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Conclusions on the results of our implementation.

Performance on characteristics

Overall, we thought that our implementation of this D/A converter was a great success. As far as the characteristics of a D/A converter, we succeeded with several of them which in turn causes the others to be impaired. The power consumption of our system was low because we filtered out the power hungry high frequencies and implemented it completely passively. This, in turn, impacts the size of our design. It was small due the small number of components. The cost of our system was very low, just a handful of simple components and low power consumption. Finally, for speed, a 44.1kHz reproduction rate is all that one desires when reproducing audio signals like we were. Our implementation had the shortcomings of accuracy and resolution. The system was inaccurate because of the Linux kernel multitasker delaying the signal at random intervals. Our choice of a low bit count in conjunction with an R/2R ladder forces the resolution to be low and introduces quantization error.

Future improvements

There are future improvements that can be made to make this system even better. In order to tackle the Linux kernel multitasker issue, we cannot just set the priority of our designated process. Other background processes are forced to run, but we have the option to install a real-time kernel. This is a fairly substantial task and exists outside the scope of ELEC 301. However, the realtime kernel would be more accurate because it would be able to run our process exclusively and in realtime. We also could perform up-sampling on the fly which is interpolation that approximates what sampling at a higher rate would do. We discussed using upsampling in conjunction with splines in ELEC 301, but the implementation would be rather difficult. Finally, in order improve our resolution, we could increase the number of bits that our BeagleBone Black outputs. However, the more bits that we use, the lower the frequency that we can transmit them at is because the BeagleBone Black has limited processing speed. Also, if we upgrade to a 16-bit system for instance, we would need to choose a design other than the R/2R implementation because as discussed earlier, the capacitance and tolerance of the system begin to matter.

Questions & Answers

what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, R/2r implementation of a d/a converter. OpenStax CNX. Dec 17, 2014 Download for free at http://legacy.cnx.org/content/col11732/1.1
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