• AD5666-EP: POR function

    Hello,

    I'm asked AD5666-EP POR function from our customer.

    The customer needs DAC which can output midscale after powered on.

    And he needs -55 to 125°C temperature range too.

    In the datasheet of AD5666 , power-on reset function is described in…

  • ADuC845 communicating with AD5666

    I am trying to use an external DAC connected to the ADuC845. While I could use the SPI on the microcontroller to write information and update the DAC, I am already using Timer2 as an external input counter. I have written my own transfer function to the…

  • AD5666 bad output voltage

    I use the AD5666 quad 16bit DAC in my application.

    During my calibration routine (to calculate gain and offset error from the circuit) I see curios output voltage.

    You see a extract from the calibration solution graph.

    X-axis is the set value in…

  • why ad5666的内部参考电压在Vref引脚上量不到?

    最近,我们项目上用AD5666作为AD9680的偏置调节,将AD5666设置为内部参开2.5V,为什么V测量VREF的电压始终为0?

    我的SPI的sclk为10M,SPI的指令如下: ,按照手册,先下发

      ,分别尝试standalone mode和DCENmode,再update

     ,这样操作有什么问题?用示波器能测到FPGA输出给AD5666的SCLK,SDO,LDAC,CLR等信号

     ,但是测量VREF引脚始终为0V,不是2.5V,请问我哪里配置有问题?谢谢,怎么设置才是正确的配置方法。

  • The AD5666 data sheet mentions a POR pin that will set the output to various voltage depending on the state of the pin. How does this work?

    By connecting the POR pin low, the AD5666 output powers up to 0 V; by connecting the POR pin high, the AD5666 output powers up to midscale.

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