VHDL-AMS is a derivative of the

hardware description language In computer engineering, a hardware description language (HDL) is a specialized computer language used to describe the structure and behavior of electronic circuits, and most commonly, digital logic circuits. A hardware description language en ...

VHDL The VHSIC Hardware Description Language (VHDL) is a hardware description language (HDL) that can model the behavior and structure of digital systems at multiple levels of abstraction, ranging from the system level down to that of logic gate ...

(IEEE standard 1076-1993). It includes analog and mixed-signal extensions (AMS) in order to define the behavior of analog and mixed-signal systems (IEEE 1076.1-1999). The VHDL-AMS standard was created with the intent of enabling designers of analog and mixed signal systems and integrated circuits to create and use modules that encapsulate high-level behavioral descriptions as well as structural descriptions of systems and components.Christen E., Bakalar K.,"VHDL-AMS-a hardware description language for analog and mixed-signal applications",Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on ee also Circuits and Systems II: Express Briefs, IEEE Transactions onVolume 46, Issue 10, Oct. 1999, pp. 1263 - 1272. VHDL-AMS is an industry standard modeling language for mixed signal circuits. It provides both continuous-time and event-driven modeling semantics, and so is suitable for analog, digital, and mixed analog/digital circuits. It is particularly well suited for verification of very complex analog, mixed-signal and

radio frequency Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around to around . This is roughly between the up ...

integrated circuits.

Code example

In VHDL-AMS, a design consists at a minimum of an ''entity'' which describes the interface and an ''architecture'' which contains the actual implementation. In addition, most designs import library modules. Some designs also contain multiple architectures and ''configurations''. A simple ideal

diode A diode is a two-terminal electronic component that conducts current primarily in one direction (asymmetric conductance); it has low (ideally zero) resistance in one direction, and high (ideally infinite) resistance in the other. A diod ...

in VHDL-AMS would look something like this: library IEEE; use IEEE.math_real.all; use IEEE.electrical_systems.all; -- this is the entity entity DIODE is generic (iss : current := 1.0e-14; af : real := 1.0; kf : real := 0.0); port (terminal anode, cathode : electrical); end entity DIODE; architecture IDEAL of DIODE is quantity v across i through anode to cathode; constant vt : voltage := 0.0258; begin i

iss * (exp(v/vt) - 1.0); end architecture IDEAL;

VHDL-AMS Simulators

* ANSYS Simplorer *

Cadence In Western musical theory, a cadence (Latin ''cadentia'', "a falling") is the end of a phrase in which the melody or harmony creates a sense of full or partial resolution, especially in music of the 16th century onwards.Don Michael Randel (199 ...

Virtuoso AMS Designer * Dolphin Integration SMASH *

Mentor Graphics Siemens EDA is a US-based electronic design automation (EDA) multinational corporation for electrical engineering and electronics, headquartered in Wilsonville, Oregon. Founded in 1981 as Mentor Graphics, the company was acquired by Siemens i ...

Questa ADMS * Mentor Graphics SystemVision *

Synopsys Synopsys is an American electronic design automation (EDA) company that focuses on silicon design and verification, silicon intellectual property and software security and quality. Products include tools for logic synthesis and physical de ...

SaberRD

Code example

VHDL-AMS Simulators

References

See also