Hello,

I just designed my first custom PCB which uses a TI REF2025 chip. Upon trying to order the board it seems that the REF2025 is out of stock everywhere and won't return for months. Do you know of an alternative chip that I can use? I needs to be able to be powered by either a 3v (coincell) or 5v (usb power) and output both 1.25v and 2.50v for an op-amp I'm using.

Thank you

 

A TLV431 can be configured to generate 1.24V from its Ref terminal and 2.5V from the cathode with two bias resistors, one from cathode to Ref and.one from Ref to ground.

 

it seems that the REF2025 is out of stock everywhere

did you try Digikey.com?

 

A TLV431 can be configured to generate 1.24V from its Ref terminal and 2.5V from the cathode with two bias resistors, one from cathode to Ref and.one from Ref to ground.

Okay thank you for this alternate method. If I need to I will look into doing that, but I was able to find the REF2025 on https://www.sierraic.com/.

@ronsimpson yes I checked Digikey. Thanks for the suggestion though.