BME 3710 - Biomedical Instrumentation I

2 lecture hours 2 lab hours 3 credits

Course Description
This course focuses on the fundamental devices, circuitry, and techniques needed to acquire and preprocess biomedical signals. Operating principles of basic semiconductor devices as well as their application are explained. The electrical characteristics of diodes, photodiodes, Zener diodes, LED, regulators, and BJT transistors are covered. Switched mode power supplies are introduced as an application. Filtering principles and filer types are demonstrated in detail. Additionally, operational amplifiers are studied and used in multiple amplifier and filter circuits to preprocess signals. Non-ideal op amp properties are treated in sufficient depth to permit design of high gain circuits capable of handling small DC and low frequency biomedical signals.
Prereq: ELE 2011 (quarter system prereq: EE 2070)
Note: This course is not available to students with credit for ELE 3101.
This course meets the following Raider Core CLO Requirement: Integrate Learning

Course Learning Outcomes
Upon successful completion of this course, the student will be able to:

Utilize semiconductor theory to explain the behavior of diodes and transistors
Utilize diodes as sensor, rectifiers, and regulators
Design different types of power supplies
Implement basic amplifier circuits and utilize simulation tools to verify circuit outputs
Determine suitability of an amplifier to a certain application through datasheets
Design basic passive and active filters to preprocess signals
Predict the overall performance of cascaded processing modules
Design circuitry to generate periodic voltage or current waveforms
Assess the stability of feedback systems with respect to oscillation
Assess the effect of non-ideal operational amplifier properties on circuit performance
Identify the design blocks of a biomedical instrument/measuring device
Analyze the functionality and performance of a used amplifier circuit through simulation
Design electronic circuitry using operational amplifiers to amplify the signals produced by resistive pressure transducers

Prerequisites by Topic

Analysis of single op-amp non-standard configurations
Dependent source modeling
Laplace transform circuit analysis concepts
Transfer functions in the complex frequency(s) domain
First and second-order circuit analysis in the S domain with initial condition models

Course Topics

Semiconductor fundamentals
Diode fundamentals and applications
Conventional power supplies
Principles of switching using BJT transistors
Switched mode power supplies
Amplification concepts using simple 3-element models: cascading and loading effects
Amplifier implementation using operational amplifiers: inverting, non-inverting, summing amplifiers
Difference amplifiers and fundamentals of instrumentation amplifiers
Filtering principles, low pass, high pass, band stop, and band pass.
Passive analog filters
Active analog filters.
First and second order filters implemented with op amps, low pass, high pass, and band pass
Static non-ideal op amp characteristics: offset voltages and bias currents, finite gain and input and output resistances
Dynamic non-ideal op amp characteristics: finite bandwidth, frequency response, and slew rate
Stability of feedback amplifiers
Positive feedback, hysteresis, and relaxation oscillators
Timing circuits
Instrumentation for physiologic pressure measurements: Hands-on end of term project

Laboratory Topics

Characteristics of the rectifier diodes and LED
Design and implement circuits containing diodes and Zener diodes.
Design and implement a power supply
Design, simulate, and implement basic amplifiers using op amps
Investigation of non-ideal operational amplifier characteristics
Analog integration of signals.
Design, simulate, and implement analog filters
Linear, sinusoidal oscillator or relaxation oscillator implementation
Design, simulate, and implement a simple Hysteresis Function Generator
Simulate and implement a basic instrumentation Amplifier circuit
Physiologic pressure measurements: Hands-on end of term project

Coordinator
Dr. Ahmed Sayed

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