Part Number: DAC7612
We are facing an issue: how to quickly tell whether DAC7612U or DAC7612UB is mounted on our products. Our end customers have questioned how we can confirm that DAC7612UB, rather than DAC7612U, is used on the units. According to the datasheet, the two components carry identical part marking, making them indistinguishable by visual inspection alone。dac7612.pdf 
