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  1. AD8403
    Production
    Product
    Digital Potentiometers (DigiPOT)
    4-Channel Digital Potentiometer
    AD8403

    PDF

    Datasheet

    Documentation

    Ask the Community

    Sample & Buy

    Sample & Buy

  2. How do I tell the end-to-end RAB resistance value?
    Frequently Asked Question
    Take AD8400 as an example. The markings AD8400AR1, AD8400AR10, ADR8400AR50, AD8400AR100 (AD8400ARC) stand for 1kΩ, 10kΩ, 50kΩ, and 100kΩ parts respectively. Some parts may have different value designators from these. For example, our very compact packages such as SOT, SC-70, or MSOP are branded with 3-letter codes. Please consult the datasheet prior to ordering.
  3. AN-1291: Digital Potentiometers: Frequently Asked Questions
    Application Note
    This application note answers a series of frequently asked questions (FAQs) about digital potentiometer products from Analog Devices, Inc.
  4. AD5203: 4-Channel, 64-Position Digital Potentiometer Data Sheet
    Data Sheet

    PDF

    259 kB

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Results on EngineerZone

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    1. AD8403A10 wiper resistance

      Forum Thread
      Answered
      Precision DACs
      12 December, 2017
      Hi. In Ad8403A10 datasheet mentioned that wiper resistance is 50 typical and 100 max.While I'm checking 2 chips and in of them each DAC has 39 wiper resistance and other one has around 44 wiper resistance. I did this test in 0 step. The wiper resistance is so …

    2. AD8403A10 communication Check !

      Forum Thread
      Answered
      Precision DACs
      23 May, 2017
      Hey there. Is there any way to check the SPI communication reliability of AD8403 like CRC or something like that? Thanks!
      D/A Converters (DAC)ad8403Digital Potentiometers (DigiPOT)

    3. RE: AD8403A10 communication Check !

      Forum Reply
      Precision DACs
      02 August, 2018
      This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.Thank you,EZ Admin

    4. RE: AD8403A10 wiper resistance

      Forum Reply
      Precision DACs
      02 January, 2018
      Hi Koushik Happy new year ! Thanks a lot ! That helps me to choose the right Pot. As you said DNL is the main factor for my issue.

    5. RE: AD8403A10 wiper resistance

      Forum Reply
      Precision DACs
      02 January, 2018
      Hi Koka, Happy New Year! 1. Wiper Resistance: In the Data sheet it is mentioned that the typical value is 50 Ohm. it is not the minimum value.Typical represents average readings at 25°C and VDD = 5 V. Based you your operation condition and manufacturing variations the resistance will be …

    6. RE: AD8403A10 wiper resistance

      Forum Reply
      Precision DACs
      26 December, 2017
      Thanks for replay. Firstly, I did measure wiper resistance in 0 step and wiper resistance for different steps is not the subject. We have 2 subject first about wiper resistance that datasheet saying it should be around 50 to 100 Ohm but it is less than 50 (checked for 4 …

    7. RE: AD8403A10 wiper resistance

      Forum Reply
      Precision DACs
      20 December, 2017
      Hi koka, Apologies for the late reply. Firstly, I would like to know how did you find out the wiper resistance for different steps. The specification that you should be looking is DNL. The typical DNL value of the AD8403 is 1/4LSB which approximately 10 Ohms. The design will …

    8. RE: AD8403A10 wiper resistance

      Forum Reply
      Precision DACs
      20 December, 2017
      Hi, Someone is looking into your query and will respond to you when we have an answer. Thanks! Cheers, Ivan

    9. RE: AD8403A10 communication Check !

      Forum Reply
      Precision DACs
      13 June, 2017
      Hi. I just replaced the device and everything is OK now. -.- That was really confusing that VR blocks was working but setting 4 VRs causes the error. Thank you for your supports Best wishes Koka

    10. RE: AD8403A10 communication Check !

      Forum Reply
      Precision DACs
      07 June, 2017
      Hi Koka, The connections seems to be ok based on your description. I want to confirm if you are following the correct timing of the digital lines. Is the data from your controller valid at the rising edge of the clock? Do the digital lines violate the timing specifications on …