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LMV321-N: Question about LMV321-N

Part Number: LMV321-N
Other Parts Discussed in Thread: TLV9001

Hello:

LMV321M5X/NOPB is used on the customer's motor motherboard, the main purpose is to monitor the temperature through the output voltage of the chip.
During the test, there were several chips with abnormal temperature. It was found that the output of pins 3 and 4 of the chip was 2.8V, and there was a voltage difference of 0.2V, so it was judged that there was a problem with the chip.
At present, we have voted for 44pcs in total, and 7pcs are bad.

My customer submitted FA request for this chip and TI declined it. So I would like to ask TI to help analyze and check this application issue.Thanks!!!

  • The input common-mode range ends 1 V below the positive supply. So this circuit is not guaranteed to be able to handle voltages above 2.3 V.

    Either use a 5 V supply, or use an amplfier with rail-to-rail inputs like the TLV9001.