LTspice Symbols

Included in LTspice examples directory...

...\LTspiceIV\examples\Educational\MC1648.asc ...Jim Thompson

I need to simulate an analog circuit but I could not find any orcad pspice model for MC1648. Do you happen to have any? It would be a big help if you can share it here.

On Sun, 4 Feb 2018 22:39:13 -0800 (PST), Aadam wrote:

I designed the MC1648 before there was a Spice program (mid 1960's). The only thing I can find that might be useful to you is the following LTspice schematic file... which I suspect was ginned up by Mike Engelhardt himself:

Version 4 SHEET 1 1348 1188 WIRE 128 32 -400 32 WIRE 320 32 128 32 WIRE -736 64 -816 64 WIRE -528 64 -736 64 WIRE -400 64 -400 32 WIRE -400 64 -528 64 WIRE -256 64 -400 64 WIRE -128 64 -256 64 WIRE -48 64 -128 64 WIRE 16 64 -48 64 WIRE 128 64 128 32 WIRE -128 80 -128 64 WIRE 16 80 16 64 WIRE 320 80 320 32 WIRE -816 96 -816 64 WIRE -736 96 -736 64 WIRE 128 128 128 64 WIRE -256 144 -256 64 WIRE -528 160 -528 64 WIRE 16 176 16 160 WIRE 64 176 16 176 WIRE -48 192 -48 64 WIRE 16 192 16 176 WIRE -816 208 -816 176 WIRE -592 208 -816 208 WIRE 320 208 320 160 WIRE -816 224 -816 208 WIRE -128 240 -128 160 WIRE -112 240 -128 240 WIRE 96 240 80 240 WIRE -48 304 -48 288 WIRE -16 304 -48 304 WIRE 16 304 16 288 WIRE 16 304 -16 304 WIRE -816 320 -816 304 WIRE -528 320 -528 256 WIRE -528 320 -816 320 WIRE 96 320 96 240 WIRE 96 320 -528 320 WIRE -128 336 -128 240 WIRE 128 368 128 224 WIRE 160 368 128 368 WIRE -464 384 -544 384 WIRE -320 384 -464 384 WIRE -192 384 -320 384 WIRE -816 400 -816 320 WIRE -464 400 -464 384 WIRE -400 400 -400 64 WIRE -736 448 -736 176 WIRE -736 448 -752 448 WIRE -656 448 -736 448 WIRE -528 448 -656 448 WIRE -320 448 -320 384 WIRE -320 448 -336 448 WIRE -736 512 -736 448 WIRE -464 512 -464 496 WIRE -432 512 -464 512 WIRE -400 512 -400 496 WIRE -400 512 -432 512 WIRE -432 528 -432 512 WIRE -16 544 -16 304 WIRE 128 544 128 368 WIRE -336 560 -352 560 WIRE -256 560 -256 224 WIRE -256 560 -272 560 WIRE -208 560 -256 560 WIRE -816 576 -816 496 WIRE -208 576 -208 560 WIRE -432 624 -432 608 WIRE -128 624 -128 432 WIRE -128 624 -144 624 WIRE -736 656 -736 576 WIRE -128 656 -128 624 WIRE -352 672 -352 560 WIRE -352 672 -368 672 WIRE -352 688 -352 672 WIRE -208 688 -208 672 WIRE -816 784 -816 656 WIRE -736 784 -736 720 WIRE -736 784 -816 784 WIRE -432 784 -432 720 WIRE -432 784 -736 784 WIRE -208 784 -208 768 WIRE -208 784 -432 784 WIRE -128 784 -128 736 WIRE -128 784 -208 784 WIRE -16 784 -16 624 WIRE -16 784 -128 784 WIRE 128 784 128 624 WIRE 128 784 -16 784 WIRE -736 816 -736 784 WIRE -656 816 -656 448 WIRE -544 816 -544 384 WIRE -352 816 -352 768 WIRE -256 816 -256 560 WIRE -256 832 -256 816 WIRE -736 848 -736 816 WIRE -352 848 -352 816 WIRE -656 912 -656 816 WIRE -656 912 -672 912 WIRE -640 912 -656 912 WIRE -544 912 -544 816 WIRE -544 912 -576 912 WIRE -256 912 -256 896 WIRE -656 992 -656 912 WIRE -640 992 -656 992 WIRE -544 992 -544 912 WIRE -544 992 -560 992 FLAG 128 64 Vcc1 FLAG 160 368 OUT FLAG -256 816 AGC FLAG -352 816 Vee FLAG -400 32 Vcc2 FLAG -544 816 Tank FLAG -656 816 Bias FLAG -736 816 Vee1 FLAG -736 848 0 FLAG -352 848 0 FLAG -256 912 0 FLAG 320 208 0 FLAG -736 912 0 SYMBOL npn 64 128 R0 SYMATTR InstName Q1 SYMATTR Value NP SYMBOL res 112 528 R0 SYMATTR InstName R1 SYMATTR Value 300 SYMBOL npn 80 192 M0 SYMATTR InstName Q2 SYMATTR Value NP SYMBOL npn -112 192 R0 SYMATTR InstName Q3 SYMATTR Value NP SYMBOL res 0 64 R0 SYMATTR InstName R2 SYMATTR Value 400 SYMBOL res -32 528 R0 SYMATTR InstName R3 SYMATTR Value 1K SYMBOL res -144 64 R0 SYMATTR InstName R4 SYMATTR Value 2K SYMBOL res -144 640 R0 SYMATTR InstName R5 SYMATTR Value 1K SYMBOL npn -192 336 R0 SYMATTR InstName Q4 SYMATTR Value NP SYMBOL npn -144 576 M0 SYMATTR InstName Q5 SYMATTR Value NP SYMBOL diode -272 544 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D1 SYMATTR Value DD SYMBOL res -224 672 R0 SYMATTR InstName R6 SYMATTR Value 600 SYMBOL npn -336 400 M0 SYMATTR InstName Q6 SYMATTR Value NP SYMBOL npn -528 400 R0 SYMATTR InstName Q7 SYMATTR Value NP SYMBOL res -368 672 R0 SYMATTR InstName R7 SYMATTR Value 25K SYMBOL npn -368 624 M0 SYMATTR InstName Q8 SYMATTR Value NP SYMBOL res -448 512 R0 SYMATTR InstName R8 SYMATTR Value 200 SYMBOL npn -592 160 R0 SYMATTR InstName Q9 SYMATTR Value NP SYMBOL diode -752 656 R0 SYMATTR InstName D2 SYMATTR Value DD SYMBOL res -832 560 R0 SYMATTR InstName R9 SYMATTR Value 1K SYMBOL res -832 208 R0 SYMATTR InstName R10 SYMATTR Value 2K SYMBOL res -832 80 R0 SYMATTR InstName R11 SYMATTR Value 2K SYMBOL npn -752 400 M0 SYMATTR InstName Q11 SYMATTR Value NP SYMBOL res -752 80 R0 SYMATTR InstName R12 SYMATTR Value 1K SYMBOL res -272 128 R0 SYMATTR InstName R13 SYMATTR Value 25K SYMBOL cap -272 832 R0 WINDOW 3 25 59 Left 2

SYMATTR InstName C1 SYMBOL voltage 320 64 R0 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL cap -672 896 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2

SYMBOL ind -544 976 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName L1

SYMBOL cap -576 896 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 10p SYMBOL diode -752 512 R0 SYMATTR InstName D3 SYMATTR Value DD TEXT -168 824 Left 2 !.model DD D(Rs=20 Cjo=5p)\n.model NP NPN(Bf=150 Cjc=3p Cje=3p Rb=10) TEXT 184 472 Left 2 !.tran 0 1.9m 0 1u startup TEXT -464 976 Left 1 ;This example schematic is supplied for informational/educational purposes only.

...Jim Thompson

Netlist...

• C:\LTspiceIV\examples\Educational\MC1648.asc Q1 Vcc1 N001 OUT 0 NP R1 OUT 0 300 Q2 N001 N004 N005 0 NP Q3 Vcc1 N003 N005 0 NP R2 Vcc1 N001 400 R3 N005 0 1K R4 Vcc1 N003 2K R5 N010 0 1K Q4 N003 Tank N010 0 NP Q5 AGC N010 N012 0 NP D1 AGC N007 DD R6 N012 0 600 Q6 Vcc1 Tank N006 0 NP Q7 Tank Bias N006 0 NP R7 N007 0 25K Q8 N009 N007 0 0 NP R8 N006 N009 200 Q9 Vcc1 N002 N004 0 NP D2 N011 0 DD R9 N008 0 1K R10 N002 N004 2K R11 Vcc1 N002 2K Q11 N004 Bias N008 0 NP R12 Vcc1 Bias 1K R13 Vcc1 AGC 25K

V1 Vcc1 0 5

C3 Tank Bias 10p D3 Bias N011 DD .model D D .lib C:\LTspiceIV\lib\cmp\standard.dio .model NPN NPN .model PNP PNP .lib C:\LTspiceIV\lib\cmp\standard.bjt .model DD D(Rs=20 Cjo=5p) .model NP NPN(Bf=150 Cjc=3p Cje=3p Rb=10) .tran 0 1.9m 0 1u startup

• This example schematic is supplied for informational/educational purposes only. .backanno .end ...Jim Thompson