DAC80508: Trouble shoot for getting the output

Shinya Sawamoto

Expert 5285 points

Part Number: DAC80508

Hello team,

We need your help to solve a trouble for getting the output on the device.

We're in trouble as listed below.

- When wriiing 0x7FFF to DAC0-DAC7 on register, the output level remains at 0V.

- There is no change in the output level even if D4(LDAC) of the register trigger is set to ’1’.

- Register sync/config/gain remains defaulted.

Any finding of you is highly appreciated. If you need any additional information, feel free to let me know.

Thanks in advance.
S.Sawamoto

over 1 year ago

+1 Erin Bowrie over 1 year ago

TI__Genius 11150 points

Hi Sawamoto-san,

Firstly, I'd like to ask if you have the CLEAR version of the device. If you do, the device will not output any DAC data if the CLEAR pin is low. This is a good first check.

Second, can you turn on and off the internal reference voltage and measure if this works? This will let us know if the device is understanding the communication.

Thanks,
Erin

0 Shinya Sawamoto over 1 year ago in reply to Erin Bowrie

TI__Expert 5285 points

Hi Erin,

Thanks a lot for the prompt feedback. The issue has been solved.

Thanks,
S.Sawamoto

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DAC80508: Trouble shoot for getting the output