• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 46 subscribers
  • Views 443 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

dac3482

tony moseby
Prodigy 50 points

Other Parts Discussed in Thread: DAC3482

Hello,

 

I am trying to get a tone out of the dac3482, and have two questions.

Is the recommended (data sheet)  sequence    1-enable signal , 2-power on, very important?Can I reverse this sequence?

To get a tone out of the dac is enought to set the VCO to a certain freq and then disable the twos bit in reg 2?

Thanks

T

  • 0
    TI__Guru* 80975 points

    Hi Tony,

    It is important to have the DAC3482 configured and synchronized before the data transmission. Once you powered on the DAC3482, we strongly recommend that  you hold TXENABLE low before the configuration and synchronization to prevent random output transients that could potentially damage your signal chain devices such as power amplifier.

    To get a simple tone out of the DAC3482, you will need to have the DATACLK and DACCLK running. To enable constant input, set bit<0> of register 0x2D to "1". If your data format is offset binary (register 0x02, bit<1> = 0), then you can either program the constant data (register 0x30) to either all zeroes for negative full-scale or all ones for positive full-scale. (note this value will change if the data format is in two's complement).

    You should be able to see at tone at the NCO frequency afterwards.