I have something wrong with TLV431A；
I use it as the reference voltage IC to a DDR IC, and have a filter capacitor of 0,1uF/16V 0402 between GND and pin 1(REF), our package is SOT-23-3
In that case ,there is a big ripple voltage about 370mv ，
and then I delete that capcaitor ,the ripple voltage disappered .
I'm wondering why,Please help me ,thanks.
I wish you could give me some literature,thank you very much.