Problems Programming Multiple Channels of the DAC7617

Yadriel Gonzalez62652

Other Parts Discussed in Thread: DAC7617

Hi All,

I'm having problems using the DAC7617 which is a 4-channel DAC. I program the first channel of the DAC to a selected value and it works, but after setting one channel if I program a second channel the previous one looses the programed value. Serial communication seems ok because I can set individual channels to any value without any problem but having multiple channels working at the same time is giving me problems.

I would really appreciatte any feeback.

Best Regards,

--Yadriel

over 14 years ago

Manuel Jimenez over 14 years ago

Prodigy 30 points

Problem solved! Shorted RESET and LDAC lines in PCB.

Tom Hendrick over 14 years ago in reply to Manuel Jimenez

TI__Guru**** 180831 points

Hi Manuel,

Are you and Yadriel work togoether on this? Did you short /RESET and /LDAC or /LOADREG and /LDAC together? Pulsing /RESET should take the outputs of all DACs to zero or midscale depending on the state of RESETSEL.

lf.lopez over 12 years ago in reply to Manuel Jimenez

Prodigy 10 points

What did you do? I don't understand, can you explain me how it worked. Thanks

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Problems Programming Multiple Channels of the DAC7617