Magnetic Sensor for Hearing Aid Application
A project for ECE 547 “VLSI Design”
Fall Semester 2003
Dept. of Electrical and Computer Engineering
University of Maine
The project report (PDF) contains a description of the project, details of the design and layout, and simulation and test results.
This project consists of a integrated circuit that tests two amplifiers hooked up to an integrated telecoil, as well as several test amplifier circuits. The amplifiers are based on a single stage Cherry-Hooper configuration. The single stage Cherry Hooper design is simulated at a gain of 29 dB, THD of -50dB, and equivalent input noise of 2.01nV/sqrt(Hz). The three stage Cherry Hooper design with filter is simulated at a gain of 84 dB, THD of -49dB, and equivalent input noise of 2.01nV/sqrt(Hz). The three stage amplifier also has a bandwidth of 3kHz and a driving capacity of 30pF external load capacitance.
December 1, 2003