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DAC53202: Error Drift Data

KrnB
Intellectual 580 points
Part Number: DAC53202
Other Parts Discussed in Thread: DAC53701, DAC53002

Hello, 

 Please can you share Gain Drift & Zero-Code Error Drift for DAC53202. 

Also, please confirm what is the max output load driving capability of DAC53202.

  • +1
    TI__Mastermind 30728 points

    Hello, 

    The drift is shown in the datasheet as a unit/temperature:

    The limit would technically be the short circuit limit. With a zero load, the device will operate at the short circuit limit:

    I do not have a plot for this device, but here is one from the DAC53701 which has a very similar output stage. You can see that as the load current increases the device loses the ability to regulate the output voltage. You should consider what an acceptable voltage drop is for your design, and make sure not to exceed that load current. 

    Best,

    Katlynne Jones

  • 0 in reply to Katlynne Jones
    Intellectual 580 points

    Hello, 

    Thank you for your reply.

    Please can you also help in confirming the key difference between DAC53202 & DAC53002. I could see the only difference that DAC53002 has lower power consumption.

    Also, the IDD mentioned in section 6.5 of datasheet of both DAC53202 & DAC53002  is for external reference. What is the corresponding current when Internal Reference is enable in Voltage output mode ?

  • 0 in reply to KrnB
    TI__Mastermind 30728 points

    Hello,

    The lower power mode is the only difference. The Ivdd with the internal reference enabled is shown for each device in the general section of the electrical characteristics.

    Best,

    Katlynne Jones 

  • 0 in reply to Katlynne Jones
    Intellectual 580 points

    Hello, 

    Thank you for your reply!.

    Considering DAC53202 datasheet,

    • the general section 6.8 in datasheet shows the typical current when internal reference enable as 12.5uA while,
    • the voltage output section 6.5 shows the typical current when external reference at VDD as 150uA

    I was hoping that the current for internal reference enable state would be highest. Please can you confirm if this expectation is valid.

    I am looking for Current consumption in Normal Operation mode with internal reference enabled. Please can you help to share that.

    Regards

  • +1 in reply to KrnB
    TI__Mastermind 30728 points

    Hello,

    Your understanding is correct, but the datasheet description could be a little misleading. The contribution from the internal reference when it is enabled is 12.5uA, so the IVDD when the internal reference is enabled is 12.5uA + 150uA per channel. When the external reference is enabled the IVDD is just 150uA per channel.

    Best,

    Katlynne Jones