[volt-nuts] LTZ1000 project build

Randy Evans randyevans2688 at gmail.com
Thu May 26 12:45:55 EDT 2016


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?


Randy Evans

On Thu, May 26, 2016 at 3:42 AM, Illya Tsemenko <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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