Sigma-Delta ADC, From Behavioral Model to Verilog and VHDL 1.0

For a full description of the models, refer to the September 2007 MATLAB Digest article.http://www.mathworks.com/company/newslette...sigmadelta.htmlWe present a series of Simulink models to design a high-level behavioral model of a Sigma-Delta ADC. The high-level behavioral model has an Analog section and a Digital section that comprises a digital filter. We partition the digital filter into three cascade filters that use a total of 10 times less filter coefficients than the original filter. We then elaborate the first filter in the cascade in such a way that it requires no multiplications for implementation. We convert our design to fixed-point. We then proceed to generate VHDL code for our elaborated filter using Simulink HDL coder. This is an example of Model-Based Design.

Requirements:	No special requirements
Platforms:	Matlab
Keyword:	Cascade,  Coder,  Coefficients,  Convert,  Design,  Elaborate,  Elaborated,  Filters,  Fixedpoint,  Implementation,  Modelbased,  Multiplications,  Original,  Proceed,  Requires,  Times,  Total
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