Re: Problems with the simulation using LTSpice !!!
El lunes, 19 de agosto de 2013 01:14:06 UTC-3, sudheer escribió: is it an op amp made by u? check the w and L of each MnMos-4 put values greater than the technology limit it may work i remember in 0.7 u nmos min width was 1u Hi Sudheer, it worked ! thanks ! Joaquin On Sun, Aug 18, 2013 at 6:00 AM, Joaquin Cury biol...@gmail.comjavascript: wrote: Hi, I am trying to simulate an operational amplifier. When I click in the option write spice deck, the Electric tells me: BSIM3: mosfet Mnmos-4@1, model nmos: Effective channel width = 0 anyone know what that means ? Thanks Joaquin -- You received this message because you are subscribed to the Google Groups Electric VLSI Editor group. To unsubscribe from this group and stop receiving emails from it, send an email to electricvlsi...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups Electric VLSI Editor group. To unsubscribe from this group and stop receiving emails from it, send an email to electricvlsi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Simulation of the Electric Using LTspice !!!
Hello, I made the schematic and the layout of an oscillator but when I am trying to simulate the layout, the Electric tells me: Unkown subcircuit call in: xrresnwell@3 net@161 net@5 rnwod l=125.0*lambda w=12.0*lambda what should I do ? thanks ! joaquin -- You received this message because you are subscribed to the Google Groups Electric VLSI Editor group. To unsubscribe from this group and stop receiving emails from it, send an email to electricvlsi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Problems with the simulation using LTSpice !!!
If I remember correctly, effective channel width is the channel width after diffusion (it is not the same as the drawn channel width because diffusion 'blurs' the edges). It looks like you have a variable that is saying take your drawn channel width, add some amount for diffusion, that is your effective channel length - but that value is now less than or equal to 0. Either set the diffusion variable to zero, or make your drawn channel length bigger. On Aug 17, 2013 5:31 PM, Joaquin Cury biolyc...@gmail.com wrote: Hi, I am trying to simulate an operational amplifier. When I click in the option write spice deck, the Electric tells me: BSIM3: mosfet Mnmos-4@1, model nmos: Effective channel width = 0 anyone know what that means ? Thanks Joaquin -- You received this message because you are subscribed to the Google Groups Electric VLSI Editor group. To unsubscribe from this group and stop receiving emails from it, send an email to electricvlsi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups Electric VLSI Editor group. To unsubscribe from this group and stop receiving emails from it, send an email to electricvlsi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Simulation of the Electric Using LTspice !!!
The r is missing in capacitor on the netlist line for xcapacitor. If that
doesn't fix it, let me know, Ill break out the help file and we will get it
running!
On Aug 19, 2013 7:29 AM, Joaquin Cury biolyc...@gmail.com wrote:
El lunes, 19 de agosto de 2013 10:31:15 UTC-3, Joaquin Cury escribió:
Hello, I made the schematic and the layout of an oscillator but when I am
trying to simulate the layout, the Electric tells me:
Unkown subcircuit call in:
xrresnwell@3 net@161 net@5 rnwod l=125.0*lambda w=12.0*lambda
what should I do ?
thanks !
joaquin
Hi Travis, I simulate it again and the Electric tells me:
unkown subcircuit called in:
xcapacitor@0 net@12 net@261 capacitor_0.22pf
here is the netlist:
*** SPICE deck for cell Circuito_Oscilador_400Mhz{sch} from library
*Proyecto_Final
*** Created on dom ago 18, 2013 12:55:47
*** Last revised on lun ago 19, 2013 11:24:05
*** Written on lun ago 19, 2013 11:26:55 by Electric VLSI Design System,
*version 9.04
*** Layout tech: mocmos, foundry MOSIS
*** UC SPICE *** , MIN_RESIST 4.0, MIN_CAPAC 0.1FF
*** SUBCIRCUIT Capacitor_0_22pf FROM CELL Capacitor_0.22pf{sch}
.SUBCKT Capacitor_0_22pf P1 P2
Cpoly2cap@0 P1 P2 0.22p
* Spice Code nodes in cell cell 'Capacitor_0.22pf{sch}'
C1 P1 P2 0.22pF
.ENDS Capacitor_0_22pf
*** SUBCIRCUIT Resistor_10k FROM CELL Resistor_10k{sch}
.SUBCKT Resistor_10k L R
Rresnwell@0 R L 10k
* Spice Code nodes in cell cell 'Resistor_10k{sch}'
R1 L R 10k
.ENDS Resistor_10k
*** TOP LEVEL CELL: Circuito_Oscilador_400Mhz{sch}
Mnmos-4@0 net@12 net@92 Vss Vss NMOS L=0.4U W=2U
Mnmos-4@3 net@22 net@12 Vss Vss NMOS L=0.4U W=2U
Mnmos-4@4 net@73 net@22 Vss Vss NMOS L=0.4U W=2U
Mnmos-4@5 net@73 Act net@242 Vss NMOS L=0.4U W=2U
Mnmos-4@6 vdd net@242 Vout Vss NMOS L=0.4U W=20U
Mpmos@0 vdd net@92 net@12 vdd PMOS L=0.4U W=2U
Mpmos@3 vdd net@12 net@22 vdd PMOS L=0.4U W=2U
Mpmos@4 vdd net@22 net@73 vdd PMOS L=0.4U W=2U
XCapacito@0 net@12 net@261 Capacitor_0.22pf
XResistor@0 net@92 net@261 Resistor_10k
XResistor@1 net@261 net@73 Resistor_10k
XResistor@2 Vss net@242 Resistor_10k
* Spice Code nodes in cell cell 'Circuito_Oscilador_400Mhz{sch}'
Vdd Vdd 0 DC 5
Vss Vss 0 DC -5
VAct Act 0 DC 0 pulse (-5V 5V 0 100p 100p .5µ 1µ)
.TRAN 0.11mS 3mS
.include C:\Electric\C5_models.txt
.END
Thanks !
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Re: Simulation of the Electric Using LTspice !!!
El lunes, 19 de agosto de 2013 10:31:15 UTC-3, Joaquin Cury escribió: Hello, I made the schematic and the layout of an oscillator but when I am trying to simulate the layout, the Electric tells me: Unkown subcircuit call in: xrresnwell@3 net@161 net@5 rnwod l=125.0*lambda w=12.0*lambda what should I do ? thanks ! joaquin Hi Travis, I did what you told me but after the simulation, The electric tells me: unkown subcircuit called in: xcapacitor@0 net@12 net@261 capacitor_0.22pf I have the schematic of this capacitor and the schematic of the oscillator. The spice code of the first one is: C1 P1 P2 0.22pf and the symbol of the capacitor is a P1 P2 capacitor. I clicked in Place cell instance and put the capacitor in the schematic of the oscillator and when I am trying to simulate I have this problem. Thanks ! Joaquin -- You received this message because you are subscribed to the Google Groups Electric VLSI Editor group. To unsubscribe from this group and stop receiving emails from it, send an email to electricvlsi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
