In the table 6 DC Operating Conditions of IMX25CEC(REV10), it saied the Min. voltage value of REF is 2.5V. But in my customer's design, sometime the value will be down to 2.48V(or 2.47V). The REF also be supplied by NVCC_ADC(3.3V) as the SPF-26325_B1.PDF. I wonder the 2.48V is ok or not for REF? Look forward to your kindly advice.