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diff --git a/Integrated_Circuits_by_P_Raja/2-The_741_IC_OPamp.ipynb b/Integrated_Circuits_by_P_Raja/2-The_741_IC_OPamp.ipynb new file mode 100644 index 0000000..aab4fc7 --- /dev/null +++ b/Integrated_Circuits_by_P_Raja/2-The_741_IC_OPamp.ipynb @@ -0,0 +1,189 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 2: The 741 IC OPamp" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 2.1: Input_reference_current.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Ex 2.1\n", +"clc;clear;close;\n", +"format('v',6)\n", +"VCC=5;//V\n", +"IS=10^-14;//A\n", +"RS=39*1000;//ohm\n", +"VBE12=0.7;//V(Assumed)\n", +"VBE11=0.7;//V(Assumed)\n", +"VEE=-5;//V\n", +"IREF=(VCC-VBE12-VBE11-VEE)/RS*10^6;//micro A\n", +"disp(IREF,'Estimated input reference current , IREF(micro A)');\n", +"VT=25*10^-3;//V(Thermal Voltage)\n", +"VBE=VT*log(IREF*10^-6/IS);//V\n", +"IREF=(VCC-VBE-VBE-VEE)/RS*10^6;//micro A\n", +"format('v',5)\n", +"disp(IREF,'More precise value of reference current , IREF(micro A)');\n", +"//Replacing Vcc by 15 V in the original design\n", +"VCC2=15;//V\n", +"VEE2=-15;//V\n", +"IREF=(VCC2-VBE-VBE-VEE2)/RS*10^6;//micro A\n", +"VBE=VT*log(IREF*10^-6/IS);//V\n", +"R5=(VCC-VBE-VBE-VEE)/(IREF*10^-6);//ohm\n", +"R5=round(R5/1000);//kohm\n", +"disp(R5,'Value of R5(kohm) : ');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 2.2: Design_a_widlar_current_source.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Ex 2.2\n", +"clc;clear;close;\n", +"format('v',5);\n", +"IC10=20*10^-6;//A\n", +"IREF=0.5*10^-3;//A\n", +"IS=10^-14;//A\n", +"VT=25*10^-3;//V(Thermal Voltage)\n", +"R4=VT/IC10*log(IREF/IC10);//ohm\n", +"disp(R4/1000,'For Widlar current source design, the value of R4(kohm) : ');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 2.3: Slew_rate.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Ex 2.3\n", +"clc;clear;close;\n", +"format('v',5)\n", +"Gm1=10;//mA/V\n", +"Gm1=Gm1/1000;//A/V\n", +"Cc=50;//pF\n", +"Cc=Cc*10^-12;//F\n", +"Rt=10^8;//ohm(Shunting resistance with Cc)\n", +"Ao=Gm1*Rt;//unitless\n", +"fp=1/(2*%pi*Rt*Cc);//Hz\n", +"ft=Gm1/(2*%pi*Cc)/10^6;//MHz\n", +"disp(fp,'Frequency at which gain is maximum, fp in Hz');\n", +"disp(ft,'Unit gain frequency, ft(MHz)');\n", +"//Bode plot can not be plotted with the given data in the question by using scilab functions. " + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 2.4: Full_power_Bandwidth.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Ex 2.4\n", +"clc;clear;close;\n", +"format('v',6);\n", +"SR=10/10^-6;//V/s\n", +"Vout=10;//V(magnitude of output voltage)\n", +"fm=SR/(2*%pi*Vout)/1000;//kHz\n", +"disp(fm,'Full power bandwidth(kHz)');\n", +"VT=25/1000;//V(Thermal voltage)\n", +"ft=SR/(2*%pi*4*VT)/10^6;//MHz\n", +"disp(ft,'Unity gain bandwidth(MHz)');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 2.5: Output_voltage_limits.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Ex 2.5\n", +"clc;clear;close;\n", +"VCC=5;//V\n", +"VEE=-5;//V\n", +"VBE=0.6;//V\n", +"VCE23=0.6;//V\n", +"VCE_sat=0.2;//V\n", +"Vo_max=VCC-VCE_sat-VBE;//V\n", +"Vo_min=VEE+VCE_sat+VBE+VCE23;//V\n", +"disp(Vo_max,'Maximum output voltage(V)');\n", +"disp(Vo_min,'Minimum output voltage(V)');" + ] + } +], +"metadata": { + "kernelspec": { + "display_name": "Scilab", + "language": "scilab", + "name": "scilab" + }, + "language_info": { + "file_extension": ".sce", + "help_links": [ + { + "text": "MetaKernel Magics", + "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md" + } + ], + "mimetype": "text/x-octave", + "name": "scilab", + "version": "0.7.1" + } + }, + "nbformat": 4, + "nbformat_minor": 0 +} |