McCarthy

UMaine Alert

Posted: April 19, 2024 - 1:32 PM

At approximately 9:24 a.m. on Friday, April 19, a University of Maine graduate student was struck by a university vehicle on Long Road at the University of Maine campus in Orono. The student reports that they are at a local hospital with minor injuries.

Emergency services, including the Orono Fire Department, University Volunteer Ambulance Corps, University of Maine Police Department, Orono Police Department and Penobscot County Sheriff’s Office responded to the scene.

The university vehicle involved in the incident was a Chevrolet Express van. It was being operated by a university employee.

Counseling services and support are available for students, faculty or staff who may have been affected. The Counseling Center can be reached at 207-581-1392 and the Dean of Students Office can be reached at 207-581-1406.

The scene has been cleared and Long Road is now accessible. An investigation is being conducted by the University of Maine Police Department with assistance from the Penobscot County Sheriff’s Office Crash Reconstruction Unit. Any witnesses to the incident are encouraged to contact Lt. Noel Santiago at noel.santiago@maine.edu.

High Speed Fast-Settling OTA

Designed by
Erik McCarthy

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

Computer chip

This ECE547 VLSI Design project consists of an Operational Transconductance Amplifier (OTA) to be used in the gainstage of a pipelined A/D Converter. The OTA is designed to charge 500fF switched capacitors with a settling time less than 5ns. The design is based on a telescopic architecture for optimal speed. There are nine fully differential OTA’s and a 250MHz ring oscillator on the layout.

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 mm and is packaged in a 40 pin DIP.

The project report (PDF) contains a project description with design and layout considerations and test results.

May 2003