h3BodyEffect

h3BodyEffect - 1 BODY EFFECT I read Vgs=1.104 volts from...

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1. BODY EFFECT I read Vgs=1.104 volts from PSPICE and the theoretical value is > vtn=vto+gam*(sqrt(vs+Phi)-sqrt(Phi)), vto=0.7, gam=0.5, vs=2, Phi=0.7; subs(%,vtn); , , , , = vtn + vto gam ( ) - + vs Φ Φ = vto 0.7 = gam 0.5 = vs 2 = Φ 0.7 1.103253823 Here's the whole plot V_Vgs 0V 0.5V 1.0V 1.5V 2.0V 2.5V 3.0V id(m1) 0A 10mA 20mA SEL>> log(id(m1)) -40 -20 0 > SIMULATION RESULTS Here is my PSPICE simulation zoomed into the vs=2 log(Id) curve I read off about Vgs=1.103 volts at turn on

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V_Vgs 1.020V 1.040V 1.060V 1.080V 1.100V 1.120V 1.137V id(m1) 0A 0.5mA 1.0mA SEL>> log(id(m1)) -27.5 -25.0 -22.5 -20.7 **** 01/27/08 11:01:40 *********** Evaluation PSpice (Nov 1999) ************** ** Profile: "SCHEMATIC1-BodyEffect" [ C:\Documents and Settings\glb\Desktop\h3\h3-SCHEMATIC1-BodyEffect.sim ] **** CIRCUIT DESCRIPTION ****************************************************************************** ** Creating circuit file "h3-SCHEMATIC1-BodyEffect.sim.cir" ** WARNING: THIS AUTOMATICALLY GENERATED FILE MAY BE OVERWRITTEN BY SUBSEQUENT SIMULATIONS *Libraries:
* Local Libraries : .LIB ".\h3.lib" * From [PSPICE NETLIST] section of pspiceev.ini file: .lib "nom.lib" *Analysis directives: .DC LIN V_Vgs 0 3 1m + V_Vs LIST 0, 1, 2

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This note was uploaded on 03/30/2009 for the course ECE 403 taught by Professor Bilbro during the Spring '08 term at N.C. State.

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h3BodyEffect - 1 BODY EFFECT I read Vgs=1.104 volts from...

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