} Vlow={-14} ref={0}
SYMATTR Value2 Rout={7.5e3/Ibias} Cout={5p}
SYMATTR InstName A1
SYMBOL res -544 448 R0
SYMATTR InstName R4
SYMATTR Value {7.5e3/Ibias}
SYMBOL cap -624 480 R0
SYMATTR InstName C1
SYMATTR Value 5p
SYMBOL lm3080 -16 -96 R0
SYMATTR InstName U1
SYMBOL res -272 32 R0
WINDOW 0 -29 44 Left 0
WINDOW 3 -22 72 Left 0
SYMATTR InstName R1
SYMATTR Value 10
SYMBOL res -304 32 R90
WINDOW 0 59 118 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R5
SYMATTR Value 750k
SYMBOL lm3080_ -528 0 R0
SYMATTR InstName X1
TEXT -928 328 Left 0 !.op
TEXT -936 352 Left 0 !.dc V3 -0.2 0.2 0.001
TEXT -936 384 Left 0 !.include ota.lib
TEXT -928 -336 Left 0 ;TRANSCONDUCTANCE GAIN TEST\n \nIout = Ibias*tanh(20*V(in))
TEXT -464 -216 Left 0 !.param Ibias=0.5m\n.param Rbias=(15+15-1.5)/Ibias
TEXT -864 448 Left 0 ;B-SOURCE
TEXT -16 320 Left 0 ;A-OTA