Time-Interleaved ADCs

158 Pages·2011·5.74 MB·English

Time-Interleaved ADCs
Theory and Design
Manar El-Chammas
TexasInstruments
December 11, 2011
Who am I?
Received B.E. from A.U.B. in 2004
Received Ph.D. from Stanford University in 2010
(cid:73) Thesis: “Background calibration of timing-skew in time-interleaved
ADCs”
(cid:73) Ph.D. Advisor: Boris Murmann
(cid:73) Research interests: Integrated circuits, background calibration, low
power design
Currently working at Texas Instruments (Dallas, TX) on high-speed
data converters
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Tutorial objectives
To understand the theory and operation of time-interleaved ADCs
and how to design them
At the end of this tutorial, you will have a toolbox to analyze
time-interleaved ADCs with and a starting point from which to
design one
(cid:7) (cid:4)
Stop me whenever you have questions
(cid:6) (cid:5)
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A broad-stroke outline
Overview of data converters
The time-interleaved ADC
Quantitative analysis of time-varying errors
Design of time-interleaved ADCs
Calibration
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Part I
Overview of Data Converters
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Introduction
Data converters important part of signal chain
[SlidetakenfromB.Murmannnotes]
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Data converter applications
Consumer electronics
(cid:73) Video and audio
(cid:73) Digital cameras
(cid:73) Automotive systems
Communication systems
(cid:73) Wireless infrastructure
(cid:73) Ethernet
Computing and control
(cid:73) Storage media
(cid:73) Feedback systems
Instrumentation
(cid:73) Medical equipment
(cid:73) Oscilloscopes
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Examples
Agilent oscilloscope
Published in ISSCC 2003
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Examples
1 kS/s ADC for medical implants
Published in ESSCIRC 2010
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Examples
TI ADC used in wireless infrastructure
Published in ISSCC 2010
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