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TITLE OF PROJECT

THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE

DEGREE OF BACHELOR OF TECHNOLOGYIN

ELECTRONICS & COMMUNICATION EGINEERING

BY

NAME OF STUDENT(s)

ROLL NUMBER:

REGISTRATION NUMBER:

UNDER THE GUIDANCE OF

NAME OF GUIDEASST. PROFESSOR

Department of Electronics & Communication Engineering

INSTITUTE OF SCIENCE & TECHNOLOGY

DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING

INSTITUTE OF SCIENCE & TECHNOLOGY

MAY-2012


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Department of Electronics& Communication Engineering

Institute of Science & Technology

Certificate of Submission

I hereby recommend that the thesis, entitled title of

project, prepared by name of student/students

under my supervision, be accepted in partial fulfillment of

the requirement for the degree of Bachelor of

Technology from the Department of Electronics &

Communication Engineering under Institute of

Science & Technology.

----------------------------------------------

(Name of Guide)

Asst. Professor,

Dept. of Electronics & Communication Engineering,

Institute of Science & Technology.

Countersigned by:

----------------------------- ------------------------------

Head of the Department Project Coordinator

Electronics & Communication Engineering, Electronics & Communication Engineering,

Institute of Science & Technology. Institute of Science & Technology

----------------------------------------

Head of the Institute

Institute of Science & Technology


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ACKNOWLEDGEMENT

With great pleasure I would like to express deep gratitude to(Name of guide), Assistant Professor, Department of

Electronics & Communication Engineering, Institute of Science

& Technology for the help, cooperation and guidance received

from him throughout the tenure of this project. His valuable

and constructive suggestions at many difficult situations are

immensely acknowledged. I am deeply indebted to (Name ofguide) for providing a mentally simulating environment and for

many hours of enjoyable discussions.

My sincere obligation goes to (name of HOD) Head Of The

Department, Department of Electronics & Communication

Engineering, Institute of Science & Technology for his constant

support.My sincere obligation goes to (any other person),

(designation), (dept. & institute)for his constant support.

My whole hearted thanks to the staffs of the department of

Electronics & Communication Engineering, Institute of Science

& Technology for their help.

Regards


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(Name of students &

signature)

(this page is optional)

Dedicated tomy parents


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ABSTRACT

(within one page , brief description of project)


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CONTENTS(change the chapter name & topic according your project)

CHAPTER 1: INTRODUCTION

1.1 MOTIVATION OF THE THESIS 1

1.2 FOCUS OF THE THESIS 2

1.3 ORGANISATION OF THE THESIS 3

CHAPTER 2: BASICS OF A/D CONVERSION

2.2 OBJECTIVES OF A/D CONVERSION

2.4 TYPES OF A/D CONVERTER 6

2.4.1 FLASH TYPE A/D CONVERTER 7

2.4.2 SUCCESSIVE APPROXIMATION A/D CONVERTER 8

2.4.3 INTEGRATING A/D CONVERTER

2.4.4 OVERSAMPLED A/D CONVERTER

10

2.5 APPLICATIONS OF A/D CONVERTER 13

CHAPTER 3: FUNDAMENTALS OF OVERSAMPLED

CONVERTER

19

3.1 PRINCIPLES OF OVERSAMPLED DATA CONVERTER 20

3.2 OVERSAMPLED MODULATOR

3.2.1 DELTA MODULATION 22

3.2.2 EXPONENTIAL DELTA MODULATION

25

3.2.3 SIGMA DELTA MODULATION 25

3.3 ADVANTAGES OF -MODULATOR 28


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3.4 DISADVANTAGES OF - MODULATOR

3.5 APPLICATION OF - MODULATION 30

32

32

CHAPTER 4: - A/D CONVERTER DESIGN 34

5.1 CHOICE OF MODULATOR ARCHITECTURE 36

5.1.1

5.1.25.1.3

5.2 DIGITAL FILTERING 37

CHAPTER 5: PRACTICAL IMPLEMENTATION OF -

MODULATOR

40

6.1 REQUIRED INPUT AND ASSOCIATED ASSUMPTION 40

6.2 PROCEDURE

6.3 CHALLENGES FACED DURING IMPLEMENTATION 41

6.4 EXPERIMENT RESULT 44

CHAPTER 6: DESIGN OF DIGITAL DECIMATION FILTER

6.1 Importance of Filtering 48

6.2 Choice of Filter topology

6.2.1 Comb filter as a decimator

6.2.2 MATLAB simulation of Digital Filter

6.2.3 FPGA implementation of Digital Filter

6.3 Logic analyser output

6.4 Results and discussion

CHAPTER 7: MICROCONTROLLER BASED HIGH RESOLUTION

- ADC FOR DC SIGNAL CONVERSION

CHAPTER 8: CONCLUSION, RESEARCH/FURTHER WORK 49


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7.1 CONCLUSION 50

7.2 RESEARCH/FURTHER WORK

APPENDIX A Datasheet of various component used in this project 51

REFERENCES 57

60

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