Carbon nanotube field effect transistorcntfet is an promising alternative of an conventional cmos technology in future. However, there is very little literature discussing the procedures to use cntfet for developing vlsi circuits. Audience this manual is intended for design engineers who use starhspice to develop, test, analyze, and. To establish a simple and high accuracy cntfet model in hspice, based on the semiclassical model of cntfet, the relationship between selfconsistent electric potential and carrier density is. The cntfet model works for mosfet like cnfet device. Tips for using hspice university of california, berkeley. Hspice mockups have been achieved on the subtractor designed using the modelled cntfet. Im doing schematic and simulation of opamp circuit using synopsys hspice 90nm technology. Stanford university virtualsource carbon nanotube field. Currently cntfets have been used for various applications in building vlsi circuits. The linked sites, articles and presented information are provided as a useful insight to help you decide on the type of engineering expert you might need. Hspice simulation and analysis user guide version y2006. If its name contains version xxplus, it describes the actual code status, found at the date of issue in the git source code management scm tool.
Cntfet sb cntfet 4, the conventional cntfet c cntfet featuring a doping profile similar to nmosfet 5, the dualgate cntfet exhibits n or ptype unipolar behavior tunable by electrostatic doping 6 and the tunneling cntfet 7. Hspice tutorial university of california, berkeley. Stanford cnfet model hspice stanford nanoelectronics lab. Cntfet sbcntfet 4, the conventional cntfet ccntfet featuring a doping profile similar to nmosfet 5, the dualgate cntfet exhibits n or ptype unipolar behavior tunable by electrostatic doping 6 and the tunneling cntfet 7. Oct 04, 2014 carbon nanotube field effect transistor cntfet is an promising alternative of an conventional cmos technology in future. A compact virtualsource model for carbon nanotube field. Significant problems with ac sensitivities in 3f2 only have been fixed.
Simulation results were carried out using hspice based on the cntfet model in 32 nanometer technology in different values of vdd at room temperature. How to use this manual the manual is a work in progress. Intrinsic elements chishuen lee, eric pop, senior member, ieee, aaron d. Cntfet hspice models are selected from 22 and 32nm bsim ptm predictive technology model simosfet, respectively. The page numbers in the rest of this document refer to this manual. Hspice is just a program that takes in a netlist a simple text. Although spice comes in many flavors you think thats a bad pun, keep reading, we strongly. Hspice also has specific file naming conventions to indicate the function of each file. A hspice model of carbon nanotube field effect transistor.
Pdf modelling and characterization of cntfet using. Spice reads in a list of circuit nodes and the elements between. Starhspice quick reference guide 35 if a capacitor model exists using the same name as a parameter for capval, the model name is taken to avoid syntactic conflicts. Carbon nanotube field effect transistor cntfet is an promising alternative of an conventional cmos technology in future. The starhspice optimizing analog circuit simulator is a industrialgrade circuit analysis product for the simulation of electrical circuits in steadystate, transient, and frequency domains. Franklin, senior member, ieee, wilfried haensch, fellow, ieee, and h. Capacitance model see capacitance model in the starhspice manual. Philip wong, fellow, ieee abstractwe presents a datacalibrated compact model of. Hspice simulation and analysis user guide version x2005.
Its n structure albeit simple provides a behavior like. This manual contains the reference material needed when working with special circuit analyses in pspice. Spice was originally created when punchcards were the primary method of computer input. For more details on hspice input file format, please refer to the.
Capnxxx for nodal capacitance output, hspice prints or plots the capacitance of the specified node nxxxx. Before running hspice, users should execute the command source usrclassee dot. The subject of this paper is the convetional cntfet. It models voltage controlled current source i btbt in order to evaluate the device subthreshold behaviour and the static power consumption. Related documents the following documents pertain to. The contents of this file appear later in this section. Input parameters for demonstration input value type 1 s 10 nm w 1.
A compact virtualsource model for carbon nanotube fieldeffect transistors in the sub10nm regimepart i. With over 500,000 copies distributed so far, many users have reported. However, you will need to explicitly command hspice to generate the extra. Brief introduction to hspice simulation wojciech giziewicz 1 introduction this document is based on one written by ihsan djomehri, spring 1999. Overview of mosfet models mosfet output templates ideally, m1 one finger and m2 five fingers should have same values of channel current since their w and l values are same, but these values are different because for the fingered mosfets, the channel current, effective. If you have questions, read the section on workstation basics later in this handout. This manual is not a book about learning spice usage, however the novice user may. Included in this manual are detailed command descriptions, startup option definitions, and a pspice your microsoft windows users guide. M multiplier used to simulate multiple parallel capacitors. This manual is intended to provide a complete description of ngspices functionality, features, commands, and procedures. Modelling and characterization of cntfet using hspice currently cntfets have been used for various applications in building vlsi circuits. If you are not familiar with one of these editors, be sure to attend one of the athena minicourses offered andor get a hold of a manual for emacs or vi.
However, there is very little literature discussing the. Hspice elements and device models manual version x2005. Nisha sarwade 50 international journal of emerging trends in electrical and electronics ijetee issn. As far as it is known, this is the first attempt to design half subtractor and full subtractor using cntfet. Results of the perfect design has been performed in 32nm technology and on comparison with a cmos technology based subtractor. Awaves is a program that allows you to graphically plot the results of the hspice analysis. Multiple analyses and plots in spice2 emulation mode under 3f2 and earlier. Audience this manual is intended for design engineers who use star hspice to develop, test, analyze, and modify circuit designs. Carbon nanotubes are becoming more and more popular due to its mechanical and electrical properties. This manual generally follows the conventions used in the microsoft windows users guide. Originally developed at berkeley in the late 60s and early 70s, spice has evolved into one of the tools of choice for circuit simulation.