Date of Award

5-2008

Degree Type

Dissertation

Degree Name

Doctor of Philosophy

Major

Electrical Engineering

Major Professor

Benjamin J. Blalock

Committee Members

Charles L. Britton, M. Nance Ericson, Vasilios Alexiades, Ethan Farquhar, Syed K. Islam

Abstract

Systems-on-chip with the capability of driving multiple analog voltages are useful for a variety of applications, including multiple actuator control for robotics applications, automated test equipment systems, industrial automation, programmable logic controllers, and satellite ywheel motor control. Such applications require a DAC for each analog output. A multi-channel architecture that saves power and area by sharing hardware is needed.

This work introduces a new single-ramp multi-channel 12-bit DAC architecture. The architecture includes a low power Gray code counter, ramp generator, digital comparator, analog memory units, and control logic.

The new multi-channel DAC architecture allows hardware sharing between multiple channels, and enables Systems-on-Chip to have multiple analog outputs for stimulating transducers or motors. The DAC architecture is to be used in a variety of space and defense applications as part of the BAE Systems RAD6000 microcontroller project.

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Engineering Commons

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