DAC5675A-SP: Using external voltage reference with DAC5675A

Uriel Berchin

Part Number: DAC5675A-SP

I would like to use an ultra stable (ovenized) 1.2V reference using the EXTIO pin. I am not so clear as how to use it and bypass the inaccuracy and noise influence of the internal reference.

over 2 years ago

0 Miguel Lomeli over 2 years ago

TI__Intellectual 1950 points

Hi Uriel,

please see attached.

0 Uriel Berchin over 2 years ago

Prodigy 120 points

Thank you for that. But I had read the datasheets. This does not resolve my issue with using an external voltage reference

0 Miguel Lomeli over 2 years ago in reply to Uriel Berchin

TI__Intellectual 1950 points

Hi Uriel,

are you asking for a recommendation for a reference voltage? Once you apply your external voltage to the EXTIO pin, it will bypass the internal reference voltage and use the external voltage that is being applied.

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DAC5675A-SP: Using external voltage reference with DAC5675A