DAC3482: Alarm_dacclk_gone issue

Jong-min Kim

Prodigy 70 points

Part Number: DAC3482

Hello!
I have a question regarding dac3482.
Alarm_dacclk_gone is raised after the power sequence.

The dac clk is 1.2288GHz, and the peak voltage is as clean as -20dBm when viewed from the spectrum.

Thank you for your reply.

over 2 years ago

0 Kang Hsia over 2 years ago

TI__Guru 66104 points

Hi Jong-min,

Please clear the alarm by writing zeros to config 5 to see if the alarm can be cleared. The DACCLK may be interrupted briefly during power up or the clocking chip to the DAC3482 may have glitches and causes such error. See app note below for detail.

https://www.ti.com/lit/pdf/slaa585

0 Jong-min Kim over 2 years ago in reply to Kang Hsia

Prodigy 70 points

Hello!
Sorry for the late reply.

The problem has been resolved.
There seems to be a problem with the DAC control.

thank you!

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DAC3482: Alarm_dacclk_gone issue