approx.txt

MATLAB CODE FOR SIMULATION OF A SUCCESSIVE APPROXIMATION CONVERTER

help file, text only version.


MATLAB CODE FOR SIMULATION OF A
SUCCESSIVE APPROXIMATION CONVERTER

FABRIZIO CONSO

The code works for the simulation of a successive approximation converter, 
both for static and dynamic characterization. 
An error is introduced in the form of finite slew-rate and bandwidth of the necessary DAC.
This is taken from these general node equations that usefully describe the rising time of a node voltage:

V_o (t)  = SR * t                                      if t < t_slew  ,      
V_o (t)  = <V>_o - deltaV * e^(-(T-t_slew)/(tau))      if t > t_slew  ,
t_slew= <V>_o/SR * tau   



Then a real case is analyzed: a resistive binary DAC with real and ideal resistors and voltage reference.
The .zip file contains these files: