I have been asking myself how a gang-burn-in of several ADR1000 might be set up. I have some Vishay RSSD resistors in the lab, which usually serve as loads during EMI tests of power supplies. Those resistors feature a cylindrical ceramic body, which can accommodate several TO-99.
Today's test was about general feasibility. I usually wouldn't touch a breadboard with a ten feet pole, but in these trying times of component shortages, I decided to go retro. It turned out that the only THT OPAMP, which I had at hand, was a veteran that has been with me for a very long time. No component on that breadboard is younger than thirty years.
Since I didn't want to risk an ADR1000 for tests, I decided to use an 1N4148 as target and a KTY81-122 as sensor for a temperature regulator.
I was a bit concerned about flammability, so I took care with the setup:
The two devices go into the RSSD 25x168 100R.
Eager to start the experiment I didn't even bother cleaning out the cookie jar.
The RSSD is suspended by some highly flame resistant steel mounts from the mill router. Some electrical insulation goes under the mounts, not shown in the picture.
The cookie jar is wrapped in cotton cloth. The cotton cloth rests on a thick towel and is covered by another towel.
The whole heap is placed on a metal step ladder next to my desk.
It turns out that in steady state the setup burns 13W in the RSSD. It is autumn here and I need central heating to keep the lab warm, so I am not bothered by the power dissipation.
Now that everybody had a good laugh - could anybody tell how critical that 150°C burn-in temperature is, please?
In which temperature band should the die be kept?
What is the lowest temperature that makes sense?
At which temperature can we expect damage to the ADR1000?
After all, according to the datasheet, 150°C is the junction temperature limit for storage and operation.