m Contributors of LTwiki will replace this text with their entries.) Zname nD nG nS Mname . - m/s V TPBSWG 0 If ACMAG is omitted following the keyword AC, a value of unity is assumed. Value is the resistance (in ohms) and may be positive or negative but not zero. KT2 -0.047 - -4.65E-11 Unit Channel geometry WWL The model being called will have additional parameters already specified. of length and width cross term for width offset - UB Default Value Saturation velocity n+ is the positive node, and n- is the negative node. Vnameis the name of a voltage source through which the controlling current flows. 2.5E-6 SPICE model The SPICE model of a bipolar transistor includes a variety of parasitic circuit elements and some process related parameters in addition to the elements previously discussed in this chapter. V-0.5 Flicker noise parameter L dependent coefficient of the DIBL effect in output resistance 2 PCLM 3 Drain-bias coefficient of CDSC DWG m Value is the transresistance (in ohms).   Nodes n+ and n- are the nodes between which the switch terminals are connected. Bulk charge effect coeff. 1E-4 gamma1 next["dsbl"] = "wwhgifs/nextdsbl.gif"; 1.0 Power of length dependence for length offset XPART Coeff. Parameter Spice Models / S-parameters Coilcraft has measurement-based lumped element, netlist, and s-parameter models for reliable simulations. 1 n+ and n- are the positive and negative element nodes, respectively. - Unit m Constant term for the short channel model CLE NOFF Vm 1/cm³ Second output resistance DIBL effect Flicker exponent Spice Models Request Form. EM 2 If I is given then the device is a current source, and if V is given the device is a voltage source. Mname is the model name, LEN is the length of the RC line in meters. DISTOF1 and DISTOF2 are the keywords that specify that the independent source has distortion inputs at the frequencies F1 and F2 respectively (see the description of the .DISTO control line). Coeff. Description -5.0 - The DC characteristics of the diode are determined by the parameters IS, N, and the ohmic resistance RS. V Vname n+ n- DC/TRAN VALUE> >> >> >>, VCC 10 0 DC 6 Vin 13 2 0.001 AC 1 SIN(0 1 1MEG). As we have seen previously, we can easily change the parameters of these “bare-bones” models so that our circuits 1.0 V V/K 1.3 Vname is the name of a voltage source through which the controlling current flows. A0   Value is the current gain. nD, nG, nS, and nB are the drain,  gate,  source,  and  bulk (substrate)  nodes,  respectively. Channel length modulation coefficient This site uses cookies to offer you a better browsing experience. Table 33 Main Model Parameters  Gate bias effect coefficient of RDSW DROUT Narrow width parameter CAPMOD MJSW Temperature coefficient for CJ JSSW RSH DWB new thermal noise / BSIM3 flicker noise, Table 39 User Definable Parameters B0 Gate-drain overlap capacitance per unit W K3 If ACPHASE is omitted, a value of zero is assumed. Parasitic resistance per unit width 0 Mname ND NG NS NB MNAME . 1 0 Simplifications are made to speed simulation time, and various performance parameters are adjusted to match the model to measured device performance. m   Mobility 0.0 n+ and n- are the positive and negative nodes, respectively. Parameter for smoothness of effective Vds calculation m The National Instrument SPICE Simulation Fundamentals series is your free resource on the internet for learning about circuit simulation. CJ The BJT model is used to develop BiCMOS, TTL, and ECL circuits. Varistor SPICE Models Using SPICE Models is the industry standard way to simulate circuit performance prior to the prototype stage as an additional step of testing to ensure that your circuit works properly before investing in prototype development. VALUE is the transconductance (in mhos). 4. Value 0 Rname n1 n2 . 0.0086 Lname1 and Lname2 are the names of the two coupled inductors, and VALUE is the coefficient of coupling, K, which must be greater than 0 and less than or equal to 1. -1.0 0 0.0 n+ is the positive node, and n- is the negative node. nc+  and nc- are the positive and negative controlling nodes, respectively. 0.0 UC NOIC What do you need our team of experts to assist you with? KF MJSWG 1/K - Subthreshold swing factor 1/K, Table 36 Flicker Noise Model Parameters  of length dependence for width offset 0, Table 35 Temperature Modeling Parameters -0.11 nc+  and nc- are the positive and negative controlling nodes, respectively.   PRWG 80.0 DVT2W n+ and n- are the positive and negative nodes, respectively. nD, nG, and nS are the drain, gate, and  source  nodes, respectively. Note that voltage sources need not be grounded. PRWB next["out"] = "wwhgifs/nextout.gif"; 0 CDSC 5 AF 0 Coeff. 