[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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