DAC8554: Is it okay to tie Pins "nENABLE" and "nSYNC" together?

Sandro Ragusa

Part Number: DAC8554

Tool/software:

Hi there

Is it okay to tie the mentioned pins together?

Thus the DAC only listens to incoming data when nSYNC is tied low (like a Chip-Enable) and ignores traffic when nSYNC is HIGH.

Do you see any problems with this approach?

Thanks!

over 1 year ago

+1 Katlynne Jones over 1 year ago

TI__Mastermind 42273 points

Hi Sandro,

It would be best to tie enable to ground. Users have seen issues with tying these pins together. It's likely that when the enable pin is disabling the SPI port, the SYNC timing requirements are not able to be met and the DAC does not respond to commands.

Example: https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/919055/dac8554-only-receives-the-first-data-set?tisearch=e2e-sitesearch&keymatch=dac8554%25252520enable#

Best,

Katlynne Jones.

0 Sandro Ragusa over 1 year ago in reply to Katlynne Jones

Prodigy 50 points

Hi Katlynne

Okay I see, thank you very much for your quick reply!

Have a good one!

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DAC8554: Is it okay to tie Pins "nENABLE" and "nSYNC" together?