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LM4040D20IDBZR

duddface
Prodigy 40 points

HI,

I am using the LM4040D20IDBZR in a circuit to generate a stable 2.048V reference voltage for my micro controller ADC. The circuit is attached. This is a 2.048V reference and I should measure 2.048V on the VRail node. But I measure 3.3V on that node. I am confused am starting to wonder if my design equations to choose the Rs is correct. Can someone help me figuring this circuit out?