Currently, the mixed signal circuits like A/D and D/A converters are being designed either by Matlab, C and C++ or VHDL-AMS. But, these languages do not give detailed information at the architecture level. Though VHDL-AMS (VHSIC Hardware Description Language-Analog and Mixed Signal extension) is used for hardware description for mixed signal circuits, it is used for simulation only but not used for synthesis. There are no synthesis tools for VHDL-AMS. Since, synthesis is not possible using VHDL-AMS, further optimization of the mixed-signal designs is also not possible.