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Article: Mixed analog-digital simulation. (Cover Story)
- Article from:
- EDN
- Article date:
- September 1, 1994
- Author:
CopyrightCOPYRIGHT 1994 Reed Business Information, Inc. (US). This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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THE MORE COMPLEX YOUR DESIGN, THE GREATER the chance that some parts of the system won't function properly together or function in all cases. Simulation provides designers with a way to test designs and verify a system before building the hardware.
The standards for modeling digital designs are VHDL, Verilog, and gate-level schematic design. For analog, the standard is Spice. Now, extensions to VHDL and Verilog extend the hardware description languages (HDLs) to analog design. Although the standards aren't finalized, products are emerging. You can describe your designs at any level from transistors through behavioral descriptions for both analog and digital. ...