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Design of an Input Multiplexer for Video Applications
Linköping University, Department of Electrical Engineering, Electronics System.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Konstruktion av en Ingångsmultiplexer för Videotillämpningar (Swedish)
Abstract [en]

In modern home entertainment video systems the digital interconnection between the different components is becoming increasingly common. However, analog signal sources are still in widespread use and must be supported by new devices. In order to keep costs down, the digital and the analog receiver chains are implemented on a single die to form a system-on-chip (SoC). For such integrated circuits, it is beneficial to reduce the number of power supply domains to a minimum and preferably use the core voltage to power the analog circuits.

An eight-to-one input multiplexer, targeted for video digitizer applications, is presented. Together with the multiplexer, a simple current-mode DC restoration circuit is provided. The goal has been to design the circuits for a standard, single-well, 65 nm CMOS process, entirely using low-voltage core transistors and a single 1.1 V supply domain, while allowing the input signal voltages to extend beyond the supply rails.

To fulfill the requirements, a bootstrap technique has been proposed for the implementation of the multiplexer switches. Bootstrapping a CMOS switch allows high linearity, as well as wide bandwidth and dynamic range, to be achieved with a very low supply voltage. The simulated performance is: 3 dB bandwidth of 536 MHz with a 1.5 pF load at the output of the multiplexer and a SFDR of 65 dBc at 20 MHz and 1 Vp-p input signal. It has been verified that no transistor is stressed by high voltages, therefore, the circuit reliability is guaranteed. The DC restoration circuit utilizes the main video ADC, for measuring the DC level, and is capable of setting it with an accuracy of 60 μV within the range of 100 mV to 500 mV.

Place, publisher, year, edition, pages
2011. , 68 p.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-65530ISRN: LiTH-ISY-EX--10/4411--SEOAI: oai:DiVA.org:liu-65530DiVA: diva2:396428
Presentation
2010-06-11, Linköping, 10:00 (English)
Uppsok
Technology
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Available from: 2011-02-11 Created: 2011-02-10 Last updated: 2011-02-11Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf