verilog ams design for sigma delta adc

[soumya guru]

I am designing a sigma delta adc using cadence (ic 4151),at 90nm technology.but i want to design it using ams verilog,so i want to know what are the library files that are required to carry out the designing procedure..The cadence licence which i am using doesnt contain the amsLib file ,so can i design my project using gpdk...???do i need a driver ckt for all types of design.... waiting for a quick and positive response from your side,it will bw a great help for me