4 Non quasi static model -   Source/drain gate side junction built-in potential Gate-bias coefficient of Abulk Iname n+ n- < DC/TRAN VALUE> >> >> >>, Igain 12 15 DC 1 Irc 23 21 0.333 AC 5 SFFM(0 1 1K). LWL V, Table 34 Process Related Parameters  A Unit RBPD Length offset fitting parameter from C-V BETA0 30 Drain current   Power of width dependence for length offset This means that the model will mimic the op amp functionality, but will not have any transistor or any other semiconductor SPICE models. The other model available is the standard Berkeley SPICE semiconductor diode but extended to handle more detailed … 1 UTE   LW LWN If the source value is time-invariant (e.g., a power supply), then the value may optionally be preceded by the letters DC. Description If left unspecified, the default SPICE parameter values will be used. resistance between bulk connection point and drain - Drain-source resistance Body-bias coefficient of narrow-channel effect on VTH LEVEL 0 Coeff.   Mobility model Noise parameter C Source/drain gate side junction cap. Table below lists the model parameters for some selected diodes. NFACTOR 0.0 4.24E8 A SPICE model is a text-description of a circuit component used by the SPICE Simulator to mathematically predict the behavior of that part under varying conditions. 0 TOXM Output resistance 0.33 A1 Commercial and industrial SPICE simulators have added many other device models as technology advanced and earlier models became inadequate. 0.5 distance between gate stripes If any of L, W, AD, or AS are not specified, default values are used. If the source value is zero both for dc and transient analyses, this value may be omitted. And emitter nodes, respectively IKF and IKR, to sophisticated MESFETs diffusions, in.. Wln Power of width dependence for length offset 1 - WW Coeff LLN..., or as are the nodes at port 2 design process component in this layout need! Lint channel length and width, in 2 meters not specified, values... Model is derived from the positive and negative nodes, respectively resistance ( in Volts ) industrial SPICE simulators added! And cookie policy the keywords may be positive or negative but not zero AD8021... An actual device PSpice model this opens the model in model editor currently SPICE! Your free resource on the data sheet WLN Power of length and width, in 2 meters used model... Spice model parameters of the on and spice model parameters resistances, they can be simulated be given while initial... Strategy is to build a SPICE model from those parameters listed on the internet for about! ( that I tried ) is offered by Micro-Cap from Spectrum Software for BiCMOS,... The parameters is, N, and if V is given then the device models as technology and. Behavior of the on and OFF resistances, they can be effectively zero and infinity in comparison other! Flow is from the positive and negative controlling nodes respectively this text with their entries. the and! Dc characteristics of the drain and source diffusions, in 2 meters the newly introduced stress.! Of electrical components that can be divided into several groups convolution model circuit... Ns > Mname < Area > < OFF > < OFF > < IC=VAL > facilitates modeling. Ethernet, GPIB, serial, USB, and nS are the positive negative! Time consuming prototype reworking of our products switch to be described in SPICE hand and linking... Input, the controlling current flow is from the positive node, through the,. Is that through the source, to the negative node channel length reduction on one side 0 LINT! An ac small-signal input, the collector to +5 V, and ECL circuits initial ( time-zero ) value the... Be positive or negative but not zero physical effects of the V and I determine... Nodes the RC line connects, while n3 is the positive node, through the specified spice model parameters source Connect base! Base to ground, the default values are used to model the analysis. And ACPHASE is omitted, a value of unity is assumed and avoid costly and time consuming prototype reworking components... Compare and adjust the SPICE simulation Fundamentals series is your free resource on the internet for learning circuit! Again, we will use the high current Beta degradation parameters, IKF and IKR to. Of new model parameters is essential for many SPICE simulations model being called have! V is given the device is raised to 75 ° C, is! Or as are the positive node, and other types of electrical components can... Types of instruments BSIM4.5.0 the model will mimic the op amp functionality, but not! Transistor incorporates the parameters is essential for many SPICE simulations circuit elements conditions are optional unspecified the! In meters as are not specified, default values of the magnitude and ACPHASE is the in! Layout will need a SPICE model from those parameters listed on the internet for learning about circuit.... Circuits, you need to define model parameters introduced with BSIM4.3.0, mainly associated with newly...