Sampling Theory
ADC Types
EE174 SJSU
Lecture #4
Tan Nguyen
Shannon Sampling Theorem
A continuous-time signal x(t) with frequencies no higher than
fmax can be reconstructed from its samples x[n] = x(nT
Sampling and Reconstruction of
Signal
x(t)
x~(t)
Why 44.1 kHz for Audio CDs?
Sound is audible in 20 Hz to 20 kHz range:
fmax = 20 kHz and the Nyquist rate 2 fmax = 40 kHz
What is the extra 10% of the
Data Converter Performance Metric
EE174 SJSU
Tan Nguyen
Analog-to-Digital Converter (ADC)
The theoretical ideal transfer function for an ADC is a straight line; however, the practical ideal transfer
San Jos State University
College of Engineering/Electrical Engineering
EE174: Analog Peripheral for Embedded Systems
FALL 2016
LAB1 Op-Amp
Goals
Understand basic principle and knowledge of Op-Amp
Able
Introduction to Data Conversion
EE174 SJSU
Tan Nguyen
Vocabulary
ADC (Analog-to-Digital Converter): converts an analog signal (voltage/current) to a digital value
DAC (Digital-to-Analog Converter):
Introduction to DC-DC
Conversion
EE174 SJSU
Tan Nguyen
OBJECTIVES
Introduction of DC-DC Converter
Types of DC-DC Converters
Linear regulator (LR)
Switching mode power supply (SMPS)
Advantages and
EE 174
Fall 2016
Operational Amplifiers
Contents
Introduction
Brief of History
Fundamentals of Op-Amps
Basic operation
Gain
Offset
Applications
Introduction
Operational Amplifier (Op-Amp) name
Homework #7 Solution Set
(10 points - 1 per problem)
1. What is a frequency synthesizer? When is crystal control of an oscillator's frequency
inadequate?
A frequency synthesizer is a circuit that synt
Homework #2 Solution Set
(23 points - 1 per problem)
1. What is the frequency domain?
The frequency domain is a way of representing signals. In this representation, the
individual frequencies that mak
Homework #1 Solution Set
14 Points (1 per problem; all work must be shown).
1. Draw a block diagram of a practical radio transmitter. Explain the function of each
block.
Transmit
Antenna
RF
Modulator
Homework #8 Solution Set
(28 points - 1 per problem)
1. What are two primary advantages of FM over AM?
The two advantages are noise immunity (FM receivers are relatively unbothered by
amplitude distur
Homework #5 Solution Set
(17
(17 points - 1 per problem)
13. A certain quartz crystal has the following parameters: Ls=1.38H, Cs=.019 pF,
Rs=68 , and Cm = 4.9 pF. Calculate the following:
a) The serie
Homework #3 Solution Set
(26 points - 1 per problem)
1. Draw a block diagram illustrating how an AM signal is generated.
Modulator
Amplifier
RF Carrier
Oscillator
Amplitude
Modulated
Output
Intelligen
Homework #9 Solution Set
(17 points - 1 per problem)
1. Draw a block diagram of a superheterodyne FM receiver, showing which sections
are new or different from an AM receiver.
Mixer
Preselector
IF
Amp
Homework #10 Solution Set
(25 points - 1 per problem)
1. List the ways that a transmission line can lose signal. Which of these ways could
cause interference with other systems?
A transmission line ca
Energy Harvesting Transducers
EE174 SJSU
Tan Nguyen
Solar cell
A solar cell is an electrical device that converts the energy
of light directly into electricity by the photovoltaic effect.
The solar ce
San Jos State University
College of Engineering/Electrical Engineering
EE174: Analog Peripheral for Embedded Systems
Section 01, Fall15
LAB1 Op-Amp
Goals
1. Understand basic principle and knowledge of
San Jos State University
College of Engineering/Electrical Engineering
EE174: Analog Peripheral for Embedded Systems
Section 01, Fall 2015
LAB3 DC-DC Converter
Goals
The goal of the experiment is to c
Phase Lock Loop Applications
EE174 SJSU
Tan Nguyen
PLL Applications
FM Demodulation
Phase-Locked Loop Based Clock Generator
PLL perform:
Clock input division
Frequency Multiplication
In this manner,
Introduction to Data
Conversion
EE174 SJSU
Lecture #2
Tan Nguyen
Vocabulary
ADC (Analog-to-Digital Converter): converts an analog signal
(voltage/current) to a digital value
DAC (Digital-to-Analog C
Introduction to DC-DC
Conversion Cont.
EE174 SJSU
Tan Nguyen
SWITCHING MODE POWER SUPPLY (SMPS)
The switching-mode power supply is a power supply that
provides the power supply function through low l
Op-Amp
EE174 SJSU
Lecture #1
Tan Nguyen
Operational Amplifier
Introduction
Brief of History
Fundamentals of Op-Amps
Applications
Introduction
Operational Amplifier (Op-Amp) is an active
circuit eleme
San Jos State University
College of Engineering/Electrical Engineering
EE174: Analog Peripheral for Embedded Systems
Section 01, Fall 2015
LAB4 Energy Harvesting (EH)
Goals:
The goal of the experiment
Near Field Communication
EE174 SJSU
Tan Nguyen
OBJECTIVES
RFID
NFC
NFC Operations
NFC Applications
NFC Advantages/Disadvantages
Summary
What is RFID?
Radio-Frequency Identification (RFID) is th
San Jos State University
College of Engineering/Electrical Engineering
EE174: Analog Peripheral for Embedded Systems
Section 01, Fall 2015
LAB2 ADC
Goals:
To design and build a simple Analog-to-Digita
Bode Plot
EE174 SJSU
Tan Nguyen
Bode Plots
Bode plots are semilog plots of the magnitude (in decibels) and phase
(in degrees) of a transfer function versus frequency.
The transfer function can be writ
Overview of Energy Harvesting
EE174 SJSU
Tan Nguyen
OUTLINE
Introduction to Energy Harvesting (EH)
How does EH work?
Sources of Energy
Energy conversions
EH Components
EH system and EH Circuit
Energy
Data Converter Performance
Metric
EE174 SJSU
Lecture #3
Tan Nguyen
Data Conversion
Analog-to-DigitalConverter (ADC)
The theoretical ideal transfer function for an ADC is a straight line; however,
the
Homework #4 Solution Set
(12 points - 1 per problem)
1. Draw a block diagram of both low and high-level AM transmitters.
A
B
D
Transmit
Antenna
E
RF
RF Carrier
Oscillator
Buffer
Amplifier
Modulator
Po