STM32F3xx opamp input bias?

szbrozek9 · ‎2012-10-12

Posted on October 13, 2012 at 06:49

Input bias current is not listed, so I don't know how to size a resistor divider for use with the STM32F3xx series. Has anybody measured it? Is it hiding in a datasheet I haven't found?

Thanks!

-Sasha

#opamp

frankmeyer9 · ‎2012-10-13

Posted on October 13, 2012 at 12:22

I have not yet checked this specific item, but it should be in the datasheet.

However, because the STM32F3 is rather new, it is probably unqualified yet. There are hundreds of ''TBD'' items in the datasheet. A rather peculiar strategy of ST to release such sparsely qualified items, IMHO.

Edit:

The other opamp parameters are given, but no bias current (F302xx/F303xx datasheet, p.109). So it's probably not defined.

Nickname12657_O · ‎2013-01-08

Posted on January 08, 2013 at 11:01

Hi,

The max value of OPAMP input bias current is available in the last Datasheet. You can check it.

Cheers,

STOne-32