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 and MOSFET transistors are covered. Switched mode power supplies are introduced as an application. Filtering principles and filter 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 amplitude and low frequency biomedical signals.
Prereq: ELE 2011
Note: Only one of BME 3710 and ELE 3101 can be used to meet a degree requirement unless approved by the program director.
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
Analyze I-V characteristics of MOSFETs and BJTs
Design and implement single transistor amplifier circuits (using MOSFETs and BJTs) 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
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
Practice systems thinking through the recognition of the connections and interdependencies between dynamic pneumatic and electronic measurement systems
Design electronic circuitry using operational amplifiers to amplify the biosignals 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
BJTs and MOSFETs theory of operation and I-V characteristics
Using BJTs and MOSFETs as swtiches and amplifiers
Analysis of CE BJT and CS NMOSFET single transistor amplifiers
Amplifier implementation using operational amplifiers: inverting, non-inverting, summing amplifiers
Amplification concepts using simple 3-element models: cascading and loading effects
Difference amplifiers and fundamentals of instrumentation amplifiers
Filtering principles, low pass, high pass, band stop, and band pass.
Passive and 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
Instrumentation for physiologic pressure measurements: Hands-on end of term project

Laboratory Topics

I-V characteristics of the rectifier diodes and LEDs
Design and implement circuits containing diodes and Zener diodes
I-V characteristics of BJTs and NMOSFETs
Design and implementation of BJT and MOSFET switching circuits
Implementation of BJTs as single transistor amplifiers
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
Simulate and implement a basic instrumentation amplifier circuit
Non-invasive blood pressure measurements using instrumentation amplifiers
Design, simulate, and implement a simple Hysteresis Function Generator
Physiologic pressure measurements: Hands-on end of term project

Coordinator
Dr. Ahmed Sayed

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BME 3710 - Biomedical Instrumentation I