Laboratory Manual - King Fahd University of Petroleum and Minerals
Laboratory Manual - King Fahd University of Petroleum and Minerals
Laboratory Manual - King Fahd University of Petroleum and Minerals
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Diode Models<br />
The diode element model is given in Figure 1. The element statement format is given by<br />
Dname NA NC MNAME [AREA]<br />
NA<br />
MNAME<br />
NC<br />
I D<br />
The associated model statement is<br />
Figure 1: Junction Diode.<br />
.MODEL MNAME D [PNAME1=PVAL1 PNAME2=PVAL2…]<br />
The anode <strong>of</strong> the diode is connected to NA; the cathode to NC. MNAME is an<br />
alphanumeric model designation for the device. Detailed model parameters are provided<br />
in Table 1.<br />
Bipolar Junction Transistor<br />
The npn <strong>and</strong> pnp transistor element models are shown in Figure 2. The element statement<br />
format is<br />
Qname NC NB NE MNAME [AREA]<br />
NC<br />
NC<br />
NB<br />
NB<br />
NE<br />
NPN<br />
Figure 2: BJT types.<br />
NE<br />
PNP<br />
The associated model statements is<br />
or<br />
.MODEL MNAME npn [PNAME1=PVAL1 PNAME2=PVAL2…]<br />
.MODEL MNAME pnp[PNAME1=PVAL1 PNAME2=PVAL2…]<br />
4