Sockalingam and Thibodeau

10-Bit 5MHz Pipeline A/D Converter

Designed by
Kannan Sockalingam & Rick Thibodeau

Dept.of Elec. and Comp. Engineering
University of Maine, Orono.

Computer chip

This ECE547 VLSI Design project consists of a 10-bit, 5MHz, pipeline architecture, analog to digital converter. The converter is implemented with a 9 stage pipeline architecture. The design is based on switch-capacitor circuitry. Each stage consists of an OTA, differential comparators(sub-ADC) and a sub-DAC. The converter accepts 0-1V (2.5V offset) fully differential signal up to 2.5MHz. The 1.5 bits/stage output is digitally corrected to obtain a 10 bit ADC output. MOSIS implements the device in AMI’s C5N process technology. The 0.5 micron minimum gate length is physically designed on a 0.15 micron grid. This constrains the gate length to a minimum of 0.6 microns. The die size is 1.5 X 1.5 microns and will be packaged in a 40 pin DIP.

The project report (PDF) contains a description of the project, details of the design, and test results. Details of the layout are shown in Appendix b (PDF). A poster (PDF) describing our project is also available.

August 2002