ADS8556: ADS8556 power-down mode

Prodigy 90 points

Replies: 13

Views: 151

Part Number: ADS8556

hi,from the datasheet,bring the convst signal low during an ongoing conversion when busy signal is high can put ads8556 into power-down mode. Is there any other reason can put ads8556 into power-down mode beside this?

13 Replies

  • In reply to Dale Li:

    Hi Dale,

    Based on your description, if the ADC has entered latch-up it can also stop the conversion and stop outputting BUSY signal.I want to know what causes the ADC to  enter latch-up mode.

    Thanks&regards.

  • In reply to Dale Li:

    Hi Dale,

    Based on your description, if the ADC has entered latch-up it can also stop the conversion and stop outputting BUSY signal.I want to know what causes ADC to  enter latch-up mode.

    Thanks&regards.

  • In reply to user3783133:

    Hi user3783133,

    Latchup can be caused by a number of triggering factors including overvoltage spikes or transients, exceeding maximum ratings, and incorrect power sequencing. It can happen at any place where the required parasitic structure exists including on an input or output. Latch-ups can be caused by a trigger including current injection or overvoltage. However, I think the first step is to verify if this was caused by Partial Power-Down so ADS8555 was strongly suggested for you. 

    Regards,

    Dale