• AD5757 & AD5755

    Hi,

    1- I do not want to use Dynamic Power Control in AD5757 and AD5755. Can I connect my 12 volt to Vboost or only min voltage is 15 volt.

    2- In AD5755 can I do not connect AVss to -volt And the Vout_x is only 0-5 or 0-10 volt.

    Regards,

     

  • AD5757 SPI waveform is strange

    Hi,

    In my designing, we use FPGA to drive AD5757 chip with SPI port.

    FPGA -> ADUM1401 -> AD5757, an sample connection, SPI line have no any pull up or down resistor.

    FPGA can communication correctly with AD5757, but when test the SPI waveform on…

  • AD5757 DAC hardware and software reset

    Hi

    Could you helps to check whether hardware reset and software has the same result for AD5757 chip.

    What is the different of them.

    In my testing, bot hardware and software reset can work well.

    Also, in datasheet, it say that " when power up, make a…

  • AD5757使用的几个问题

    hi,ADI的各位专家

    我目前正在使用AD5757这个芯片,在硬件电路上有几个疑问想咨询一下大家,我把我的这块的原理图上传上来

    我是4个DA通道全部使用为电流模式0-20ma。这个芯片现在停产了吗?是否可以继续使用?

    问题1.0 AD5757PIN 24,34,46,56的Vboostx可以不使用内置升压(添加外部电感,二极管之类的奇迹)?直接用外部供电+24V供电,那么VboostA,B,C,D直接可以通过磁珠引过来24V吧,且AVDD=VBOOSTx=+24V?这个芯片功耗如何计算(24V…

  • Ad5757 from eval board doesn't answer

    Hello,

     

    I have evaluation board with AD5757 for two days. I would like to check that communication is working properly, so I want to read data from register without success. The second option is to turn on alarm led on the board by watchdog because…

  • 10% less than the programmed value AD5757 output current

    Use the AD5757 sample two.Circuit in accordance with the "UG-244.pdf" in the manufacture of circuit PCB. All register reads and writes are correct. Select the OUTEN bit to enabled,Output current measurement results only programmed current value of the…

  • AD5757 Digital Offset and Gain Control

    In the Data sheet:

    Can be seen from the formula, the gain can only be reduced if the to increase the gain should we do? Example: write 20mA full-scale output, the measured value is 19.94mA, then how to calibration the offset and gain registers, making…

  • ad5757电流输出问题

    使用AD5757芯片,设置满量程20MA输出时,测量输出1MA,设置10MA输出,测得输出1MA,请教什么地方出错?

  • 关于AD5757和AD5754的用法

    关于AD5757和AD5754的用法 by pontrin@gmail.com

    你好,

    我所给的附件中有我关于这2个芯片的用法,这个参考了一些图,但是我对我自己这样使用也不知道正确与否,所以希望能够得到你的答案,谢谢,如有不对之处,请指出来,感谢

  • AD5757在使用中的功耗大问题?

    在使用AD5757的过程中,当输出4-20mA电流时,当输出端开路时二次电流大,当输出端接负载时电流反而小了100mA左右,这是怎么回事?还有就是AD5757在我使用了三路模拟输出,在输出电流时,AD5757自身的功耗特别大?请指教