ADR1001 - Ovenized Voltage Reference System

[iMo]

FYI - attached a short presentation from ADI on the upcoming ADR1001..

[Echo88]

What a time to be alive. 
Considering the fact that its using a LCC-package and the time it apparently takes for the ADR1000AHZ to reach stability and feel cozy, i assume it wont replace Fluke 732s and PWMed LM399/ADR1399 any time soon.
Maybe more suitable as a less stable version of the LTZ1000 for stuff like ADCs/DACs such as AD5791 and AD4630-24.
Opinions on it and its purpose?
But it will surely be interesting to see what exact specs it claims.

[iMo]

We should wait on the DS..
Btw, is that a typo in the internal schematics? I would wire it this way..

[miro123]

Finally the gossips around ADR1001 become reality. It seems that AD follows their initial roadmap.
Lets wait one more week and see the datasheet - it is still 21th of September :-)
Personal for me ADR1001 and low cost LM399/5V makes more sense.
They can be connected to the modern world as opposed to dinosaurs versions LTZ1000/LM399/ADR1001/1399
They are also attractive from business perspective - high quantity mass production
@Echo88 - What about redesigning of our fresh HPM7177 circuit?

[sahko123]

I think they have made the ADR1000 more or less obsolete at this point because why would you need it. LTZ1000/A's are still in production for those who want that and ADR1001 has all the stuff you want all in a juicy ceramic ppm safe package

[Kleinstein]

So far the performance in the ceramic package is still to be proven in real life. Even the ADR1399 and ADR1000 are still relatively new and so far the noise data look good, but the few results shown here about longer term drift (still hardly 1 year) are not that great.  So far the ADR1000 is nice for low noise, but if one needs low long term dirft the LTZ1000A is still the safer bet.

For a heated reference the ceramic case is also not ideal as it may need relatively high power compared to the TO46 / TO99.
The ADR1001 is also likely quite expensive.

[iMo]

..For a heated reference the ceramic case is also not ideal as it may need relatively high power compared to the TO46 / TO99.
The ADR1001 is also likely quite expensive.

I think the price would be the decisive factor on the ADR1001 success. Provided it is a single die solution the price could easily be at the "level of the ADR1000". In that case the ADR1001 will be the game changer even with a little bit less performance, imho.

[miro123]

The ADR1001 is also likely quite expensive.

AD roadmap showed LM399/ADR1399 5V version too

[sahko123]

(based on speculation) I think the Adr1001 will cost roughly 25 to 35 euro more than adr1000. May be different with adi price hikes.

Some of my ltz1000 references use around 16mA the Adr1001 will use under 40ma at room temp with default settings. But obviously that varies with setup and board I would e be surprised if you can get that comfortable down to sub 25mA (all at 12v)

[Kleinstein]

For the heater the ADR1001 also has one advantage, that may save some power: the transistor to drive the heater is internal and also contributes to heating. In normal steady state the voltage at LTZ1000 the heater resistor is more like in the 5 V range. So quite some voltage is lost unused. This especially helps at the low end with a relatively low set temperature and limited abient range. To keep the resistor drift low, a high set temperature is anyway not that attractive.

[iMo]

For the heater the ADR1001 also has one advantage, that may save some power: the transistor to drive the heater is internal and also contributes to heating..

The sim of the HEATER vs TRANSISTOR power loss for set 55C and Vcc=12/15/24/30V.

[KT88]

I think they have made the ADR1000 more or less obsolete at this point because why would you need it.

Probably not - the aging of the internal resistors could possibly show a slightly higher LTD compared to the best discrete resistors...
I would expect the ADR1001 to be positioned between the ADR/LTZ1k and the ADR1399/LM399 in both (system-) cost and performance.
Just my 2 cents...

Cheers

Andreas

[sahko123]

the adr1k1 has more or less the same drift as the ADR1000 since they are almost the same. Which is quite severe in first few hundred hours so compared to the ltz1000.

The 5v output has the same drift over the first 1k hours dont know much beyond that though but i think will take longer to plateau than the 6v6 output.

I'd love to show some things but you will be more satisfied later on if I leave you blue-balled for now......

[miro123]

I think there are two duplicated ADR1001 rumors messages in metrology section
https://www.eevblog.com/forum/metrology/adr1001-ahz-spotted-in-analog-devices-wiki-post/

[Conrad Hoffman]

Don't know about the part, but the EVAL board is rather expensive.

[Bobertsawesome]

Those official eval boards are always much more expensive than their actual BOM. They're more oriented toward engineers looking to implement the targeted device by the thousands and have lots of documentation surrounding them.

[opa627bm]

Anyone from ADI is here? can you send me a PM?

[RandallMcRee]

My experience has been that Analog expects “real” engineers to engage directly on their website, www.analog.com, where they have forums, free samples, etc etc.

To be eligible you must work directly in the electronics industry IIRC.

[r6502]

Those official eval boards are always much more expensive than their actual BOM. They're more oriented toward engineers looking to implement the targeted device by the thousands and have lots of documentation surrounding them.

When we order eval boards in the company, especial from ADI, we get them normally for free. This may depend on your contact to the sales engineer as well. We of course tell them expected money generated in series production with the particular project. But even, if you have to pay for the eval boards, it is an design advantage, as you get a functional application with the part you plan to use for your application.

Guido

[Bobertsawesome]

Neat to know, and that makes sense. The chemistry field is the same way as the likes of Sigma Aldrich. Institutions and Unis practically get chemicals for free cause they know they will make their money tenfold back from the recognition.

[jbb]

In a commercial environment I’ve often been happy to order expensive dev boards. In general, it was about time:
- I knew I could bodge together an existing product with the dev board for some new chips and see what happens
- I needed to choose between a shortlist of a few parts, so I bought dev boards for comparison

[opa627bm]

I got one on order too.
Just want to see if anyone from ADI is in this forum.

[sahko123]

You have Adr1001 on order?

[opa627bm]

Yes, the EVM, FAE helped to order it from ADI. Not sure when it will arrive...

[branadic]

I haven't seen a picture of the ADR1001 EVM, but if they use the very same tinned banana jacks soldered to the board and the SMA connector as they do for the ADR1399, I wouldn't be too surprised to hear about the observed shifts, these are not proper connections for a voltage reference in this accuracy range.

-branadic-