Home    Bloggers    Blogs    Article Archives    Messages    About Us   
Tw  |  Fb  |  In  |  Rss

ADC Guide, Part 1: the ideal analog/digital converter

50%
50%
SunitaT0
SunitaT0
3/19/2013 1:29:33 PM
User Rank
Master
1LSB vs resolution
Sachin and Akshay, thanks for the detail description on the ADC.
1LSB is equal to VFs / 2^N, it stands to reason that better accuracy (lower error) can be realized if we use a higher resolution and/or use a smaller input voltage. The problem with higher resolution (more bits) is the cost. Also, the smaller LSB means it is difficult to find a really small signal as it becomes lost in the noise, reducing SNR performance of the converter. The problem with reducing the input voltage is a loss of input dynamic range. Again, we also can lose a small signal in the noise, causing a loss of SNR performance.

One suggestion, it will be great help if you can add all the links of the previous posts on ADC guides in your upcoming posts (like "Related posts").

50%
50%
amrutah
amrutah
3/19/2013 2:27:13 PM
User Rank
Master
Re: 1LSB vs resolution
@sunitaT: To add to your point, "the smaller LSB means it is difficult to find a really small signal as it becomes lost in the noise...". 

Higher resolution will lead to many constraints on the quantiser, the offset of the quantiser will become comparable.  The memory requirements will increase.  Do you see any further complexities???

50%
50%
Brad Albing
Brad Albing
3/19/2013 4:57:21 PM
User Rank
Blogger
Re: 1LSB vs resolution
I'll try to get those links added. But in the meantime, use the search function (upper right) and search on either of the authors' names or "ADC Guide" - that should point you to the other posts.

50%
50%
amrutah
amrutah
3/19/2013 2:26:23 PM
User Rank
Master
links to all parts...
I agree with SunitaT, if the links to all the parts of the ADC series 1-13 and further are available at one place then it will be helpful.

50%
50%
Brad Albing
Brad Albing
3/19/2013 4:58:23 PM
User Rank
Blogger
Re: links to all parts...
I'm working on it!

50%
50%
latest blogs
The subject of transconductance op amps versus voltage feedback op amps has always intrigued me. Therefore, I thought it would be a good issue for the Planet Analog audience to debate.
As I mentioned in my last blog I would like to take some time in this blog to introduce you to the new online simulator tool offered by Analog Devices called Virtual Eval.
Circuits can often be compartmentalized into stages with only one or two reactances in each stage. These circuits can be formidable to analyze for engineers unaccustomed to using much math, yet Basso’s book presents higher-level circuit theorems or methods that reduce their apparent complexity.
As the country’s corporate average fuel economy (CAFE) standards rise, what are car manufacturers to do?
There is probably nowhere in the world more closely associated with the electronic components industry than California and, most notably, Silicon Valley. However, one concept that underpins the whole industry - that of electrical resistance - was discovered in Munich, Bavaria, which became part of the German Empire in 1871.
flash poll
educational resources
 
follow Planet Analog on Twitter
Planet Analog Twitter Feed
like us on facebook
our partners
Planet Analog
About Us     Contact Us     Help     Register     Twitter     Facebook     RSS