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Data Converters Lecture 0: Introduction
ELC 609 – Fall 2011 Dr. Mohamed M. Aboudina
[email protected] Department of Electronics and Communications Engineering
Faculty of Engineering – Cairo University
This Course
© Mohamed M. Aboudina, 2011
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Information
• ELC 609 – Elective course.
• Lecture: Monday 5:15pm – 8pm
• www.eece.cu.edu.eg/moodle
– Access code : elc609@2011
• Office hours:
– Monday: 3:30-5pm
– Or by appointment ([email protected] (preferred) or [email protected])
This Course
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Course Objective
• Acquire a thorough understanding of the basic principles and challenges in data converter design – Focus on concepts, architectures and design challenges;
– Preparation for further study of state-of-the-art "fine-tuned“ realizations
• Strategy – Acquire breadth via a complete system walkthrough and a
survey of existing architectures and techniques
– Acquire depth through a midterm project that entails design and thorough characterization of a specific circuit example in modern technology
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Assignments
• Midterm Project: (40%)
– Design of one of the studied architectures.
– Transistor-level simulation will be performed.
– Project will be handed out 1st week of Dec’11.
– Project Report due 2 weeks before Finals start.
• Final Exam: (60%)
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Instructor
• Education:
– B.Sc. 2000, Cairo University.
– M.Sc. 2002, Cairo University.
– PhD 2008, University of California, Los Angeles (UCLA).
• Experience:
– Marvell Semiconductor Inc. (Jan’09 – June’11).
– Newport Media Inc. (Dec’05-Mar’07).
– Mentor Graphics Egypt. (Dec’00-Sept’02).
– Teaching Assistant (UCLA and Cairo Univ.) .
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Instructor
• Research Interest:
– Data Converters (Nyquist-rate and Oversampling).
– Power Management (DC-DC, LDOs).
– Baseband Analog (Filters, VGAs, Transconductance Amplifiers, Transimpedance Amplifiers, Buffers, FDNR, … etc) up to GHz ranges.
– Transceivers for Communication Systems.
– Biomedical Applications.
– Any possible new topic.
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Why Analog?
• Naturally-occurring signals, e.g., RF received signal, voice and video, are analog.
• System and medium non-idealities often make it necessary to
treat digital signals as analog (Disk Drive Retrieved Data).
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Why Data Converters?
• Data conversion is difficult;
• Data converters have a huge market;
• The demand for higher performance in data converters keeps growing;
• Cost issues make it desirable to build data converters in mainstream VLSI technologies rather than dedicated “analog” processes. This creates more difficulties in the design.
Data Converters
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Data Converter Applications
Data Converters
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Data Converter Applications
Data Converter Examples
© Mohamed M. Aboudina, 2011
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High Speed, Low Resolution
• A 6-bit 3.5-GS/s 0.9-V 98-mW Flash ADC in 90-nm CMOS
Degutchi, JSSC’08
Data Converter Examples
© Mohamed M. Aboudina, 2011
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Medium Speed, Medium Resolution
• A 1.2V 4.5mW 10b 100MS/s Pipeline ADC in a 65nm CMOS.
Boulemnakher, ISSCC’08
Data Converter Examples
© Mohamed M. Aboudina, 2011
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Low Speed, High Resolution
Agah, VLSI’07
• A High-Resolution Low-Power Oversampling ADC with Extended-Range for Bio-Sensor Arrays
• 15-bit, 1MS/s (fS = 42MHz) and 38 mW.
This Course
© Islam A. Eshrah, 2010
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Course Contents
• Introduction to Data Converters.
• Sampling Circuits.
• Nyquist-Rate DACs.
• Flash ADCs
• Folding and Interpolating ADCs
• Two-step and Pipelined ADCs (2 lectures)
• Oversampling ADCs (2 lectures)
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
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Course Contents
• Bit-at-a-time ADCs and Time Interleaved
• Layout Considerations
• Data Converter Testing (optional)
Chapter 8
Chapter 9
Chapter 10
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References
• R. v. d. Plassche, CMOS Integrated Analog-to-Digital and Digital-to-Analog Converters, 2nd ed., Kluwer, 2003
• B. Razavi, Data Conversion System Design, IEEE Press, 1995
• F. Maloberti, Data Converters, Springer, 2007
• R. Schreier and G. Temes, Understanding Delta-Sigma Data Converters, IEEE Press, 2005
• IEEE Journal of Solid-State Circuits and Systems
• IEEE Transactions on Circuits and Systems.