diff options
Diffstat (limited to '887/CH14/EX14.7/14_7.sce')
| -rwxr-xr-x | 887/CH14/EX14.7/14_7.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/887/CH14/EX14.7/14_7.sce b/887/CH14/EX14.7/14_7.sce new file mode 100755 index 000000000..282206aef --- /dev/null +++ b/887/CH14/EX14.7/14_7.sce @@ -0,0 +1,28 @@ +//ex14.7
+V_in=0;
+I_B_max=100*10^-9; //maximum bias current
+I_os_max=40*10^-9; //maximum offset current magnitude
+V_os_max=2*10^-3; //maximum offset voltage
+R_1=10*10^3;
+R_2=100*10^3;
+//we approach in such a way to calculate output voltage due to each of dc sources and using superposition
+//1)OFFSET-VOLTAGE
+//As we place offset voltage at noninverting input
+V_o_osV_max=-(1+(R_2/R_1))*(-V_os_max);
+V_o_osV_min=-(1+(R_2/R_1))*V_os_max;
+//2)BIAS-CURRENT SOURCES
+//assuming ideal opamp conditions
+V_i=0;
+I_1=0;
+I_2=-I_B_max;
+V_o_bias_max=-R_2*I_2-R_1*I_1;
+V_o_bias_min=0; //no minimum value of I_B is specified
+//3)OFFSET-CURRENT SOURCE
+//by analysis as in bias-current sources
+V_o_osI_max=R_2*I_os_max/2;
+V_o_osI_min=-R_2*I_os_max/2;
+
+V_o_max=V_o_osV_max+V_o_bias_max+V_o_osI_max; //maximum output volage
+V_o_min=V_o_osV_min+V_o_bias_min+V_o_osI_min; //minimum output voltage
+disp(V_o_max*10^3,'Maximum output voltage in milli-volts')
+disp(V_o_min*10^3,'Minimum output voltage in milli-volts')
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