[volt-nuts] LTZ1000 project build

Illya Tsemenko illya at xdevs.com
Thu May 26 18:58:58 EDT 2016

Fixed the graphs. There was function in JS to plot only last 60 days of 
data, I forgot about it.
Some graphs take bit of time to load, especially on mobile devices. I'm 
not great on software programming, sorry.

27/05/16 0:45, Randy Evans пишет:
> Illya,
> Very interesting.  The temco/stability data  does not plot but the X-Y 
> format seems to be OK.  Is it supposed to plot or do I have to plot it 
> myself with the csv data?
> Thanks,
> Randy Evans
> On Thu, May 26, 2016 at 3:42 AM, Illya Tsemenko <illya at xdevs.com 
> <mailto:illya at xdevs.com>> wrote:
>     I'm glad my little project got so much attention. Worth to mention
>     few points regarding my (or any other LTZ1000) unit:
>     A. One should consider cost of whole BOM, not only LTZ chip. In my
>     case resistors from VPG exceed cost of LTZ1000 by far.
>     B. PCB I designed was targeted best to my own application need,
>     where compact size and direct output (whatever is coming out of
>     LTZ) were key importance. Since modules are part of bigger system
>     with DAC synth, specific value, like 7.1500000 was not important
>     for me.
>     C. If there is large enough group to have this project going, I
>     can actually modify original design (e.g. for easier hand
>     soldering, or added buffer or ratio circuits, onboard LDO, you
>     name it) and get PCBs made for interested nuts, at small cost.
>     You can also find lot of temco/stability data with
>     temperature/environment logs with mentioned LTZ modules on my site
>     here: https://xdevs.com/services/ in LTZ1000 voltage reference
>     tests section. RAW DSV data are available. I still have 3 modules
>     at hand for any testing/checks (one was sold while ago, one was
>     installed in HP 3245A source to replace LM399).
>     Illya "TiN" Tsemenko
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