Search found 5 matches

by ROFLCat
Thu Sep 10, 2020 6:00 am
Forum: General Discussion
Topic: ADR421 Vref IC Low Short-Circuit Current!
Replies: 10
Views: 430

Re: ADR421 Vref IC Low Short-Circuit Current!

So I submitted a support ticket on my distributor's app/website 3 days ago and still waiting for a response. They reply really fast usually, in a matter of a day. Meanwhile, I've been mocking around with it using low pass filters, different caps in different places, shielding, and even going on the ...
by ROFLCat
Tue Sep 08, 2020 1:08 am
Forum: General Discussion
Topic: ADR421 Vref IC Low Short-Circuit Current!
Replies: 10
Views: 430

Re: ADR421 Vref IC Low Short-Circuit Current!

I got it from a local supplier. It wasn't on a discount or anything. Where I live, Mouser or Digikey and stuff don't ship here.
by ROFLCat
Mon Sep 07, 2020 4:42 pm
Forum: General Discussion
Topic: ADR421 Vref IC Low Short-Circuit Current!
Replies: 10
Views: 430

Re: ADR421 Vref IC Low Short-Circuit Current!

As I remember, the "BRZ" is only related to the precision of it (0.04%) and not the power consumption? It is true that it shouldn't be able to do source much current on the output but, it has an op amp in its design and should be self-regulating. It drops regulation even when I put a 23.5k resistor ...
by ROFLCat
Mon Sep 07, 2020 3:37 am
Forum: General Discussion
Topic: ADR421 Vref IC Low Short-Circuit Current!
Replies: 10
Views: 430

Re: ADR421 Vref IC Low Short-Circuit Current!

You are absolutely correct! I had not noticed the "typical" figure part. But then again, it says "The ADR42X family of references are guaranteed to deliver load currents to 10mA with an input voltage that ranges from 4.5V to 18V." I can't even have the output stable with a 1k Ohm load; it quickly dr...
by ROFLCat
Mon Sep 07, 2020 12:48 am
Forum: General Discussion
Topic: ADR421 Vref IC Low Short-Circuit Current!
Replies: 10
Views: 430

ADR421 Vref IC Low Short-Circuit Current!

Hey guys! So I got this ADR421BRZ votlage reference IC for one of my projects and I seem to have a problem with it. The accuracy is just fine and I get 2.499V and when divided by a precision voltage divider, it comes out 1.2493V when divided by 2 on my 4 1/2 digit multimeter but, the short-circuit c...