• Questions about AD5254 digiPOT


    I want use AD5254 digital potentiometer(http://www.analog.com/en/digital-to-analog-converters/digital-potentiometers/ad5254/products/product.html) in my project design, but I don't know how to program it.

    I have never programmed I2C before…

  • AD5254 power-on problem


    I'm facing a problem with digipot AD5254 on my board where I use them as a part of programmable amplifiers in op amp feedback path. Usually during power-on sequence (after turning power supply on) digipot wrongly writes values 0 or 255 in some…

  • AD5254 I2C port drive strength

    Hi all,

    I'd like to determine a suitable series resistor value put on I2C lines of AD5254.

    Therefore, could you tell me typical drive strength (output current) of I2C interface of AD5254 and its IBIS model?

    Best Regards,


  • About BIT BANG for AD5254

    Hi, guys,

    I need your help with I2C bit bang for AD5254 as my MCU doesn't support I2C.

    I was trying to talk to AD5254 with its quick command write mode, but the digipot was not responding. I also tried to measure the resistance of RDACs, but it…

  • AD5254 50K vs 1K



    I ordered two 50K versions of this chip and two 1K versions as well. According to the datasheet (http://www.analog.com/static/imported-files/data_sheets/AD5253_5254.pdf), they have identical pin-outs. The 50K responded to the power and grounding…

  • AD5254 - I2C Interface Questions

         Good morning.  I have a customer that is going to interface with the AD5254 via a Xilinx Spartan-6 FPGA and he has a couple of questions.

         1)  In Figure 29 of the data sheet, it indicates that the slave is generating the stop condition when all of the…

  • AD5254 - Unwritable eeprom and rdac

    Preemptive apology for being so basic.

    I'm using i2c to talk to an AD5254 from a RaspberryPi - spent last night rebuilding the kernel to enable device tree mode and add the digipot driver, and to my joy this morning I can see all of the eeproms and rdacs…

  • AD5254 - different VDD and I2C bus voltage

    Is it possible to have VDD for the AD5254 set to +5V but run the I2C bus to the
    AD5254 at 3.3V ?


    In the specifications section we specify that for VDD = 5V, the minimum logic
    high voltage required is 2.4V:
    In other words, 3.3V logic…
  • About AD5254 Input and output Digital Voltage


    My customers are considering using the AD5254.
    So I got a question.

    What voltages can I apply to the SCL pin and how many A can be applied?
    "Digital Inputs and Output Voltage to GND" is stated as "0 V, 7 V", is this the same idea as the one confirmed…

  • Do the AD5254 adjustable resistors have galvanic isolation?

    Are the adjustable resistor connections (e.g. A0, B0, W0) galvanically isolated
    (separated) from the digital system ground (DGND/VSS) without any hard internal
    connections on the chip?


    These terminals, A0, B0, W0 are not isolated. All…