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Original question:

DAC60501: I2C Address byte: 9bit or 8bit?

DAC60501: May DAC60501 can support I2C in and output 25KHz square waveform output?

Chen Bogey8
Mastermind 9990 points
Part Number: DAC60501
Other Parts Discussed in Thread: DAC5571

Hi Sir 

May DAC60501 can support  I2C in and output 25KHz square waveform output?

                                                                                              Bogey

  • 0
    TI__Mastermind 46290 points

    Chen,

    DAC60501 supports fast plus mode I2C which goes up to 1MHz SCL. The interface requires a 4-byte transfer for each update which, including ACK bits, would be a 36 bit transaction. 36 bits at 1MHz provides a maximum update rate of 27.77kHz - so the maximum square wave frequency in I2C mode would be  ~13.9kHz.

    Is 12-bits of resolution required for this application or might 10-bits or 8-bits also be acceptable?

  • 0 in reply to Kevin Duke
    Intellectual 500 points

    Hi Kevin,

    Thanks for your answer.

    The 8-bits also be acceptable. Which DAC with I2C interface can support 25 KHz square waveform output?

    Regards,

    Roger

  • 0 in reply to Tseng Roger
    TI__Mastermind 46290 points

    Roger,

    We would need to take this part of the discussion offline as this is currently guarded by an NDA. Would it be okay to reach out to you at the email address that you used to register your myTI.com account with?

  • 0 in reply to Kevin Duke
    Mastermind 9990 points

    Hi Kevin 

    May we check again if there have other device can support without NDA request?

                                                                              Bogey

  • 0 in reply to Chen Bogey8
    TI__Mastermind 46290 points

    Bogey,

    Having scrubbed the portfolio a bit deeper DAC5571 may be able to work for you as it both offers the 3.4MHz high-speed I2C functionality and all updates after the first write can be executed using a 18 clock-cycle update routine. Between having more than 3x I2C clock speed and halving the number of clocks required for an update you can realize up to an 94.44kHz square wave.