Title :
Modeling of Operational Amplifier based on VHDL-AMS
Author :
Qin, Huabiao ; Wang, Fei
Author_Institution :
South China Univ. of Technol., Guangzhou
Abstract :
VHDL-AMS provides a uniform modeling and simulation method for analog and mixed signal system. As the most general unit in analog circuit, the VHDL-AMS model of operational amplifier (OPAMP) can be divided into three parts: input level, middle level, and output level. This paper presents a complete and accurate OP AMP model after detailed analysis on its characteristics. The simulation results show the open-loop and closed loop frequency responses, output saturation, and the slew rate of operational amplifier are truly reflected by this model.
Keywords :
circuit simulation; frequency response; hardware description languages; integrated circuit modelling; mixed analogue-digital integrated circuits; operational amplifiers; VHDL-AMS; analog and mixed signal system; analog circuit; closed loop frequency response; open-loop frequency response; operational amplifier characteristics; operational amplifier modeling; saturation level; simulation method; slew rate; Analog circuits; Analog integrated circuits; Circuit simulation; Computational modeling; Frequency locked loops; Integrated circuit modeling; Operational amplifiers; Parasitic capacitance; Resistors; Voltage; VHDL-AMS; behavior level; modeling; operational amplifier;
Conference_Titel :
Electronics, Circuits and Systems, 2006. ICECS '06. 13th IEEE International Conference on
Conference_Location :
Nice
Print_ISBN :
1-4244-0395-2
Electronic_ISBN :
1-4244-0395-2
DOI :
10.1109/ICECS.2006.379933
