Vref is ref3012, i need 1.25V output.
when Vin is floating or 0V, ref3012 outputs 1.25V.
when Vin is 3.3V, 5V or 15V,ref3012 output 1.32V.
i want to know whether i use ref3012 right. if ref3012 can't use in the circuit, can you give any advice for Vref.
Thanks very much!