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TAD5242: Is this correct chip?

Part Number: TAD5242
Other Parts Discussed in Thread: TAD5212, TAC5212, TAC5111, TAC5242, TAA5242, TAA5212, TAC5211, TAD5112, TAC5142, TAC5112, TAD5142

I bought TAD5242 audio DACs, but I received chips marked "5212."

I received this information fromTI Support:

"After a thorough investigation, the devices sent are correct and configured for XTAD5242IRGER as on the label of the package. The top marking on the device will reflect the parent family which is X5212 as this is pre-production device. Once in production, the device top markings will be updated."

The installed chip does not work. Output signal i 0V, as if the chip was inactive.

First question before technial one:

So what is the TAD5212 chip marked: "5242" ???

Best regards