• What ohm EVAL-AD5270

    Hi

    My customer is considering EVAL-AD5270.
    If my customer orders EVAL-AD5270, what type of AD5720 is implemented?
    ORDERING GUIDE lists resistance values of 20k ohms, 50k ohms and 100k ohms.

    Best regards
  • RE: 我想設計控制方波的斜率電路

    推荐使用AD5270, 1024抽头, 20Kohm 100Kohm可选

    www.analog.com/zh/ad5270

  • RE: AD5270 as NTC controlled by Arduino

    Hi Wolle,

    Can you tell me about the application you are designing?

    The AD5270 uses SPI communication, while the AD5272 uses I2C communication:

    AD5270

    Arduino          AD5270

    PB5: SCLK   Connects to SCLK on the AD5270 (Pin 9)

    PB4: MISO   Connects to SDO (Pin…

  • AD5270电阻为负值?

    最近用AD5270加运放做ADC的可调放大,分别用了4片AD5270,全部挂在同一SPI总线上,但是输出的电阻值不准确,AD5270的A和W之间存在着电压值,运放的供电为5V,AD5270为3.3V,SPI的IO口电压为3.3V,为什么用万用表测量AD5270的A和W之间的电阻值是负值?现在如果取掉其中一片AD5270,则所有的都会工作正常,为什么会这样?请大神帮我解答一下

  • RE: About INTERFACE TIMING SPECIFICATION of AD5270/AD5271

    Hi Takahiro,

    AD5270/1 has two modes of operation:

    1. R-Performance mode: where the resistor tolerance can be upto 1% based on table 2 and 3 in the Datasheet.

    2. Normal Mode: where the typical resistor tolerance is 15%.

    By default the R-performance is…

  • AD5270 Programming in production

    Customer has designed in the AD5270. For production, they would like to have a way to program the devices using a PC (i.e. via USB). They have the Evaluation board for the AD5270/AD5272 devices and were wondering if it can be re-purposed to achive the goal…

  • RE: AD5270 Command Operating

    Hi Rainier,

    Thank you for your reply. i using 3series  AD5270 for test circuit.

    I modified it the way you suggested. AD5270 still doesn't change resistor value .  Please refer followings; 

     

                                                          < Figure 1. t5,t6 timing>

     

                                                          < Figure 2. 0x1C03…

  • AD5270 no response

    Hello,  so we have an application where we use two AD5270 and i can get one to talk to me but i can't get the other one to change it's wiper position from mid-scale or anything. i've tried on multiple boards and still one works and one doesn't respond…

  • RE: Voltage divider temperature coefficient of AD5270

    Thanks,  so AD5270 is not function equivalent to AD5239. I missed it.

  • What type of non-volatile memory hast the AD5270? What is its retention time?

    What type of non-volatile memory hast the AD5270? What is its retention time
    (time during which the NVM data retains its integrity over time without
    rewriting another/same value)?

     

    The AD5270 uses 50-times programmable memory.  A charge…